English architect and polymath Robert Hooke was the first to build the Gregorian telescope invented by which Scottish mathematician?
de50a348620eaf1b89844ecc7332147f
Gregorian telescope The Gregorian telescope is a type of reflecting telescope designed by Scottish mathematician and astronomer James Gregory in the 17th century, and first built in 1673 by Robert Hooke. James Gregory was a contemporary of Isaac Newton, both often worked simultaneously on similar projects. Gregory's design was published in 1663 and pre-dates the first practical reflecting telescope, the Newtonian telescope, built by Sir Isaac Newton in 1668. However, Gregory's design was only a theoretical description and he never actually constructed the telescope. It was not successfully built until five years after Newton's first reflecting telescope.
000458e1c6161fea0cbc9191b87546a3
Robert Hooke Robert Hooke FRS ( ; 28 July [O.S. 18 July] 1635  – 3 March 1703) was an English natural philosopher, architect and polymath.
da2d6e2e4f6dc89ac777de303a052716
Richard Dunthorne Richard Dunthorne (1711 – 3 March 1775) was an English astronomer and surveyor, who worked in Cambridge as astronomical and scientific assistant to Roger Long (master of Pembroke Hall and Lowndean Professor of Astronomy and Geometry), and also concurrently for many years as surveyor to the Bedford Level Corporation.
e46365f91e5ed1c4ffb3d50aef5625ef
Conical pendulum A conical pendulum consists of a weight (or bob) fixed on the end of a string or rod suspended from a pivot. Its construction is similar to an ordinary pendulum; however, instead of swinging back and forth, the bob of a conical pendulum moves at a constant speed in a circle with the string (or rod) tracing out a cone. The conical pendulum was first studied by the English scientist Robert Hooke around 1660 as a model for the orbital motion of planets. In 1673 Dutch scientist Christiaan Huygens calculated its period, using his new concept of centrifugal force in his book "Horologium Oscillatorium". Later it was used as the timekeeping element in a few mechanical clocks and other clockwork timing devices.
13cacbeee4bbea55202ef5f2ddcbce07
Andrew Gray (physicist) Dr Andrew Gray {'1': ", '2': ", '3': 'FRS FRSE', '4': "} (2 July 1847 – 10 October 1925) was a Scottish physicist and mathematician.
fd05117d767a7b0a30fef933ecc3c463
James Thomson (mathematician) James Thomson (13 November 1786 – 12 January 1849) was an Irish mathematician, notable for his role in the formation of the thermodynamics school at Glasgow University. He was father of the engineer and physicist James Thomson and the physicist William Thomson, Lord Kelvin,
6833c01851e9f796eaabbb248a7f05aa
Robert Gordon of Straloch Robert Gordon of Straloch (14 September 1580 – 18 August 1661) was a Scottish cartographer, noted as a poet, mathematician, antiquary, and geographer, and for his collection of music for the lute.
0fbdb7a4dd85224fb3d17f290ddd6168
Robert Lugar Robert Lugar (1773 – 23 June 1855), was an English architect and engineer in the Industrial Revolution.
d98f64ba7115de6d74e8a51b13d12836
William Lax William Lax {'1': ", '2': ", '3': 'FRS', '4': "} (1761 – 29 October 1836) was an English astronomer and mathematician who served as Lowndean Professor of Astronomy and Geometry at the University of Cambridge for 41 years.
c2156a755237298265e807fb7a4745b3
King's Observatory The King's Observatory (called for many years the Kew Observatory) is a Grade I listed building in Richmond, London. Now a private dwelling, it formerly housed an astronomical and terrestrial magnetic observatory founded by King George III. The architect was Sir William Chambers; his design of the King's Observatory influenced the architecture of two Irish observatories  – Armagh Observatory and Dunsink Observatory near Dublin.
45162264b6000e0e398fb24b29a38aed
John Couch Adams John Couch Adams FRS (5 June 1819 – 21 January 1892) was a British mathematician and astronomer.
9024d16e42dc2a93b31b829674dede41
Gottfried Kirch Gottfried Kirch (Kirche, Kirkius) (December 18, 1639 – July 25, 1710) was a German astronomer and the first 'Astronomer Royal' in Berlin and, as such, director of the nascent Berlin Observatory.
afc51f66a759db8e1f40c2efc841f745
Richard Laughton Richard Laughton (1670?–1723) was an English churchman and academic, now known as a natural philosopher and populariser of the ideas of Isaac Newton.
d2c4398304839d73caa0722ef06559b1
Graphic telescope The graphic telescope is a type of camera lucida that has the power of a telescope. It was invented by Cornelius Varley in 1811.
73c1ec4d416172e57f5279bba745996a
Hermann Brück Hermann Alexander Brück CBE FRSE (15 August 1905 in Berlin, Germany – 4 March 2000 in Penicuik, Scotland) was a German-born astronomer who spent the great portion of his career in the United Kingdom.
5072aec0fad342abc7e6e493970be2c7
Thomas Romney Robinson The Rev. John Thomas Romney Robinson FRAS (23 April 1792 – 28 February 1882), usually referred to as Thomas Romney Robinson, was a 19th-century astronomer and physicist. He was the longtime director of the Armagh Astronomical Observatory, one of the chief astronomical observatories in the UK of its time.
bf5a92bb924fab2da6381cf951280f64
John Beverley Oke John Beverley Oke (23 March 1928 – 2 March 2004) was an astronomer and professor of astronomy at Caltech. He worked in astronomical photometry and spectroscopy and is well known for creating instruments for the detection and measurement of cosmic phenomena. His instruments were used on the 200 in Hale telescope at Mt. Palomar, California and the Keck telescope on Mauna Kea, Hawaii. “He was one of the first really serious and really excellent astronomer-instrumentalists,” says James E. Gunn, Eugene Higgins Professor of Astronomy at Princeton University Observatory, “and he and the instruments he designed and built were very largely responsible for keeping Palomar and the 200-inch telescope so far ahead of the rest of the world during the 1960s, 1970s, and 1980s.”
26bab2b9439badf04b8f9ae444b041c3
Observatory Naef Épendes Observatory Robert A. Naef (French: Observatoire Robert-A. Naef ) is an astronomical observatory located at Épendes, Canton of Fribourg, Switzerland at 7.13938 degrees east of Greenwich and 46.7326 degrees north latitude. Its parallax constants are : ρ sin φ' = 0.68632 (Earth radii from the rotation axis) and ρ cos φ' = +0.72501 (Earth radii from the equatorial plane).
bb0a07bb48a67d50d890e0d7bb27cb37
Equation clock An equation clock is a mechanical clock which includes a mechanism that simulates the equation of time, so that the user can read or calculate solar time, as would be shown by a sundial. The first accurate clocks, controlled by pendulums, were patented by Christiaan Huyghens in 1657. For the next few decades, people were still accustomed to using sundials, and wanted to be able to use clocks to find solar time. Equation clocks were invented to fill this need.
d991f86ea1bfd8370ccbc12b66ee68c7
C.C.L. Gregory Christopher Clive Langton Gregory (13 May 1892 – 24 November 1964) was a British astronomer, who established the University of London Observatory.
519bb3ccd455734c2e52545f8317bec5
Lawrence Rooke Lawrence Rooke (also Laurence) (1622–26 June 1662) was an English astronomer and mathematician. He was also one of the founders of the Royal Society, although he died as it was being formally constituted.
88a0e7d155dc0c0e5c35ea79339b1698
Rectangulus The rectangulus was an astronomical instrument made by Richard of Wallingford around 1326. Dissatisfied with the limitations of existing astrolabes, Richard developed the rectangulus as an instrument for spherical trigonometry and to measure the angles between planets and other astronomical bodies. This was one of a number of instruments he created, including the "Albion", a form of equatorium, and a famously complicated and expensive horologium (astronomical clock).