title: Melbourne Cricket Ground

text: In subsequent years conditions at the MCG improved but the ever-ambitious Melburnians were always on the lookout for more than the usual diet of club and inter-colonial games. In 1861, Felix William Spiers and Christopher Pond, the proprietors of the Cafe de Paris in Bourke Street and caterers to the MCC, sent their agent, W.B. Mallam, to England to arrange for a cricket team to visit Australia.


title: Melbourne Cricket Ground

text: Mallam found a team and, captained by Heathfield Stephenson, it arrived in Australia on Christmas Eve 1861 to be met by a crowd of more than 3000 people. The team was taken on a parade through the streets wearing white-trimmed hats with blue ribbons given to them for the occasion. Wherever they went they were mobbed and cheered by crowds to the point where the tour sponsors had to take them out of Melbourne so that they could train undisturbed.


title: Melbourne Cricket Ground

text: Their first game was at the MCG on New Year's Day 1862, against a Victorian XVIII. The Englishmen also wore coloured sashes around their waists to identify each player and were presented with hats to shade them from the sun. Some estimates put the crowd at the MCG that day at 25,000. It must have been quite a picture with a new 6000 seat grandstand, coloured marquees ringing the ground and a carnival outside. Stephenson said that the ground was better than any in England. The Victorians however, were no match for the English at cricket and the visitors won by an innings and 96 runs.


title: Melbourne Cricket Ground

text: Over the four days of the 'test' more than 45,000 people attended and the profits for Speirs and Pond from this game alone was enough to fund the whole tour. At that time it was the largest number of people to ever watch a cricket match anywhere in the world. Local cricket authorities went out of their way to cater for the needs of the team and the sponsors. They provided grounds and sponsors booths without charge and let the sponsors keep the gate takings. The sponsors however, were not so generous in return. They quibbled with the Melbourne Cricket Club about paying £175 for damages to the MCG despite a prior arrangement to do so.


title: Melbourne Cricket Ground

text: The last match of the tour was against a Victorian XXII at the MCG after which the English team planted an elm tree outside the ground.


title: Melbourne Cricket Ground

text: Following the success of this tour, a number of other English teams also visited in subsequent years. George Parr's side came out in 1863–64 and there were two tours by sides led by William Gilbert Grace. The fourth tour was led by James Lillywhite.


title: Melbourne Cricket Ground

text: On Boxing Day 1866 an Indigenous Australian cricket team played at the MCG with 11,000 spectators against an MCC team. A few players in that match were in a later team that toured England in 1868. Some also played in three other matches at the ground before 1869.


title: Melbourne Cricket Ground

text: Up until the fourth tour in 1877, led by James Lillywhite, touring teams had played first-class games against the individual colonial sides, but Lillywhite felt that his side had done well enough against New South Wales to warrant a game against an All Australian team.


title: Melbourne Cricket Ground

text: When Lillywhite headed off to New Zealand he left Melbourne cricketer John Conway to arrange the match for their return. Conway ignored the cricket associations in each colony and selected his own Australian team, negotiating directly with the players. Not only was the team he selected of doubtful representation but it was also probably not the strongest available as some players had declined to take part for various reasons. Demon bowler Fred Spofforth refused to play because wicket-keeper Billy Murdoch was not selected. Paceman Frank Allan was at Warrnambool Agricultural Show and Australia's best all-rounder Edwin Evans could not get away from work. In the end only five Australian-born players were selected.


title: Melbourne Cricket Ground

text: The same could be said for Lillywhite's team which, being selected from only four counties, meant that some of England's best players did not take part. In addition, the team had a rough voyage back across the Tasman Sea and many members had been seasick. The game was due to be played on 15 March, the day after their arrival, but most had not yet fully recovered. On top of that, wicket-keeper Ted Pooley was still in a New Zealand prison after a brawl in a Christchurch pub.


title: Melbourne Cricket Ground

text: England was nonetheless favourite to win the game and the first ever Test match began with a crowd of only 1000 watching. The Australians elected Dave Gregory from New South Wales as Australia's first ever captain and on winning the toss he decided to bat.


title: Melbourne Cricket Ground

text: Charles Bannerman scored an unbeaten 165 before retiring hurt. Sydney Cricket Ground curator, Ned Gregory, playing in his one and only Test for Australia, scored Test cricket's first duck. Australia racked up 245 and 104 while England scored 196 and 108 giving Australia victory by 45 runs. The win hinged on Bannerman's century and a superb bowling performance by Tom Kendall who took 7 for 55 in England's second innings.


title: Melbourne Cricket Ground

text: A fortnight later there was a return game, although it was really more of a benefit for the English team. Australia included Spofforth, Murdoch and T.J.D. Cooper in the side but this time the honours went to England who won by four wickets.


title: Melbourne Cricket Ground

text: Two years later Lord Harris brought another England team out and during England's first innings in the Test at the MCG, Fred Spofforth took the first hat-trick in Test cricket. He bagged two hauls of 6 for 48 and 7 for 62 in Australia's ten wicket win.


title: Melbourne Cricket Ground

text: Through most of the 20th century, the Melbourne Cricket Ground was one of the two major Test venues in Australia (along with the Sydney Cricket Ground), and it would host one or two Tests in each summer in which Tests were played; since 1982, the Melbourne Cricket Ground has hosted one Test match each summer. Until 1979, the ground almost always hosted its match or one of its matches over the New Year, with the first day's play falling somewhere between 29 December and 1 January; in most years since 1980 and every year since 1995, its test has begun on Boxing Day, and it is now a standard fixture in the Australian cricket calendar and is known as the Boxing Day Test. The venue also hosts one-day international matches each year, and Twenty20 international matches most years. No other venue in Melbourne has hosted a Test, and Docklands Stadium is the only other venue to have hosted a limited-overs international.


title: Melbourne Cricket Ground

text: The Victorian first-class team plays Sheffield Shield cricket at the venue during the season. Prior to Test cricket being played on Boxing Day, it was a long-standing tradition for Victoria to host New South Wales in a first-class match on Boxing Day. Victoria also played its limited overs matches at the ground. Since the introduction of the domestic Twenty20 Big Bash League (BBL) in 2011, the Melbourne Stars club has played its home matches at the ground. It is also the home ground of the Melbourne Stars Women team, which plays in the Women's Big Bash League (WBBL).


title: Melbourne Cricket Ground

text: By the 1980s, the integral MCG pitch – grown from Merri Creek black soil – was considered the worst in Australia, in some matches exhibiting wildly inconsistent bounce which could see balls pass through as grubbers or rear dangerously high – a phenomenon which was put down to damage caused by footballers in winter and increased use for cricket during the summers of the 1970s. The integral pitch has since been removed and drop-in pitches have been cultivated and used since 1996, generally offering consistent bounce and a fair balance between bat and ball. The decade-and-a-half-old pitches degraded again through the late 2010s, seeing the pitch receive the first official International Cricket Council 'poor' rating by an Australian pitch in 2017, and saw another Sheffield Shield match abandoned in 2019; a new set of drop-in pitches will be grown and ready for use by the early 2020s.


title: Melbourne Cricket Ground

text: The highest first class team score in history was posted at the MCG in the Boxing Day match against New South Wales in 1926–27. Victoria scored 1107 in two days, with Bill Ponsford scoring 352 and Jack Ryder scoring 295.


title: Melbourne Cricket Ground

text: One of the most sensational incidents in Test cricket occurred at the MCG during the Melbourne test of the 1954–55 England tour of Australia. Big cracks had appeared in the pitch during a very hot Saturday's play and on the rest day Sunday, groundsman Jack House watered the pitch to close them up. This was illegal and the story was leaked by "The Age" newspaper. The teams agreed to finish the match and England won by 128 runs after Frank Tyson took 7 for 27 in the final innings.


title: Melbourne Cricket Ground

text: An incident in the second Test of the 1960–61 series involved the West Indies player Joe Solomon being given out after his hat fell on the stumps after being bowled at by Richie Benaud. The crowd sided with the West Indies over the Australians.


title: Melbourne Cricket Ground

text: Not only was the first Test match played at the MCG, the first One Day International match was also played there, on 5 January 1971, between Australia and England. The match was played on what was originally scheduled to have been the fifth day of a Test match, but the Test was abandoned after the first three days were washed out. Australia won the 40-over match by 5 wickets. The next ODI was played in August 1972, some 19 months later.


title: Melbourne Cricket Ground

text: In March 1977, a Centenary Test Match was held between Australia and England to mark the 100th anniversary of the first Test match. The match was the idea of former Australian bowler and MCC committee member Hans Ebeling who had been responsible for developing the cricket museum at the MCG. England's Derek Randall scored 174, Australia's Rod Marsh also got a century, Dennis Lillee took 11 wickets, and David Hookes, in his first Test, hit five fours in a row off England captain Tony Greig's bowling. Rick McCosker opened the batting for Australia and suffered a fractured jaw after being hit by a sharply rising delivery. He left the field but came back in the second innings with his head swathed in bandages. Australia won the match by 45 runs, exactly the same margin as the first Test in 1877.


title: Melbourne Cricket Ground

text: Another incident occurred on 1 February 1981 at the end of a one-day match between Australia and New Zealand. New Zealand, batting second, needed six runs off the last ball of the day to tie the game. Australian captain, Greg Chappell instructed his brother Trevor, who was bowling the last over, to send the last ball down underarm to prevent the New Zealand batsman, Brian McKechnie, from hitting the ball for six. Although not in the spirit of the game, an underarm delivery was quite legal, so long as the arm was kept straight. The Laws of cricket have since been changed to prevent such a thing happening again. The incident has long been a sore point between Australia and New Zealand.


title: Melbourne Cricket Ground

text: In February and March 1985 the Benson & Hedges World Championship of Cricket was played at the MCG, a One Day International tournament involving all of the then Test match playing countries to celebrate 150 years of the Australian state of Victoria. Some matches were also played at Sydney Cricket Ground.


title: Melbourne Cricket Ground

text: The MCG hosted the 1992 Cricket World Cup Final between Pakistan and England with a crowd of more than 87,000. Pakistan won the match after an all-round performance by Wasim Akram who scored 33 runs and took 3 wickets to make Pakistan cricket world champions for the first and, to date, only time.


title: Melbourne Cricket Ground

text: During the 1995 Boxing Day Test at the MCG, Australian umpire Darrell Hair called Sri Lankan spin bowler Muttiah Muralitharan for throwing the ball, rather than bowling it, seven times during the match. The other umpire did not call him once and this caused a controversy, although Muralitharan was later called for throwing by other umpires in different matches.


title: Melbourne Cricket Ground

text: The MCG is known for its great atmosphere, much of which is generated in the infamous Bay 13, situated almost directly opposite to the members stand. In the late 1980s, the crowd at Bay 13 would often mimic the warm up stretches performed by Merv Hughes. In a 1999 One-Day International, the behaviour of Bay 13 was so bad that Shane Warne, donning a helmet for protection, asked the crowd to settle down at the request of opposing England captain Alec Stewart.


title: Melbourne Cricket Ground

text: The MCG hosted three pool games as part of the 2015 ICC Cricket World Cup as well as a quarter-final, and then the final on 29 March. Australia comfortably defeated New Zealand by seven wickets in front of an Australian record cricket crowd of 93,013.


title: Melbourne Cricket Ground

text: The 2020 ICC Women's T20 World Cup Final was held on International Women's Day between Australia and India. Australia won by 85 runs in front of a record crowd for women's cricket of 86,174.


title: Melbourne Cricket Ground

text: Despite being called the Melbourne Cricket Ground, the stadium has been and continues to be used much more often for Australian rules football. Spectator numbers for football are larger than for any other sport in Australia, and it makes more money for the MCG than any of the other sports played there.


title: Melbourne Cricket Ground

text: Although the Melbourne Cricket Club members were instrumental in founding Australian Rules Football, there were understandable concerns in the early days about the damage that might be done to the playing surface if football was allowed to be played at the MCG. Therefore, football games were often played in the parklands next to the cricket ground, and this was the case for the first documented football match to be played at the ground. The match which today is considered to be the first Australian rules football, played between Melbourne Grammar and Scotch College over three Saturdays beginning 7 August 1858 was played in this area.


title: Melbourne Cricket Ground

text: It wasn't until 1869 that football was played on the MCG proper, a trial game involving a police team. It was not for another ten years, in 1879, after the formation of the Victorian Football Association, that the first official match was played on the MCG and the cricket ground itself became a regular venue for football. Two night matches were played on the ground during the year under the newly invented electric light.


title: Melbourne Cricket Ground

text: In the early years, the MCG was the home ground of Melbourne Football Club, Australia's oldest club, established in 1858 by the founder of the game itself, Thomas Wills. Melbourne won five premierships during the 1870s using the MCG as its home ground.


title: Melbourne Cricket Ground

text: The first of nearly 3000 Victorian Football League/Australian Football League games to be played at the MCG was on 15 May 1897, with beating 64 to 19.


title: Melbourne Cricket Ground

text: Melbourne used the venue as its training base until 1984, before being required to move to preserve the venue's surface when North Melbourne began playing there.


title: Melbourne Cricket Ground

text: The VFL/AFL grand final has been played at the MCG every season since 1902, except for between 1942 and 1945, when the ground was used by the military during World War II; in 1991 as the construction of the Great Southern Stand had temporarily reduced the ground's capacity below that of Waverley Park; and both 2020 and 2021, when restrictions in Victoria due to the COVID-19 pandemic prompted the games to be moved to the Gabba in Queensland and Perth Stadium in Western Australia respectively. All three grand final replays have been played at the MCG.


title: Melbourne Cricket Ground

text: Before the MCG was fully seated, a grand final could draw attendances above 110,000. The record for the highest attendance in the history of the sport was set in the 1970 VFL Grand Final, with 121,696 in attendance.


title: Melbourne Cricket Ground

text: Since being fully seated, grand final attendances are typically between 95,000 and 100,000, with the record of 100,024 at the 2022 AFL Grand Final, followed by 100,022 at the 2018 AFL Grand Final and 100,021 at the 2017 AFL Grand Final.


title: Melbourne Cricket Ground

text: In the modern era, most finals games held in Melbourne have been played at the MCG. Under the current contract, 10 finals (excluding the grand final) must be played at the MCG over a five-year period. Under previous contracts, the MCG was entitled to host at least one match in each week of the finals, which on several occasions required non-Victorian clubs to play "home" finals in Victoria. The MCG is contracted to host the grand final every year until 2059.


title: Melbourne Cricket Ground

text: All Melbourne-based teams (and most of the time Geelong) play their "home" finals at the MCG unless if four Victorian teams win the right to host a final in the first week of the finals.


title: Melbourne Cricket Ground

text: For many years the VFL had an uneasy relationship with the MCG trustees and the Melbourne Cricket Club. Both needed the other, but resented the dependence. The VFL made the first move which brought things to a head by beginning the development of VFL Park at Mulgrave in the 1960s as its own home ground and as a potential venue for future grand finals. Then in 1983, president of the VFL, Allen Aylett started to pressure the MCG Trust to give the VFL a greater share of the money it made from using the ground for football.


title: Melbourne Cricket Ground

text: After negotiations with the MCC in 1964, joined Melbourne playing their home games at the MCG from 1965.


title: Melbourne Cricket Ground

text: In March 1983 the MCG trustees met to consider a submission from Aylett. Aylett said he wanted the Melbourne Cricket Club's share of revenue cut from 15 per cent to 10 per cent. He threatened to take the following day's opening game of the season, Collingwood vs Melbourne, away from the MCG. The money was held aside until an agreement could be reached.


title: Melbourne Cricket Ground

text: Different deals, half deals and possible deals were done over the years, with the Premier of Victoria, John Cain, Jr., even becoming involved. Cain was said to have promised the VFL it could use the MCG for six months of the year and then hand it back to the MCC, but this never eventuated, as the MCG Trust did not approve it. In the mid-1980s, a deal was done where the VFL was given its own members area in the Southern Stand.


title: Melbourne Cricket Ground

text: Against this background of political maneuvering, in 1985 became the third club to make the MCG its home ground. In the same year, North played in the first night football match at the MCG for almost 110 years, against Collingwood on 29 March 1985.


title: Melbourne Cricket Ground

text: In 1986, only a month after Ross Oakley had taken over as VFL Commissioner, VFL executives met with the MCC and took a big step towards resolving their differences. Changes in the personnel at the MCC also helped. In 1983 John Lill was appointed secretary and Don Cordner its president.


title: Melbourne Cricket Ground

text: Shortly after the Southern Stand opened in 1992, the Australian Football League moved its headquarters into the complex. The AFL assisted with financing the new stand and came to an agreement that ensures at least 45 AFL games are played at the MCG each year, including the Grand Final in September. Another 45 days of cricket are also played there each year and more than 3.5 million spectators come to watch every year. Also in 1992, became the fourth AFL club to call the MCG home with staging the majority of their home games at the MCG from 1994 onwards before fully moving from Victoria Park to the MCG in 2000. have also used the ground for up to five home games a year since 1992.


title: Melbourne Cricket Ground

text: As of the end of 2011, Matthew Richardson holds the records for having scored the most goals on the MCG and as of 2021 Scott Pendlebury holds the record for playing the most matches. Two players have scored 14 goals for an AFL or VFL game in one match at the MCG, Gary Ablett, Sr. in 1989 and 1993 and John Longmire in 1990.


title: Melbourne Cricket Ground

text: Before an AFL match between and on 27 August 1999, the city end scoreboard caught on fire due to an electrical fault, causing the start of play to be delayed by half an hour.


title: Melbourne Cricket Ground

text: During World War II, the government requisitioned the MCG for military use. From 1942 until 1945 it was occupied by (in order): the United States Army Air Forces, the Royal Australian Air Force, the United States Marine Corps and again the RAAF. Over the course of the war, more than 200,000 personnel were barracked at the MCG. From April to October 1942, the US Army's Fifth Air Force occupied the ground, naming it "Camp Murphy", in honor of officer Colonel William Murphy, a senior USAAF officer killed in Java. In 1943 the MCG was home to the legendary First Regiment of the First Division of the United States Marine Corps. The First Marine Division were the heroes of the Guadalcanal campaign and used the "cricket grounds", as the marines referred to it, to rest and recuperate. On 14 March 1943 the marines hosted a giant "get together" of American and Australian troops on the arena.


title: Melbourne Cricket Ground

text: In 1977, Melbourne Cricket Club president Sir Albert Chadwick and Medal of Honor recipient, Colonel Mitchell Paige, unveiled a commemorative plaque recognizing the Americans' time at the ground.


title: Melbourne Cricket Ground

text: In episode 3 of the 2010 TV miniseries, "The Pacific", members of the US Marines are shown to be camped in the war-era MCG.


title: Melbourne Cricket Ground

text: The MCG's most famous moment in history was as the main stadium for the 1956 Olympic Games, hosting the opening and closing ceremonies, track and field events, and the finals in field hockey and soccer. The MCG was only one of seven possible venues, including the Melbourne Showgrounds, for the Games' main arena. The MCG was the Federal Government's preferred venue but there was resistance from the MCC. The inability to decide on the central venue nearly caused the Games to be moved from Melbourne. Prime Minister Robert Menzies recognised the potential embarrassment to Australia if this happened and organised a three-day summit meeting to thrash things out. Attending was Victorian Premier John Cain, Sr., the Prime Minister, deputy opposition leader Arthur Calwell, all State political leaders, civic leaders, Olympic officials and trustees and officials of the MCC. Convening the meeting was no small effort considering the calibre of those attending and that many of the sports officials were only part-time amateurs.


title: Melbourne Cricket Ground

text: As 22 November, the date of the opening ceremony, drew closer, Melbourne was gripped ever more tightly by Olympic fever. At 3 pm the day before the opening ceremony, people began to line up outside the MCG gates. That night the city was paralysed by a quarter of a million people who had come to celebrate.


title: Melbourne Cricket Ground

text: The MCG's capacity was increased by the new Olympic (or Northern) Stand, and on the day itself 103,000 people filled the stadium to capacity. A young up and coming distance runner was chosen to carry the Olympic torch into the stadium for the opening ceremony.


title: Melbourne Cricket Ground

text: Although Ron Clarke had a number of junior world records for distances of 1500 m, one mile (1.6 km) and two miles (3 km), he was relatively unknown in 1956. Perhaps the opportunity to carry the torch inspired him because he went on to have a career of exceptional brilliance and was without doubt the most outstanding runner of his day. At one stage he held the world record for every distance from two miles (3 km) to 20 km. His few failures came in Olympic and Commonwealth Games competition. Although favourite for the gold at Tokyo in 1964 he was placed ninth in the 5,000 metres race and the marathon and third in the 10,000 metres. He lost again in the 1966 Commonwealth Games and in 1968 at altitude in Mexico he collapsed at the end of the 10 km race.


title: Melbourne Cricket Ground

text: On that famous day in Melbourne in 1956 the torch spluttered and sparked, showering Clarke with hot magnesium, burning holes in his shirt. When he dipped the torch into the cauldron it burst into flame singeing him further. In the centre of the ground, John Landy, the fastest miler in the world, took the Olympic oath and sculler Merv Wood carried the Australian flag.


title: Melbourne Cricket Ground

text: The Melbourne Games also saw the high point of Australian female sprinting with Betty Cuthbert winning three gold medals at the MCG. She won the 100 m and 200 m and anchored the winning 4 x 100 m team. Born in Merrylands in Sydney's west she was a champion schoolgirl athlete and had already broken the world record for the 200 m just before the 1956 Games. She was to be overshadowed by her Western Suburbs club member, the Marlene Matthews. When they got to the Games, Matthews was the overwhelming favourite especially for the 100 m a distance over which Cuthbert had beaten her just once.


title: Melbourne Cricket Ground

text: Both Matthews and Cuthbert won their heats with Matthews setting an Olympic record of 11.5 seconds in hers. Cuthbert broke that record in the following heat with a time of 11.4 seconds. The world record of 11.3 was held by another Australian, Shirley Strickland who was eliminated in her heat. In the final Matthews felt she got a bad start and was last at the 50 metre mark. Cuthbert sensed Isabella Daniels from the USA close behind her and pulled out a little extra to win Australia's first gold at the Games in a time of 11.5 seconds, Matthews was third. The result was repeated in the 200 m final. Cuthbert won her second gold breaking Marjorie Jackson's Olympic record. Matthews was third again.


title: Melbourne Cricket Ground

text: By the time the 1956 Olympics came around, Shirley Strickland was a mother of 31 years of age but managed to defend her 80 m title, which she had won in Helsinki four years before, winning gold and setting a new Olympic record.


title: Melbourne Cricket Ground

text: The sensational incident of the track events was the non-selection of Marlene Matthews in the 4 x 100 m relay. Matthews trained with the relay team up until the selection was made but Cuthbert, Strickland, Fleur Mellor and Norma Croker were picked for the team. There was outrage at the selection which increased when Matthews went on to run third in both the 100 m and 200 m finals. Personally she was devastated and felt that she had been overlooked for her poor baton change. Strickland was disappointed with the way Matthews was treated and maintained it was an opinion held in New South Wales that she had baton problems. One of the selectors, Doris Magee from NSW, said that selecting Matthews increased the risk of disqualification at the change. But Cuthbert maintained that the selectors made the right choice saying that Fleur Mellor was fresh, a specialist relay runner and was better around the curves than Matthews.


title: Melbourne Cricket Ground

text: The men did not fare so well. The 4 x 400 m relay team, including later IOC Committee member Kevan Gosper, won silver. Charles Porter also won silver in the high jump. Hec Hogan won bronze in the 100 m to become the first Australian man to win a medal in a sprint since the turn of the century and despite injury John Landy won bronze in the 1500 m. Allan Lawrence won bronze in the 10,000 m event.


title: Melbourne Cricket Ground

text: Apart from athletics, the stadium was also used for the soccer finals, the hockey finals, the Opening and Closing Ceremonies, and an exhibition game of baseball between the Australian National Team and a US armed services team at which an estimated crowd of 114,000 attended. This was the Guinness World Record for the largest attendance for any baseball game, which stood until a 29 March 2008 exhibition game between the Boston Red Sox and Los Angeles Dodgers at the Los Angeles Coliseum (also a former Olympic venue in 1932 and 1984) drawing 115,300.


title: Melbourne Cricket Ground

text: The MCG was also used for another demonstration sport, Australian Rules. The Olympics being an amateur competition meant that only amateurs could play in the demonstration game. A combined team of amateurs from the VFL and VFA were selected to play a state team from the Victorian Amateur Football Association (VAFA). The game was played 7 December 1956 with the VAFA side, wearing white jumpers, green collars and the Olympic rings on their chests, winning easily 81 to 55. One of the players chosen for the VFA side was Lindsay Gaze (although he never got off the bench) who would go on to make his mark in another sport, basketball, rather than Australian Rules.


title: Melbourne Cricket Ground

text: The MCG's link with its Olympic past continues to this day. Within its walls is the IOC-endorsed Australian Gallery of Sport and Olympic Museum.


title: Melbourne Cricket Ground

text: Forty-four years later at the 2000 Summer Olympics in Sydney, the ground hosted several soccer preliminaries, making it one of a few venues ever used for more than one Olympics.


title: Melbourne Cricket Ground

text: The Opening and Closing Ceremonies of the 2006 Commonwealth Games were held at the MCG, as well as athletics events during the games. The games began on 15 March and ended on 26 March.


title: Melbourne Cricket Ground

text: The seating capacity of the stadium during the games was 80,000. A total of 47 events were contested, of which 24 by male and 23 by female athletes. Furthermore, three men's and three women's disability events were held within the programme. All athletics events took place within the Melbourne Cricket Ground, while the marathon and racewalking events took place on the streets of Melbourne and finished at the main stadium.


title: Melbourne Cricket Ground

text: The hosts Australia easily won the medals table with 16 golds and 41 medals in total. Jamaica came second with 10 golds and 22 medals, while Kenya and England were the next best performers. A total of eleven Games records were broken over the course of the seven-day competition. Six of the records were broken by Australian athletes.


title: Melbourne Cricket Ground

text: The first game of Rugby Union to be played on the ground was on Saturday, 29 June 1878, when the Waratah Club of Sydney played Carlton Football Club in a return of the previous year's contests in Sydney where the clubs had competed in both codes of football. The match, watched by a crowd of between 6,000 and 7,000 resulted in a draw; one goal and one try being awarded to each team.


title: Melbourne Cricket Ground

text: The next Rugby match was held on Wednesday 29 June 1881, when the Wanderers, a team organised under the auspices of the Melbourne Cricket Club, played a team representing a detached Royal Navy squadron then visiting Melbourne. The squadron team won by one goal and one try to nil.


title: Melbourne Cricket Ground

text: It was not until 19 August 1899 that the MCG was again the venue for a Union match, this time Victoria v the British Lions (as they were later to be called). During the preceding week the Victorians had held several trial and practice matches there, as well as several training sessions, despite which they were defeated


title: Melbourne Cricket Ground

text: Nine years later, on Monday, 10 August 1908, Victoria was again the host, this time to the Australian team en route to Great Britain and soon to be dubbed the First Wallabies. Despite being held on a working day some 1,500 spectators attended to see the visitors win by 26–6.


title: Melbourne Cricket Ground

text: On Saturday, 6 July 1912 the MCG was the venue, for the only time ever, of a match between two Victorian Rugby Union clubs, Melbourne and East Melbourne, the former winning 9–5 in what was reported to be ‘... one of the finest exhibitions of the Rugby game ever seen in Victoria.' It was played before a large crowd as a curtain raiser to a State Rules match against South Australia.


title: Melbourne Cricket Ground

text: On Saturday 18 June 1921, in another curtain raiser, this time to a Melbourne-Fitzroy League game, a team representing Victoria was soundly beaten 51–0 by the South African Springboks in front of a crowd of 11,214.


title: Melbourne Cricket Ground

text: It was nine years later, on Saturday 13 September 1930, that the British Lions returned to play Victoria, again before a crowd of 7,000, this time defeating the home side 41–36, a surprisingly narrow winning margin.


title: Melbourne Cricket Ground

text: The first post war match at the MCG was on 21 May 1949 when the NZ Maoris outclassed a Southern States side 35–8 before a crowd of close to 10,000. A year later, on 29 July 1950, for the first and only time, Queensland travelled to Victoria to play an interstate match, defeating their hosts 31–12 before a crowd of 7,479.


title: Melbourne Cricket Ground

text: In the following year the MCG was the venue for a contest between the New Zealand All Blacks and an Australian XV . This was on 30 June 1951 before some 9,000 spectators and resulted in a convincing 56–11 win for the visitors.


title: Melbourne Cricket Ground

text: Union did not return to the MCG until the late 1990s, for several night time Test matches, both Australia v New Zealand All Blacks as part of the Tri Nations Series. The first, on Saturday 26 July 1997, being notable for an attendance of 90,119, the visitors decisively winning 33–18 and the second, on Saturday 11 July 1998, for a victory to Australia of 24–16. Australia and New Zealand met again at the MCG during the 2007 Tri Nations Series on 30 June, the hosts again winning, this time by 20 points to 15 in front of a crowd of 79,322.


title: Melbourne Cricket Ground

text: Rugby league was first played at the ground on 15 August 1914, with the New South Wales team losing to England 15–21.


title: Melbourne Cricket Ground

text: The first ever State of Origin match at the MCG (and second in Melbourne) was Game II of the 1994 series, and the attendance of 87,161 set a new record rugby league crowd in Australia. The MCG was also the venue for Game II of the 1995 State of Origin series and drew 52,994, the most of any game that series. The second game of the 1997 State of Origin series, which, due to the Super League war only featured Australian Rugby League-signed players, was played there too, but only attracted 25,105, the lowest in a series that failed to attract over 35,000 to any game.


title: Melbourne Cricket Ground

text: The Melbourne Storm played two marquee games at the MCG in 2000. This was the first time that they had played outside of their normal home ground of Olympic Park Stadium which held 18,500 people. Their first game was held on 3 March 2000 against the St. George Illawarra Dragons in a rematch of the infamous 1999 NRL Grand Final. Dragons player Anthony Mundine said the Storm were 'not worthy premiers' and they responded by running in 12 tries to two, winning 70–10 in front of 23,239 fans. This was their biggest crowd they had played against until 33,427 turned up to the 2007 Preliminary Final at Docklands Stadium which saw Melbourne defeat the Parramatta Eels 26–10. The record home and away crowd record has also been overhauled, when a match at Docklands in 2010 against St George attracted 25,480 spectators. Their second game attracted only 15,535 spectators and was up against the Cronulla Sharks on 24 June 2000. Once again, the Storm won 22–16.


title: Melbourne Cricket Ground

text: It was announced in June 2014 that the ground would host its first State of Origin match since 1997. Game II of the 2015 series was played at the venue, with an all-time record State of Origin crowd of 91,513 attending the match. The attendance is 19th on the all time rugby league attendance list and the 4th highest rugby league attendance in Australia.


title: Melbourne Cricket Ground

text: The MCG hosted its fifth State of Origin match on 6 June 2018. In front of a crowd of 87,122, the third largest State of Origin crowd in Victoria, New South Wales defeated Queensland 22-12.


title: Melbourne Cricket Ground

text: On 9 February 2006 Victorian premier Steve Bracks and Football Federation Australia chairman Frank Lowy announced that the MCG would host a world class soccer event each year from 2006 until 2009 inclusive.


title: Melbourne Cricket Ground

text: The agreement sees an annual fixture at the MCG, beginning with a clash between Australia and European champions Greece on 25 May 2006 in front of a sell-out crowd of 95,103, before Australia left to contest in the World Cup finals. Australia beat Greece 1–0. The Socceroos also hosted a match in 2007 against Argentina, losing 1–0, as well as 2010 FIFA World Cup qualification matches in 2009 against Japan, which attracted 81,872 fans as Australia beat Japan 2–1 via 2 Tim Cahill headers after falling behind 1–0 late in the 1st half. In 2010 it was announced that as a warm up to the 2010 FIFA World Cup which the Australians had qualified for, they would play fellow qualified nation New Zealand on 24 May at the MCG.


title: Melbourne Cricket Ground

text: In 1878 the Melbourne Cricket Club's Lawn Tennis Committee laid an asphalt court at the MCG and Victoria's first game of tennis was played there. A second court of grass was laid in 1879 and the first Victorian Championship played on it in 1880. The first inter-colonial championship was played in 1883 and the first formal inter-state match between NSW and Victoria played in 1884 with Victoria winning.


title: Melbourne Cricket Ground

text: In 1889 the MCC arranged for tennis to be played at the Warehousemen's Cricket Ground (now known as the Albert Cricket Ground), at Albert Park, rather than at the MCG.


title: Melbourne Cricket Ground

text: It was at the MCG in 1869 that one of Australia's first bicycle races was held. The event was for velocipedes, crude wooden machines with pedals on the front wheels. In 1898 the Austral Wheel Race was held at the MCG attracting a crowd of 30,000 to see cyclists race for a total of £400 in prize money, with 1st, 2nd, and 3rd place winning £240, £120, and £40 respectively.


title: Melbourne Cricket Ground

text: The Tattersall's Parade of the Champions undertaking is a gift to the people of Australia by Tattersall's and is a focal point of the Yarra Park precinct.


title: Melbourne Cricket Ground

text: The MCG is a magnet for tourists worldwide and the statues reinforce the association between the elite sportsmen and women who have competed here and the stadium that rejoiced in their performances.


title: Melbourne Cricket Ground

text: In 2010, the Melbourne Cricket Club (MCC) announced an expansion to the list of sporting statues placed around the MCG precinct in partnership with Australia Post.


title: Melbourne Cricket Ground

text: The Australia Post Avenue of Legends project aimed to place a minimum of five statues in Yarra Park, extending from the gate 2 MCC members entrance up the avenue towards Wellington Parade. The most recent addition of Kevin Bartlett was unveiled in March 2017.


title: Bibimbap

text: Bibimbap ( , from Korean , literally "mixed rice"), sometimes romanized as bi bim bap or bi bim bop, is a Korean rice dish. The term "bibim" means "mixing" and "bap" refers to cooked rice. "Bibimbap" is served as a bowl of warm white rice topped with "namul" (sautéed and seasoned vegetables) or kimchi (traditional fermented vegetables) and "gochujang" (chili pepper paste), soy sauce, or "doenjang" (a fermented soybean paste). A raw or fried egg and sliced meat (usually beef) are common additions. The hot dish is stirred together thoroughly just before eating.


title: Bibimbap

text: In South Korea, Jeonju, Jinju, and Tongyeong are especially famous for their versions of bibimbap. In 2011, the dish was listed at number 40 on the "World's 50 most delicious foods" readers' poll compiled by CNN Travel.


title: Bibimbap

text: The origin of the many names of bibimbap come from Korea's hanja based records, originally appearing in "Yokjokumun" () of "Kijae-jabki" () by Park Dong-ryang () in the end of 16th century (around 1590). This record associated the original bibimbap as ""hondonban" ()" This later went on to become "bubuiembap" () nearly 200 years after the hanja record, and was documented in a Hangul record. The hanja dictionary () indeed contained ""bubuida" ()" or ""bubuiem" (), "Dong" ()" in hanja, which meant "mix" or "" in Korean. In the late 19th century the two names were recorded for the recipe being () and (), with the recipe being written in pure Korean. Other various recordings after this include (in Hanja) (, ), (), and () and also (); then in Hangeul, (), (), (), (), (), and ().


title: Bibimbap

text: The exact origin of bibimbap () is unknown. People could have started mixing bap (rice) with banchan (side dishes) after the outdoor "jesa" (rites), such as "sansinje" (rite for mountain gods) or "dongsinje" (rite for village gods), where they needed to "eat with the god" but did not have as many cooking pots and items of crockery to hand as they would normally have at home. Jeonju Bibimbap is an old-fashioned and delicious dish. Some scholars assert that bibimbap originates from the traditional practice of mixing all the food offerings made at an "jesa" (ancestral rite) in a bowl before partaking of it.


title: Bibimbap

text: Ordinary people ate bibimbap on the eve of the lunar new year as the people at that time felt that they had to get rid of all of the leftover side dishes before the new year. The solution to this problem was to put all of the leftovers in a bowl of rice and to mix them together. Farmers ate bibimbap during farming season as it was the easiest way to make food for a large number of people. Bibimbap was served to the king, usually as a lunch or a between-meal snack. There was more than vegetables in this bibimbap.


title: Bibimbap

text: Bibimbap was recorded as "hondon-ban" () in the history book "Historical notes of Gijae" by the Joseon scholar Bak Dong-ryang (1569–1635). In the "Diary of Cheongdae" by another Joseon scholar Gwon Sang-il (1679–1760), it was recorded as "goldong-ban" (). The dish was also recorded in "Complete Works of Seongho" by Yi Ik (1681–1764) as "goldong" (), in "Complete Works of Cheongjanggwan" by Yi deok-mu (1741–1793) as "goldong-ban" (), and in "Works of Nakhasaeng" by Yi Hak-gyu (1770–1835) as both "goldong-ban" () and "goldong" ().


title: Bibimbap

text: The hangul transcription () first appears in the 1810 encyclopedia "Mongyupyeon" by Jang Hon. The 1870 encyclopedia states that the dish name is written as () in hanja but is read as (), a probable transcription of the native Korean ().


title: Bibimbap

text: In "Collected Works of Oju" written by Yi Gyu-gyeong (1788–1856), recorded varieties of bibimbap, such as vegetable bibimbap, miscellany bibimbap, hoe bibimbap, shad bibimbap, prawn bibimbap, salted shrimp bibimbap, shrimp roe bibimbap, marinated crab bibimbap, wild chive bibimbap, fresh cucumber bibimbap, gim flake bibimbap, gochujang bibimbap, soybean sprout bibimbap, and also stated that bibimbap was a local specialty of Pyongyang, along with naengmyeon and gamhongno.


title: Bibimbap

text: The first known recipe for "bibimbap" is found in the "Siuijeonseo", an anonymous cookbook from the late 19th century.


title: Bibimbap

text: The late 20th century brought about the globalization of the Korean culture, traditions, and food to many areas of the world with many restaurant chains being opened up in various international airports that encourage the sale of bibimbap.


title: Bibimbap

text: Bibimbap is an extensively customizable food with a variety of ingredients that can be used in its creation. It has existed in Korea for centuries and even has a place in society today. It came from early rural Koreans taking leftover vegetables, sometimes having meat, with rice and mixing them in a bowl. This was cheap and did not require all of the time and space of a traditional meal.


title: Bibimbap

text: Bibimbap was originally written in hanja due to the ancient use of the Chinese characters in Korea. There are two separate ancient writings that suggest the original reasoning behind the creation and use of bibimbap. The first one, "People's Unofficial Story of Jeonju" (), tells of Jeonju bibimbap being used in occasions such as parties that included government officials of provincial offices. The second being, "Lannokgi" (), which told of bibimbap being made by the wives, of farmers, who had no time to prepare meals the traditional way with many side dishes, and instead they were able to throw most of the ingredients in a bowl sometimes adding whatever they happened to be cultivating. Although bibimbap was originally rarely mentioned and mostly only in hanja records, it began to be more frequently referenced and in Hangul (Korean alphabets) records as well upon the creation of Hangul by the King Sejong the Great to improve the state's literacy.


title: Bibimbap

text: The division of Korea in the 20th century caused a cultural divide in the creation of bibimbap with two types related to both North and South Korea. The most famous regions for traditional bibimbap happen to be Pyongyang for its vegetable bibimbap in the North and Jeonju for its Jeonju Bibimbap.


title: Bibimbap

text: In the late 20th century, "bibimbap" started to become widespread in many countries in the West, due to its simplicity, cheap cost, and delicious taste. Many airlines connecting to South Korea via Incheon International Airport began to serve it, and it was accepted more globally as a popular Korean dish. Bibimbap has also been described as a symbol of the Korean culture to non-Koreans due to Korea becoming more acceptable to foreigners and multicultural traditions.


title: Bibimbap

text: Bibimbap can be various kinds of bibimbap depending on the ingredients. Vegetables commonly used in "bibimbap" include julienned "oi" (cucumber), aehobak (courgette), "mu" (radish), mushrooms, "doraji" (bellflower root), and "gim", as well as spinach, soybean sprouts, and "gosari" (bracken fern stems). "Dubu" (tofu), either plain or sautéed, or a leaf of lettuce may be added, or chicken or seafood may be substituted for beef. For visual appeal, the vegetables are often placed so adjacent colors complement each other. In the South Korean version, sesame oil, red pepper paste (gochujang), and sesame seeds are added.


title: Bibimbap

text: Jeonju is the name of a province in South Korea known for its long standing food preparation style which has been praised and passed down throughout the past thousands of years. Jeonju is the most famous place for Bibimbap. Jeonju bibimbap along with kongnamul-gukbap are signature dishes of Jeonju. Jeonju bibimbap is one of the most popular dishes in Korea and around the world. It is usually topped with quality Jeonju soy bean sprouts, hwangpo-muk, gochujang, jeopjang, and seasoned raw beef and served with kongnamul-gukbap. The rice of Jeonju bibimbap is specially prepared by being cooked in beef shank broth for flavor and finished with sesame oil for flavor and nutrients. Jeonju Bibimbap Festival is also held every year.


title: Bibimbap

text: Hot stone pot bibimbap ("dolsot-bibimbap", ) is a variation of bibimbap served in a very hot "dolsot" (stone pot) in which a raw egg is cooked against the sides of the bowl. The bowl is so hot that anything that touches it sizzles for minutes. Before the rice is placed in the bowl, the bottom of the bowl is coated with sesame oil, making the layer of the rice touching the bowl cook to a crisp, golden brown known as "nurungji" (). This variation of bibimbap is typically served to order, with the egg and other ingredients mixed in the pot just prior to consumption.


title: Bibimbap

text: Yakcho-bibimbap () is from Jecheon. Jecheon is a great place for medicinal herbs to grow. People could get a thicker root and more medicinal herb than other areas. The combination of the medicinal herbs and popular bibimbap made it one of the most popular foods in Jecheon.


title: Bibimbap

text: "Hoedeopbap" () is a bibimbap with a variety of raw seafood, such as tilapia, salmon, tuna or sometimes octopus, but each bowl of rice usually contains only one variety of seafood. The term "hoe" in the word means raw fish. The dish is popular along the coasts of Korea where fish are abundant.


title: Bibimbap

text: Bibimbap ingredients are rich in symbolism. Black or dark colours represent north and the kidneys – for instance, shiitake mushrooms, bracken ferns or nori seaweed. Red or orange represents south and the heart, with chilli, carrots, and jujube dates. Green represents east and the liver, with cucumber and spinach. White is west or the lungs, with foods such as bean sprouts, radish, and rice. And yellow represents the centre, or stomach. Foods include pumpkin, potato or egg.


title: Koyoharu Gotouge

text: Gotouge was included as "Phenoms" in "Time"s annual list of 100 Most Influential People, making them the first manga artist to receive the achievement.


title: Koyoharu Gotouge

text: Gotouge was born in Fukuoka Prefecture, Japan, on May 5, 1989. The author maintains anonymity in public.


title: Koyoharu Gotouge

text: In 2013, Gotouge debuted in the 70th Jump Treasure Newcomer Manga Awards with the one-shot work . Three more one-shots followed: , published in "Jump Next!" in 2014; , published in "Weekly Shōnen Jump" in 2014; and , published in "Weekly Shōnen Jump" in 2015.


title: Koyoharu Gotouge

text: After "Haeniwa no Zigzag" failed to be a serialized series, Tatsuhiko Katayama (Gotouge's first editor) suggested to start a series with an "easy-to-understand theme". Gotouge's debut work "Kagarigari" would serve as a basis for "". The series was published in "Weekly Shōnen Jump" from February 15, 2016, to May 18, 2020. It became a success, with over 150 million copies in circulation (including digital copies) as of February 2021, making it one of the best-selling manga series of all time.


title: Koyoharu Gotouge

text: In February 2021, Gotouge commented that their next project would be a science fiction romantic comedy story.


title: Koyoharu Gotouge

text: Gotouge has mentioned Hirohiko Araki's "JoJo's Bizarre Adventure;" Masashi Kishimoto's "Naruto;" Tite Kubo's "Bleach;" and Hideaki Sorachi's "Gin Tama" as influences on their work.


title: Koyoharu Gotouge

text: In 2020, Gotouge received the 2nd Kodansha's Noma Publishing Culture Award, which honors those who have contributed to "reinventing publishing". Gotouge received the award due to the franchise's sales, which boosted the entire publishing industry from 2019 to 2020. In the same year, Gotouge also won the award for best screenplay/original story at the Tokyo Anime Award Festival.


title: Koyoharu Gotouge

text: In February 2021, Gotouge was included as "Phenoms" in "Time"s annual list of 100 Most Influential People, making them the first manga artist to receive the achievement. In March 2021, Gotouge won the Newcomer Award in the media fine arts category of the 2020 Minister of Education, Culture, Sports, Science and Technology Fine Arts Recommendation Awards. In 2021, Gotouge received the Special Prize of the 25th annual Tezuka Osamu Cultural Prize. In 2021, Gotouge won the Comic division's grand prize of the 50th Japan Cartoonists Association Awards.


title: Conservation of energy

text: In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be "conserved" over time. This law, first proposed and tested by Émilie du Châtelet, means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another. For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes. If one adds up all forms of energy that were released in the explosion, such as the kinetic energy and potential energy of the pieces, as well as heat and sound, one will get the exact decrease of chemical energy in the combustion of the dynamite.


title: Conservation of energy

text: Classically, conservation of energy was distinct from conservation of mass. However, special relativity shows that mass is related to energy and vice versa by "E = mc", and science now takes the view that mass-energy as a whole is conserved. Theoretically, this implies that any object with mass can itself be converted to pure energy, and vice versa. However, this is believed to be possible only under the most extreme of physical conditions, such as likely existed in the universe very shortly after the Big Bang or when black holes emit Hawking radiation.


title: Conservation of energy

text: Given the stationary-action principle, conservation of energy can be rigorously proven by Noether's theorem as a consequence of continuous time translation symmetry; that is, from the fact that the laws of physics do not change over time.


title: Conservation of energy

text: A consequence of the law of conservation of energy is that a perpetual motion machine of the first kind cannot exist; that is to say, no system without an external energy supply can deliver an unlimited amount of energy to its surroundings. Depending on the definition of energy, conservation of energy can arguably be violated by general relativity on the cosmological scale.


title: Conservation of energy

text: Ancient philosophers as far back as Thales of Miletus  550 BCE had inklings of the conservation of some underlying substance of which everything is made. However, there is no particular reason to identify their theories with what we know today as "mass-energy" (for example, Thales thought it was water). Empedocles (490–430 BCE) wrote that in his universal system, composed of four roots (earth, air, water, fire), "nothing comes to be or perishes"; instead, these elements suffer continual rearrangement. Epicurus ( 350 BCE) on the other hand believed everything in the universe to be composed of indivisible units of matter—the ancient precursor to 'atoms'—and he too had some idea of the necessity of conservation, stating that "the sum total of things was always such as it is now, and such it will ever remain."


title: Conservation of energy

text: In 1605, Simon Stevin was able to solve a number of problems in statics based on the principle that perpetual motion was impossible.


title: Conservation of energy

text: In 1639, Galileo published his analysis of several situations—including the celebrated "interrupted pendulum"—which can be described (in modern language) as conservatively converting potential energy to kinetic energy and back again. Essentially, he pointed out that the height a moving body rises is equal to the height from which it falls, and used this observation to infer the idea of inertia. The remarkable aspect of this observation is that the height to which a moving body ascends on a frictionless surface does not depend on the shape of the surface.


title: Conservation of energy

text: In 1669, Christiaan Huygens published his laws of collision. Among the quantities he listed as being invariant before and after the collision of bodies were both the sum of their linear momenta as well as the sum of their kinetic energies. However, the difference between elastic and inelastic collision was not understood at the time. This led to the dispute among later researchers as to which of these conserved quantities was the more fundamental. In his "Horologium Oscillatorium", he gave a much clearer statement regarding the height of ascent of a moving body, and connected this idea with the impossibility of perpetual motion. Huygens's study of the dynamics of pendulum motion was based on a single principle: that the center of gravity of a heavy object cannot lift itself.


title: Conservation of energy

text: Between 1676–1689, Gottfried Leibniz first attempted a mathematical formulation of the kind of energy that is associated with "motion" (kinetic energy). Using Huygens's work on collision, Leibniz noticed that in many mechanical systems (of several masses "m", each with velocity "v"),


title: Conservation of energy

text: was conserved so long as the masses did not interact. He called this quantity the "vis viva" or "living force" of the system. The principle represents an accurate statement of the approximate conservation of kinetic energy in situations where there is no friction. Many physicists at that time, such as Newton, held that the conservation of momentum, which holds even in systems with friction, as defined by the momentum:


title: Conservation of energy

text: was the conserved "vis viva". It was later shown that both quantities are conserved simultaneously given the proper conditions, such as in an elastic collision.


title: Conservation of energy

text: In 1687, Isaac Newton published his "Principia", which was organized around the concept of force and momentum. However, the researchers were quick to recognize that the principles set out in the book, while fine for point masses, were not sufficient to tackle the motions of rigid and fluid bodies. Some other principles were also required.


title: Conservation of energy

text: By the 1690s, Leibniz was arguing that conservation of "vis viva" and conservation of momentum undermined the then-popular philosophical doctrine of interactionist dualism. (During the 19th century, when conservation of energy was better understood, Leibniz's basic argument would gain widespread acceptance. Some modern scholars continue to champion specifically conservation-based attacks on dualism, while others subsume the argument into a more general argument about causal closure.)


title: Conservation of energy

text: The law of conservation of vis viva was championed by the father and son duo, Johann and Daniel Bernoulli. The former enunciated the principle of virtual work as used in statics in its full generality in 1715, while the latter based his "Hydrodynamica", published in 1738, on this single vis viva conservation principle. Daniel's study of loss of vis viva of flowing water led him to formulate the Bernoulli's principle, which asserts the loss to be proportional to the change in hydrodynamic pressure. Daniel also formulated the notion of work and efficiency for hydraulic machines; and he gave a kinetic theory of gases, and linked the kinetic energy of gas molecules with the temperature of the gas.


title: Conservation of energy

text: This focus on the vis viva by the continental physicists eventually led to the discovery of stationarity principles governing mechanics, such as the D'Alembert's principle, Lagrangian, and Hamiltonian formulations of mechanics.


title: Conservation of energy

text: Émilie du Châtelet (1706–1749) proposed and tested the hypothesis of the conservation of total energy, as distinct from momentum. Inspired by the theories of Gottfried Leibniz, she repeated and publicized an experiment originally devised by Willem 's Gravesande in 1722 in which balls were dropped from different heights into a sheet of soft clay. Each ball's kinetic energy—as indicated by the quantity of material displaced—was shown to be proportional to the square of the velocity. The deformation of the clay was found to be directly proportional to the height from which the balls were dropped, equal to the initial potential energy. Earlier workers, including Newton and Voltaire, had all believed that "energy" (so far as they understood the concept at all) was not distinct from momentum and therefore proportional to velocity. According to this understanding, the deformation of the clay should have been proportional to the square root of the height from which the balls were dropped. In classical physics, the correct formula is formula_3, where formula_4 is the kinetic energy of an object, formula_5 its mass and formula_6 its speed. On this basis, du Châtelet proposed that energy must always have the same dimensions in any form, which is necessary to be able to consider it in different forms (kinetic, potential, heat, ...).


title: Conservation of energy

text: Engineers such as John Smeaton, Peter Ewart, , Gustave-Adolphe Hirn, and Marc Seguin recognized that conservation of momentum alone was not adequate for practical calculation and made use of Leibniz's principle. The principle was also championed by some chemists such as William Hyde Wollaston. Academics such as John Playfair were quick to point out that kinetic energy is clearly not conserved. This is obvious to a modern analysis based on the second law of thermodynamics, but in the 18th and 19th centuries, the fate of the lost energy was still unknown.


title: Conservation of energy

text: Gradually it came to be suspected that the heat inevitably generated by motion under friction was another form of "vis viva". In 1783, Antoine Lavoisier and Pierre-Simon Laplace reviewed the two competing theories of "vis viva" and caloric theory. Count Rumford's 1798 observations of heat generation during the boring of cannons added more weight to the view that mechanical motion could be converted into heat and (that it was important) that the conversion was quantitative and could be predicted (allowing for a universal conversion constant between kinetic energy and heat). "Vis viva" then started to be known as "energy", after the term was first used in that sense by Thomas Young in 1807.


title: Conservation of energy

text: which can be understood as converting kinetic energy to work, was largely the result of Gaspard-Gustave Coriolis and Jean-Victor Poncelet over the period 1819–1839. The former called the quantity "quantité de travail" (quantity of work) and the latter, "travail mécanique" (mechanical work), and both championed its use in engineering calculations.


title: Conservation of energy

text: In the paper "Über die Natur der Wärme" (German "On the Nature of Heat/Warmth"), published in the "Zeitschrift für Physik" in 1837, Karl Friedrich Mohr gave one of the earliest general statements of the doctrine of the conservation of energy: "besides the 54 known chemical elements there is in the physical world one agent only, and this is called "Kraft" [energy or work]. It may appear, according to circumstances, as motion, chemical affinity, cohesion, electricity, light and magnetism; and from any one of these forms it can be transformed into any of the others."


title: Conservation of energy

text: A key stage in the development of the modern conservation principle was the demonstration of the "mechanical equivalent of heat". The caloric theory maintained that heat could neither be created nor destroyed, whereas conservation of energy entails the contrary principle that heat and mechanical work are interchangeable.


title: Conservation of energy

text: In the middle of the eighteenth century, Mikhail Lomonosov, a Russian scientist, postulated his corpusculo-kinetic theory of heat, which rejected the idea of a caloric. Through the results of empirical studies, Lomonosov came to the conclusion that heat was not transferred through the particles of the caloric fluid.


title: Conservation of energy

text: In 1798, Count Rumford (Benjamin Thompson) performed measurements of the frictional heat generated in boring cannons and developed the idea that heat is a form of kinetic energy; his measurements refuted caloric theory, but were imprecise enough to leave room for doubt.


title: Conservation of energy

text: The mechanical equivalence principle was first stated in its modern form by the German surgeon Julius Robert von Mayer in 1842. Mayer reached his conclusion on a voyage to the Dutch East Indies, where he found that his patients' blood was a deeper red because they were consuming less oxygen, and therefore less energy, to maintain their body temperature in the hotter climate. He discovered that heat and mechanical work were both forms of energy, and in 1845, after improving his knowledge of physics, he published a monograph that stated a quantitative relationship between them.


title: Conservation of energy

text: Meanwhile, in 1843, James Prescott Joule independently discovered the mechanical equivalent in a series of experiments. In the most famous, now called the "Joule apparatus", a descending weight attached to a string caused a paddle immersed in water to rotate. He showed that the gravitational potential energy lost by the weight in descending was equal to the internal energy gained by the water through friction with the paddle.


title: Conservation of energy

text: Over the period 1840–1843, similar work was carried out by engineer Ludwig A. Colding, although it was little known outside his native Denmark.


title: Conservation of energy

text: Both Joule's and Mayer's work suffered from resistance and neglect but it was Joule's that eventually drew the wider recognition.


title: Conservation of energy

text: In 1844, William Robert Grove postulated a relationship between mechanics, heat, light, electricity, and magnetism by treating them all as manifestations of a single "force" ("energy" in modern terms). In 1846, Grove published his theories in his book "The Correlation of Physical Forces". In 1847, drawing on the earlier work of Joule, Sadi Carnot, and Émile Clapeyron, Hermann von Helmholtz arrived at conclusions similar to Grove's and published his theories in his book "Über die Erhaltung der Kraft" ("On the Conservation of Force", 1847). The general modern acceptance of the principle stems from this publication.


title: Conservation of energy

text: In 1850, William Rankine first used the phrase "the law of the conservation of energy" for the principle.


title: Conservation of energy

text: In 1877, Peter Guthrie Tait claimed that the principle originated with Sir Isaac Newton, based on a creative reading of propositions 40 and 41 of the "Philosophiae Naturalis Principia Mathematica". This is now regarded as an example of Whig history.


title: Conservation of energy

text: Matter is composed of atoms and what makes up atoms. Matter has "intrinsic" or "rest" mass. In the limited range of recognized experience of the nineteenth century, it was found that such rest mass is conserved. Einstein's 1905 theory of special relativity showed that rest mass corresponds to an equivalent amount of "rest energy". This means that "rest mass" can be converted to or from equivalent amounts of (non-material) forms of energy, for example, kinetic energy, potential energy, and electromagnetic radiant energy. When this happens, as recognized in twentieth-century experience, rest mass is not conserved, unlike the "total" mass or "total" energy. All forms of energy contribute to the total mass and total energy.


title: Conservation of energy

text: For example, an electron and a positron each have rest mass. They can perish together, converting their combined rest energy into photons which have electromagnetic radiant energy but no rest mass. If this occurs within an isolated system that does not release the photons or their energy into the external surroundings, then neither the total "mass" nor the total "energy" of the system will change. The produced electromagnetic radiant energy contributes just as much to the inertia (and to any weight) of the system as did the rest mass of the electron and positron before their demise. Likewise, non-material forms of energy can perish into matter, which has rest mass.


title: Conservation of energy

text: Thus, conservation of energy ("total", including material or "rest" energy) and conservation of mass ("total", not just "rest") are one (equivalent) law. In the 18th century, these had appeared as two seemingly-distinct laws.


title: Conservation of energy

text: The discovery in 1911 that electrons emitted in beta decay have a continuous rather than a discrete spectrum appeared to contradict conservation of energy, under the then-current assumption that beta decay is the simple emission of an electron from a nucleus. This problem was eventually resolved in 1933 by Enrico Fermi who proposed the correct description of beta-decay as the emission of both an electron and an antineutrino, which carries away the apparently missing energy.


title: Conservation of energy

text: where formula_10 is the quantity of energy added to the system by a heating process, formula_11 is the quantity of energy lost by the system due to work done by the system on its surroundings, and formula_12 is the change in the internal energy of the system.


title: Conservation of energy

text: The δ's before the heat and work terms are used to indicate that they describe an increment of energy which is to be interpreted somewhat differently than the formula_12 increment of internal energy (see Inexact differential). Work and heat refer to kinds of process which add or subtract energy to or from a system, while the internal energy formula_14 is a property of a particular state of the system when it is in unchanging thermodynamic equilibrium. Thus the term "heat energy" for formula_10 means "that amount of energy added as a result of heating" rather than referring to a particular form of energy. Likewise, the term "work energy" for formula_11 means "that amount of energy lost as a result of work". Thus one can state the amount of internal energy possessed by a thermodynamic system that one knows is presently in a given state, but one cannot tell, just from knowledge of the given present state, how much energy has in the past flowed into or out of the system as a result of its being heated or cooled, nor as a result of work being performed on or by the system.


title: Conservation of energy

text: Entropy is a function of the state of a system which tells of limitations of the possibility of conversion of heat into work.


title: Conservation of energy

text: where formula_18 is the pressure and formula_19 is a small change in the volume of the system, each of which are system variables. In the fictive case in which the process is idealized and infinitely slow, so as to be called "quasi-static", and regarded as reversible, the heat being transferred from a source with temperature infinitesimally above the system temperature, the heat energy may be written


title: Conservation of energy

text: where formula_21 is the temperature and formula_22 is a small change in the entropy of the system. Temperature and entropy are variables of the state of a system.


title: Conservation of energy

text: If an open system (in which mass may be exchanged with the environment) has several walls such that the mass transfer is through rigid walls separate from the heat and work transfers, then the first law may be written as


title: Conservation of energy

text: where formula_24 is the added mass of species formula_25 and formula_26 is the corresponding enthalpy per unit mass. Note that generally formula_27 in this case, as matter carries its own entropy. Instead, formula_28, where formula_29 is the entropy per unit mass of type formula_25, from which we recover the fundamental thermodynamic relation


title: Conservation of energy

text: because the chemical potential formula_32 is the partial molar Gibbs free energy of species formula_25 and the Gibbs free energy formula_34.


title: Conservation of energy

text: The conservation of energy is a common feature in many physical theories. From a mathematical point of view it is understood as a consequence of Noether's theorem, developed by Emmy Noether in 1915 and first published in 1918. In any physical theory that obeys the stationary-action principle, the theorem states that every continuous symmetry has an associated conserved quantity; if the theory's symmetry is time invariance, then the conserved quantity is called "energy". The energy conservation law is a consequence of the shift symmetry of time; energy conservation is implied by the empirical fact that the laws of physics do not change with time itself. Philosophically this can be stated as "nothing depends on time per se". In other words, if the physical system is invariant under the continuous symmetry of time translation, then its energy (which is the canonical conjugate quantity to time) is conserved. Conversely, systems that are not invariant under shifts in time (e.g. systems with time-dependent potential energy) do not exhibit conservation of energy – unless we consider them to exchange energy with another, an external system so that the theory of the enlarged system becomes time-invariant again. Conservation of energy for finite systems is valid in physical theories such as special relativity and quantum theory (including QED) in the flat space-time.


title: Conservation of energy

text: With the discovery of special relativity by Henri Poincaré and Albert Einstein, the energy was proposed to be a component of an energy-momentum 4-vector. Each of the four components (one of energy and three of momentum) of this vector is separately conserved across time, in any closed system, as seen from any given inertial reference frame. Also conserved is the vector length (Minkowski norm), which is the rest mass for single particles, and the invariant mass for systems of particles (where momenta and energy are separately summed before the length is calculated).


title: Conservation of energy

text: The relativistic energy of a single massive particle contains a term related to its rest mass in addition to its kinetic energy of motion. In the limit of zero kinetic energy (or equivalently in the rest frame) of a massive particle, or else in the center of momentum frame for objects or systems which retain kinetic energy, the total energy of a particle or object (including internal kinetic energy in systems) is proportional to the rest mass or invariant mass, as described by the famous equation formula_35.


title: Conservation of energy

text: Thus, the rule of "conservation of energy" over time in special relativity continues to hold, so long as the reference frame of the observer is unchanged. This applies to the total energy of systems, although different observers disagree as to the energy value. Also conserved, and invariant to all observers, is the invariant mass, which is the minimal system mass and energy that can be seen by any observer, and which is defined by the energy–momentum relation.


title: Conservation of energy

text: General relativity introduces new phenomena. In an expanding universe, photons spontaneously redshift and tethers spontaneously gain tension; if vacuum energy is positive, the total vacuum energy of the universe appears to spontaneously increase as the volume of space increases. Some scholars claim that energy is no longer meaningfully conserved in any identifiable form.


title: Conservation of energy

text: John Baez's view is that energy–momentum conservation is not well-defined except in certain special cases. Energy-momentum is typically expressed with the aid of a stress–energy–momentum pseudotensor. However, since pseudotensors are not tensors, they do not transform cleanly between reference frames. If the metric under consideration is static (that is, does not change with time) or asymptotically flat (that is, at an infinite distance away spacetime looks empty), then energy conservation holds without major pitfalls. In practice, some metrics, notably the Friedmann–Lemaître–Robertson–Walker metric that appears to govern the universe, do not satisfy these constraints and energy conservation is not well defined. Besides being dependent on the coordinate system, pseudotensor energy is dependent on the type of pseudotensor in use; for example, the energy exterior to a Kerr–Newman black hole is twice as large when calculated from Møller's pseudotensor as it is when calculated using the Einstein pseudotensor.


title: Conservation of energy

text: For asymptotically flat universes, Einstein and others salvage conservation of energy by introducing a specific global gravitational potential energy that cancels out mass-energy changes triggered by spacetime expansion or contraction. This global energy has no well-defined density and cannot technically be applied to a non-asymptotically flat universe; however, for practical purposes this can be finessed, and so by this view, energy is conserved in our universe. Alan Guth even famously stated that the universe might be "the ultimate free lunch", and theorized that, when accounting for gravitational potential energy, the net energy of the Universe is zero.


title: Conservation of energy

text: In quantum mechanics, the energy of a quantum system is described by a self-adjoint (or Hermitian) operator called the Hamiltonian, which acts on the Hilbert space (or a space of wave functions) of the system. If the Hamiltonian is a time-independent operator, emergence probability of the measurement result does not change in time over the evolution of the system. Thus the expectation value of energy is also time independent. The local energy conservation in quantum field theory is ensured by the quantum Noether's theorem for the energy-momentum tensor operator. Thus energy is conserved by the normal unitary evolution of a quantum system.


title: Conservation of energy

text: However, when the non-unitary Born rule is applied, the system's energy is measured with an energy that can be below or above the expectation value, if the system was not in an energy eigenstate. (For macroscopic systems, this effect is usually too small to measure.) The disposition of this energy gap is not well-understood; some physicists believe that the energy is transferred to or from the macroscopic environment in the course of the measurement process, while others believe that the observable energy is only conserved "on average". No experiment has been confirmed as definitive evidence of violations of the conservation of energy principle in quantum mechanics, but that doesn't rule out that some newer experiments, as proposed, may find evidence of violations of the conservation of energy principle in quantum mechanics.


title: Conservation of energy

text: In the context of perpetual motion machines such as the Orbo, Professor Eric Ash has argued at the BBC: "Denying [conservation of energy] would undermine not just little bits of science - the whole edifice would be no more. All of the technology on which we built the modern world would lie in ruins." It is because of conservation of energy that "we know - without having to examine details of a particular device - that Orbo cannot work."


title: Conservation of energy

text: Energy conservation has been a foundational physical principle for about two hundred years. From the point of view of modern general relativity, the lab environment can be well approximated by Minkowski spacetime, where energy is exactly conserved. The entire Earth can be well approximated by the Schwarzschild metric, where again energy is exactly conserved. Given all the experimental evidence, any new theory (such as quantum gravity), in order to be successful, will have to explain why energy has appeared to always be exactly conserved in terrestrial experiments. In some speculative theories, corrections to quantum mechanics are too small to be detected at anywhere near the current TeV level accessible through particle accelerators. Doubly special relativity models may argue for a breakdown in energy-momentum conservation for sufficiently energetic particles; such models are constrained by observations that cosmic rays appear to travel for billions of years without displaying anomalous non-conservation behavior. Some interpretations of quantum mechanics claim that observed energy tends to increase when the Born rule is applied due to localization of the wave function. If true, objects could be expected to spontaneously heat up; thus, such models are constrained by observations of large, cool astronomical objects as well as the observation of (often supercooled) laboratory experiments.


title: Neuroscience

text: Neuroscience is the scientific study of the nervous system (the brain, spinal cord, and peripheral nervous system), its functions and disorders. It is a multidisciplinary science that combines physiology, anatomy, molecular biology, developmental biology, cytology, psychology, physics, computer science, chemistry, medicine, statistics, and mathematical modeling to understand the fundamental and emergent properties of neurons, glia and neural circuits. The understanding of the biological basis of learning, memory, behavior, perception, and consciousness has been described by Eric Kandel as the "epic challenge" of the biological sciences.


title: Neuroscience

text: The scope of neuroscience has broadened over time to include different approaches used to study the nervous system at different scales. The techniques used by neuroscientists have expanded enormously, from molecular and cellular studies of individual neurons to imaging of sensory, motor and cognitive tasks in the brain.


title: Neuroscience

text: The earliest study of the nervous system dates to ancient Egypt. Trepanation, the surgical practice of either drilling or scraping a hole into the skull for the purpose of curing head injuries or mental disorders, or relieving cranial pressure, was first recorded during the Neolithic period. Manuscripts dating to 1700 BC indicate that the Egyptians had some knowledge about symptoms of brain damage.


title: Neuroscience

text: Early views on the function of the brain regarded it to be a "cranial stuffing" of sorts. In Egypt, from the late Middle Kingdom onwards, the brain was regularly removed in preparation for mummification. It was believed at the time that the heart was the seat of intelligence. According to Herodotus, the first step of mummification was to "take a crooked piece of iron, and with it draw out the brain through the nostrils, thus getting rid of a portion, while the skull is cleared of the rest by rinsing with drugs."


title: Neuroscience

text: The view that the heart was the source of consciousness was not challenged until the time of the Greek physician Hippocrates. He believed that the brain was not only involved with sensation—since most specialized organs (e.g., eyes, ears, tongue) are located in the head near the brain—but was also the seat of intelligence. Plato also speculated that the brain was the seat of the rational part of the soul. Aristotle, however, believed the heart was the center of intelligence and that the brain regulated the amount of heat from the heart. This view was generally accepted until the Roman physician Galen, a follower of Hippocrates and physician to Roman gladiators, observed that his patients lost their mental faculties when they had sustained damage to their brains.


title: Neuroscience

text: Abulcasis, Averroes, Avicenna, Avenzoar, and Maimonides, active in the Medieval Muslim world, described a number of medical problems related to the brain. In Renaissance Europe, Vesalius (1514–1564), René Descartes (1596–1650), Thomas Willis (1621–1675) and Jan Swammerdam (1637–1680) also made several contributions to neuroscience.


title: Neuroscience

text: Luigi Galvani's pioneering work in the late 1700s set the stage for studying the electrical excitability of muscles and neurons. In the first half of the 19th century, Jean Pierre Flourens pioneered the experimental method of carrying out localized lesions of the brain in living animals describing their effects on motricity, sensibility and behavior. In 1843 Emil du Bois-Reymond demonstrated the electrical nature of the nerve signal, whose speed Hermann von Helmholtz proceeded to measure, and in 1875 Richard Caton found electrical phenomena in the cerebral hemispheres of rabbits and monkeys. Adolf Beck published in 1890 similar observations of spontaneous electrical activity of the brain of rabbits and dogs. Studies of the brain became more sophisticated after the invention of the microscope and the development of a staining procedure by Camillo Golgi during the late 1890s. The procedure used a silver chromate salt to reveal the intricate structures of individual neurons. His technique was used by Santiago Ramón y Cajal and led to the formation of the neuron doctrine, the hypothesis that the functional unit of the brain is the neuron. Golgi and Ramón y Cajal shared the Nobel Prize in Physiology or Medicine in 1906 for their extensive observations, descriptions, and categorizations of neurons throughout the brain.


title: Neuroscience

text: In parallel with this research, work with brain-damaged patients by Paul Broca suggested that certain regions of the brain were responsible for certain functions. At the time, Broca's findings were seen as a confirmation of Franz Joseph Gall's theory that language was localized and that certain psychological functions were localized in specific areas of the cerebral cortex. The localization of function hypothesis was supported by observations of epileptic patients conducted by John Hughlings Jackson, who correctly inferred the organization of the motor cortex by watching the progression of seizures through the body. Carl Wernicke further developed the theory of the specialization of specific brain structures in language comprehension and production. Modern research through neuroimaging techniques, still uses the Brodmann cerebral cytoarchitectonic map (referring to study of cell structure) anatomical definitions from this era in continuing to show that distinct areas of the cortex are activated in the execution of specific tasks.


title: Neuroscience

text: During the 20th century, neuroscience began to be recognized as a distinct academic discipline in its own right, rather than as studies of the nervous system within other disciplines. Eric Kandel and collaborators have cited David Rioch, Francis O. Schmitt, and Stephen Kuffler as having played critical roles in establishing the field. Rioch originated the integration of basic anatomical and physiological research with clinical psychiatry at the Walter Reed Army Institute of Research, starting in the 1950s. During the same period, Schmitt established a neuroscience research program within the Biology Department at the Massachusetts Institute of Technology, bringing together biology, chemistry, physics, and mathematics. The first freestanding neuroscience department (then called Psychobiology) was founded in 1964 at the University of California, Irvine by James L. McGaugh. This was followed by the Department of Neurobiology at Harvard Medical School, which was founded in 1966 by Stephen Kuffler.


title: Neuroscience

text: The understanding of neurons and of nervous system function became increasingly precise and molecular during the 20th century. For example, in 1952, Alan Lloyd Hodgkin and Andrew Huxley presented a mathematical model for transmission of electrical signals in neurons of the giant axon of a squid, which they called "action potentials", and how they are initiated and propagated, known as the Hodgkin–Huxley model. In 1961–1962, Richard FitzHugh and J. Nagumo simplified Hodgkin–Huxley, in what is called the FitzHugh–Nagumo model. In 1962, Bernard Katz modeled neurotransmission across the space between neurons known as synapses. Beginning in 1966, Eric Kandel and collaborators examined biochemical changes in neurons associated with learning and memory storage in "Aplysia". In 1981 Catherine Morris and Harold Lecar combined these models in the Morris–Lecar model. Such increasingly quantitative work gave rise to numerous biological neuron models and models of neural computation.


title: Neuroscience

text: As a result of the increasing interest about the nervous system, several prominent neuroscience organizations have been formed to provide a forum to all neuroscientists during the 20th century. For example, the International Brain Research Organization was founded in 1961, the International Society for Neurochemistry in 1963, the European Brain and Behaviour Society in 1968, and the Society for Neuroscience in 1969. Recently, the application of neuroscience research results has also given rise to applied disciplines as neuroeconomics, neuroeducation, neuroethics, and neurolaw.


title: Neuroscience

text: Over time, brain research has gone through philosophical, experimental, and theoretical phases, with work on neural implants and brain simulation predicted to be important in the future.


title: Neuroscience

text: The scientific study of the nervous system increased significantly during the second half of the twentieth century, principally due to advances in molecular biology, electrophysiology, and computational neuroscience. This has allowed neuroscientists to study the nervous system in all its aspects: how it is structured, how it works, how it develops, how it malfunctions, and how it can be changed.


title: Neuroscience

text: For example, it has become possible to understand, in much detail, the complex processes occurring within a single neuron. Neurons are cells specialized for communication. They are able to communicate with neurons and other cell types through specialized junctions called synapses, at which electrical or electrochemical signals can be transmitted from one cell to another. Many neurons extrude a long thin filament of axoplasm called an axon, which may extend to distant parts of the body and are capable of rapidly carrying electrical signals, influencing the activity of other neurons, muscles, or glands at their termination points. A nervous "system" emerges from the assemblage of neurons that are connected to each other.


title: Neuroscience

text: The vertebrate nervous system can be split into two parts: the central nervous system (defined as the brain and spinal cord), and the peripheral nervous system. In many species — including all vertebrates — the nervous system is the most complex organ system in the body, with most of the complexity residing in the brain. The human brain alone contains around one hundred billion neurons and one hundred trillion synapses; it consists of thousands of distinguishable substructures, connected to each other in synaptic networks whose intricacies have only begun to be unraveled. At least one out of three of the approximately 20,000 genes belonging to the human genome is expressed mainly in the brain.


title: Neuroscience

text: Due to the high degree of plasticity of the human brain, the structure of its synapses and their resulting functions change throughout life.


title: Neuroscience

text: Making sense of the nervous system's dynamic complexity is a formidable research challenge. Ultimately, neuroscientists would like to understand every aspect of the nervous system, including how it works, how it develops, how it malfunctions, and how it can be altered or repaired. Analysis of the nervous system is therefore performed at multiple levels, ranging from the molecular and cellular levels to the systems and cognitive levels. The specific topics that form the main focus of research change over time, driven by an ever-expanding base of knowledge and the availability of increasingly sophisticated technical methods. Improvements in technology have been the primary drivers of progress. Developments in electron microscopy, computer science, electronics, functional neuroimaging, and genetics and genomics have all been major drivers of progress.


title: Neuroscience

text: Perhaps one of the main unsolved problems in modern neuroscience is the so-called "cell types" problem which refers to the categorization, definition, and identification of all neuronal/astrocytic cell types in an organism. Usually, this refers to the mouse brain since an understanding of the mouse brain is seen as a stepping stone to understand the human. Modern advances in the classification of neuronal cells have been enabled by electrophysiological recording, single-cell genetic sequencing, and high-quality microscopy, which have been recently combined into a single method pipeline called Patch-seq in which all 3 methods are simultaneously applied using miniature tools. The efficiency of this method and the large amounts of data that is generated allowed researchers to make some general conclusions about cell types; for example that the human and mouse brain have different versions of fundamentally the same cell types.


title: Neuroscience

text: Basic questions addressed in molecular neuroscience include the mechanisms by which neurons express and respond to molecular signals and how axons form complex connectivity patterns. At this level, tools from molecular biology and genetics are used to understand how neurons develop and how genetic changes affect biological functions. The morphology, molecular identity, and physiological characteristics of neurons and how they relate to different types of behavior are also of considerable interest.


title: Neuroscience

text: Questions addressed in cellular neuroscience include the mechanisms of how neurons process signals physiologically and electrochemically. These questions include how signals are processed by neurites and somas and how neurotransmitters and electrical signals are used to process information in a neuron. Neurites are thin extensions from a neuronal cell body, consisting of dendrites (specialized to receive synaptic inputs from other neurons) and axons (specialized to conduct nerve impulses called action potentials). Somas are the cell bodies of the neurons and contain the nucleus.


title: Neuroscience

text: Another major area of cellular neuroscience is the investigation of the development of the nervous system. Questions include the patterning and regionalization of the nervous system, axonal and dendritic development, trophic interactions, synapse formation and the implication of fractones in neural stem cells, differentiation of neurons and glia (neurogenesis and gliogenesis), and neuronal migration.


title: Neuroscience

text: Computational neurogenetic modeling is concerned with the development of dynamic neuronal models for modeling brain functions with respect to genes and dynamic interactions between genes.


title: Neuroscience

text: Questions in systems neuroscience include how neural circuits are formed and used anatomically and physiologically to produce functions such as reflexes, multisensory integration, motor coordination, circadian rhythms, emotional responses, learning, and memory. In other words, they address how these neural circuits function in large-scale brain networks, and the mechanisms through which behaviors are generated. For example, systems level analysis addresses questions concerning specific sensory and motor modalities: how does vision work? How do songbirds learn new songs and bats localize with ultrasound? How does the somatosensory system process tactile information? The related fields of neuroethology and neuropsychology address the question of how neural substrates underlie specific animal and human behaviors. Neuroendocrinology and psychoneuroimmunology examine interactions between the nervous system and the endocrine and immune systems, respectively. Despite many advancements, the way that networks of neurons perform complex cognitive processes and behaviors is still poorly understood.


title: Neuroscience

text: Cognitive neuroscience addresses the questions of how psychological functions are produced by neural circuitry. The emergence of powerful new measurement techniques such as neuroimaging (e.g., fMRI, PET, SPECT), EEG, MEG, electrophysiology, optogenetics and human genetic analysis combined with sophisticated experimental techniques from cognitive psychology allows neuroscientists and psychologists to address abstract questions such as how cognition and emotion are mapped to specific neural substrates. Although many studies still hold a reductionist stance looking for the neurobiological basis of cognitive phenomena, recent research shows that there is an interesting interplay between neuroscientific findings and conceptual research, soliciting and integrating both perspectives. For example, neuroscience research on empathy solicited an interesting interdisciplinary debate involving philosophy, psychology and psychopathology. Moreover, the neuroscientific identification of multiple memory systems related to different brain areas has challenged the idea of memory as a literal reproduction of the past, supporting a view of memory as a generative, constructive and dynamic process.


title: Neuroscience

text: Neuroscience is also allied with the social and behavioral sciences, as well as with nascent interdisciplinary fields. Examples of such alliances include neuroeconomics, decision theory, social neuroscience, and neuromarketing to address complex questions about interactions of the brain with its environment. A study into consumer responses for example uses EEG to investigate neural correlates associated with narrative transportation into stories about energy efficiency.


title: Neuroscience

text: Questions in computational neuroscience can span a wide range of levels of traditional analysis, such as development, structure, and cognitive functions of the brain. Research in this field utilizes mathematical models, theoretical analysis, and computer simulation to describe and verify biologically plausible neurons and nervous systems. For example, biological neuron models are mathematical descriptions of spiking neurons which can be used to describe both the behavior of single neurons as well as the dynamics of neural networks. Computational neuroscience is often referred to as theoretical neuroscience.