We can sometimes get completely overhormed. The story of the hummingbird is about this huge forest being consumed by a fire. All the animals in the forest come out and they are transfixed, burning, and they feel very overhormed, very powerless to this little hummingbird. It says, I'm going to do something about the fire. So it flies to the nearest stream, takes a drop of water. It puts it on the fire and goes up and down, up and down, up and down. All the other animals, much bigger animals like the elephant with a big trunk could bring much more water. They are standing there helpless and they are saying to the hummingbird, what do you think you can do?  And your beak is small, you can only bring a small drop of water at a time, but as they continue to discourage it, it turns to them without wasting any time and tells them that to me is what we should always feel like a hummingbird. I may feel insignificant, but I certainly don't want to be like the animals watching as the planet goes down the drain. I will be a hummingbird, I will do the best. Hello friends, my name is Ashok, I am from Ayukha. Ayukha is inter-university center for astronomy and astrophysics, which is located inside Puna University campus. And we have their small children's science center. And what we do, we invite children, teachers, parents from nearby Pune and we conduct three hour workshop with them. And what your material we are using over there, most of the 99% is that waste material like the bottles, like the old refills, old slipper chapl, balloons, pencils, this kind of the material we use over there. And with that material we design more than 800 different kinds of the simple ties and the science experiment. So out of that I would like to show you some of them. And most of the thing is documented in the form of the books, in the form of the films or in the form of the photograph. So let me start with a very simple experiment. Suppose if you have actually straw, now straw is commonly available material and this is very nice material. This is very dangerous for the environment, for our purpose this is very nice material because it is commonly available. So we design more than two dozen activities just with straws. Now just I am showing three, four activities just with straw. Suppose if you have the straw, you just cut this straw into two pieces. One is small, other is big one. And what I am doing with this bigger one, you have to flatten it. Just flatten it with one end and you need two small cuts. One small cut like this and you need one more cut from the other side. Make the straw like a sharpened pencil. And then from this way you can see there is two ends over here, two ends.  And then you have to blow very very hard. So this is simple flute you can make just with the straw. Now children always ask the question, I can make sound this way. Can I make sound from other way around? Kya lagte bachu apko? No, sabi ko ye lagte ekit nahi huga. I am blowing from here. So you will get the sound. But I am sucking from other way around now. This is my two-way flute. And you can make this two-way flute just with help of this straw. Or abhi apdhansi dekhenge to yaha kya ho raya?  And you just observe over here. What is happening? And that vibrations is very very essential for getting the sound. Actually base of the sound is vibrations. And you can learn that vibration just play-way method. And straw is ordinary material which you can find anywhere. Now, suppose if you have this straw, you just make few holes over here. You know that normal flute has six holes over here. And this is the seventh hole. This natural hole is seventh hole because our Indian music depend upon the saptasur. So we need total seven holes. Six holes over here. And this will be the last ten seventh hole. So what I am doing here, just I am making now just two holes. One hole over here. You see there. And you need one more hole over here. Now this straw has three holes. First, second. And this is the natural one, third hole. So if I close both the holes, see what's happened now. You will get this kind of the sound. But while blowing, I will open other holes. You got the idea? Sir, you will get the different kinds of the pitches. So you can easily create different kinds of the pitches by cutting the straw. Now, bhenjaya gapna itna easy flute. Kuch nahi chahi aapko ek straw chahiye. Or you can make very, very nice flute just with straw. Abhi dike isko jada hole biker sakte. He lamba rak sakte. Chhota rak sakte. You can modify. And yaha ye cut nahi lagay toh kya hojayaega. Bacha bohot kushan push teki. Iska kya purpose hai? Nahi lagay toh kya hojayaega. Abhi try karke dekhon. But if you make the two cuts, you can see the vibrations very clearly. Or vibration me easy hojata hai. Kave kave bacha hamesha liwch jo hote na liwch kabhi isa flute banate. Lekin wuz time wo cut nahi karte yaha. Yaha me na cut kyo kia easy hote ae blokane ke liye. That's why. So ye straw se isa ek flute ban sakta hai. Abhi dike now I have two straws. Abhi dike farak itna hai ek lamba aur ek chhota. Straw is same only difference in inner diameter. Abhi dike iska kya huraya? Abhi maise wehi cut. Two cuts over here. Aur ye chhote se bhi wehi cuts. Basically it's two straws only difference in length. Abhi dike pitch. Pitch ek mutlo of loudness of the sound. Kaisa cat type kya sound hai. It is called as a pitch. Abhi dike ye maika karunga isse. If I use this bigger one. You just remember this pitch. And if I use the smaller one. Kwanse bada hai? Ye hai ye hai? High pitch kwanse laga apko? Kitne logon ka lagta hai ki ye chhota jo straw hai high pitch hai. Aur ye kitne logon ka lagta hai ki ye high pitch hai. So you are correct. Ye high pitch hai. Jitna chhota straw utna high pitch. Abhi dike. Aur wehi. Means energy semi blocker round. Means itse jor say. Itse chota isa kocha nahi. Same energy semi blocker round. Here you will get the high pitch. And here you will get the low pitch. So easily you will get the idea. Here the pitch mainly depend upon the number of vibrations. Per second that is the frequency. And of course the length of the vibrating air column. With help of the straw. So you can learn very simple things. Now you never forget this experiment in your life. While blowing I will make this straw shorter and more shorter and more shorter. I will change the length of the straw. Abhi dike subse lamba. Or karte karte dike nasdika na imoji. Basically I am changing the length. Reducing the length. So ek straw. So ek straw meh sabi surongka darshan. Sabta surongka darshan hojai ga. Abhi dike bachya humesha jada koshish. Aur nasdik. Aur nasdik. Badne yahatak ate. Kaha tak? Yahatak. To jara koshish. Bata bata. Trosa practice kardo. Badne kato. Ne to nasdik. Dek na hi sakte ham. Dur dek sakte isu zara. Jitna hi nasdik. Ab dek na hi sakte. To zara thosa sambalke kardo. Likin you can learn the sound. Vibrations ka hote. Peach kiske ufer depend hote. Fruits simple ham kaisi bana sakte hain. To ye sabi ek chote se straw se hosakte hain. Abhi dike meh kya ek aur ek sound nikaltav. Yos sabi bachyo ne. Aur hamne sabi bade logo ne kia hain. Bashpan meh. Sound of the baby. Baby crying. Hain? Abka jana pahesha na wala sounde bilkul ye. Sabi ne humne bana hain bachpan meh. So ye actually that, for that sound, you need the smaller straw. Kyuki bachya humesha high peach meh rote hain. Bade ho ka peach alag hota. Likin bachyo ka chote bachya humesha high peach hota hain. So high peach bana ne keliye you need smaller straw. And basically I am changing the vibrating ear column. Straw ke lamba hi matlab. Aisa kia to lamba ho jayega chota ho jayega. Lamba ho jayega chota. Basically ear column jo hain. Abhi badal raho hi say. So ye straw se kya kya hosakta hain. Uski ek jelki. Baat me, aise bapu simple simple experiments hain. Abhi ye apne shahit bashpan meh khela ho ga iske saath. This is a bottle cap. If you have the metal that bottle cap, that will always better. Abhi mere pasik plastika bottle cap hain. Aur ye ek rubber band laga diya. This is my rubber band. Aur ye kya hain? Abhi dikhia yaha. Shirt ka batan hain. Rubber band ko kato. Baat me wo jo hole hota hain. Shirt ka batan ko. Usme view kardo. Aur yaha not laga do. Ye not ho gai. Aur yaha, dosre hole me kya karna hain? Opposite hole me ek thread lagana hain. Sabas ye thread ho gaya bhi. Aur iske upar chote chote naches hain. Chote chote naches hain. Naches. Abhi ye, nalikse dek sakte ki yaha naches hain. Abhi mai kya karunga? Ye aisa hatne pakurunga aur nichikhi chunga.  Wo batan ko. Aur dikhia wo boot aksha sound paida karega. Very close to my microphone. Abhi slow motion me dikhia. Abhi dikhia.  Batan ko dikhia. To kitna, wo ye boot olda. This is very old Indian traditional toy. Haan bashpan se khelde thi. Aur abhi to itne market meh aisa fancy toys aaga he na. Chinese toys. Ki thodi derkhe lo baad me toot jayata fake do. I mean, waste of money. Abhi iske me bachyo me kitne creativity hai ke metal ka cap ho jayga. Bada cap ho to kya ho sakta hai. Do, do, ye thread ho norts hain. Dono me distance kitna ho na chayye. Nort ka size kya ho na chayye. Aur kitne motor skill bhi develop ho jayate ki abhi rubber band katna. Wo chote se hole se view karna. Baad me nort lagana. Achitra se nort lagana. Ye isme bachye bohut sik sakte hain. Lekit ye old hain. Aur isme peach ho gare abhseka sakte hain rubber band ka tension ho gare. Bohut sikne me isme bohut hain. Aur kaas to kuch nahi. Khali we need to find the bottle cap. Abhi ye dikhe. Ye ek bohut majeka experiment hai ye. Abhi mere pasik chota sa nut hain. E hex nut hain. Bicycle ka putai wo bhi chalega. Kaunsa bik chota sa nut. Hex nut. Aur ye to apne pahechana ho gaa. Ye balloon hain. Abhi ye balloon me jayega. Ye mere nut. Okay. Aur kabhi kabhi balloon put jata hain. To abhi don't worry. I have a lot of balloons over there. Abhi isme jada se jada pulata ho main. Kiki jitna tension iske upar ho gana. Utnawa chakam karega. Abhi shayi itna sufficient hain. Aur iske andar nut hain. Abhi dikhe me kya karau. Ye ek ungli niche. Ye ek upar. Abhi. Mai microphone ke nazikpa karega ho. Wilkul apna motor cycle pinjre me hoti e circus me na. That kind of the experiment you can learn. Now nut is my motor cycle. And this is my cage. Aur gao me kya hota mela. Mele me harbade mele me that very famous game. That is called as a Mautkakuwa. Whale of death. Aur ye wusme motor cycle gumate kabhi kabhi kar bhi gumate hain. Aur circus me to hota hain. Abhi gravity se sbse niche hain. Bad me jab mai gumauunga to center se door jayaega. Centrifugal force kya hota hain. Centrifugal force kya hota hain. Gravity kya hota hain. Abhi gravity hei se sbse niche jada. Abhi jab mai gumauunga to door jayaega. Ap speed bhi badal sakte uska. Yek ke wajase do nut dal do. Kabhi kabhi Mautkakuwa me hoti e. Do the motor cycle hoti e. Circus me jo cage hota hain. Wusme do the motor cycle hoti e. So bilkul apko yeh pata chalega ke kya ho raya. Abhi vibration payda ho raya. Why I am using the nut instead of that nut if I use the coin. That regular that circular coin then what will happen. Abhi isme to friction payda ho raya. To bo jaldi rukhra hain. Coin me lagbak ek nit chalte hain. Coin hota lagbak ek nit chalte hain. Kyuki friction wusme come and compare it to this kind of nut. Ye bohut kusik sakte hain. Khali balloon aur chote sen nut se. Aur ye commonly matlab kaha bhi milega. Balloon to commonly available to te. Baccha hamesha balloon ke sati kilthe hain. Aur uske liye ek chota tanda dhunnaiva sato. Ek ready made cheese hai mere pas hain. Ye aapko bohut asandha jayga. Ye ek bird hain. Hame mila. Lekini kuna me ek bohut old lady thi. Abhi unka dehanth hoge la last year me. To uske pas I saw one dozen different kinds of the birds. Mitty ke. Aur wo speciality thi unki. Wo mitty ke. Bohut achi birds banate. Whistling bird. Abhi wo pla. Mere hatme jo hain plastika hain. Abhi if I blow directly then nothing will happen. We will get just one kind of the sound. But if I feel this is water tank. If I feel that tank with water. Then see what's happened. Abhi dike. Ye bird me pani hain. Abhi dike. Yaha se blow krwau me. And actually you can change the pitch. Abhi mai thoda sa tiled krta ushe. Zara level water ka change krta hain. You can change the pitch by changing the water column inside this bird. Abhi kaya whistle hai basically ye. Aur whistle ke. Bahse ito whistle ka original sound apne suna. Aur baat me jab mai blow krwunga. To yaha bubbles feda hojainge. Aur wo bubbles jo hain. Wo vibrating air column jo hota hain. Wo shake krte change krte. And that way I am changing the vibrating air column. Aur ye vibrating air column change ho gaya. To apne dikha last experiment me. Stroko kart diya. To pitch alaga lagata hain. To yehi. Designi unka isai ke pitch alaga lagata hain. So ye readymade hain. Lekin boh interesting hain. Lekin isai mai ne 1 dozen type ke birds dikhe uske gherme. Aur wo khud banati thi. Uske speciality thi. Miti ke. Ye to plastika hai. Lekin wo usle sabi banati thi. Bilkul miti ke thi ho. Abhi thoda say kuch alaga experiment dikhata hain. Stroke hi dikhata hain. Doti hain. I need one volunteer. Can you come over here? Please come. Isi idara hai. Bilkul. Abhi just hold very close to the straw. Aur foda sa jaye wa hain. Beesh meju jagahina wa hajaye. Hold very close to the straw. Aur paka paka na jaa. Pisha aur pisha jaa. I say pull like this. Aur paka. Ye hoge. Abhi dikhye thoda sa aisa kardo. Aisa hain. To apko pata chelega. What kind of the material I am using here. Just straws and the cellotapes. Abhi banana kaisa. Jaminpe kaisa cellotapes prakdo. Juska glue ala isa upa huna chaye. Strict the straws on equal distances. And you need one more tape on the top side. Dikhe niche tape. Glue uska upa hoga. Uske upa straw lagado. And upa jo tape hoga uska glue niche. Basically you have to sandwich straws between two tapes. And that's all. Dono meju gap hewa aisa bankarda. Aisa hadse bankarda. Abhi zara kapakdo. Aur niche khecho. Khecho, khecho, khecho. Abhi dikhye usme kya ho raya. If I provide some energy over here. See what's happened. Ko jaa raya aage. Dikhe kya ho raya. Kya ho raya. You can see the pulse. You can see the energy. Abhi thoda aisa pakdo horizontally. Abhi dikhye. You can see the amplitude now. See the amplitude. Abhi if I hold loose now. See the speed now. Speed of the wave. Bachche hamesha blackboard ke upa kavekave animation film uti. Kuch dekte sunte hae wave. But here physically model se boht acha idea tha hai ki. If I hold loose now. See the speed. Just loose. See the speed. Very slow. Very slow. If I hold tight. Abhi khecho. See the speed now. More speed. So you can change the velocity this way. Abkhila usa itse. Abkhile wilkul. Abhi bachcho kuk izili sumojma jaya. Basically ma yaha energy deyrao. So yeh straw aage nae jata. Basically energy goes from one point to another point. Through this sellotape and the straw. Straw is just medium over here. Wahia hamare wave jho uti hae. Aise aage jaati hae. Yadi pani me ham puch dalta hae. Waves aage jaati hae. Likin pani nae. How to send the energy from one point to another point. Abhi ma kya karunga ise? We say thoda sa twist karunga. Pa isa pakiria. Nasdik pakiria. Thoda sa we change. Can you see this upper part is a crest? Upper part is a crest. Abhi thoda sa. And I am changing now the wavelength. Abhi yaha se yaha crest. Yaha or yaha crest. Distance between two successive crest is wavelength. Distance between two successive trap is also wavelength. This is amplitude. And how to count the frequency? Suppose this wave goes from this point to that point within one second. Or kitne waves cross over. We have say 1, 2, 3, 4, 5 is so much low. 5 is now my frequency. Now for this particular wavelength, I have this much frequency. If I provide more twist, see what's happened. The frequency increase. Thoda sa nasdik pakiria. Straw kopakiria. Thank you. Abhi diki. Now I am changing the. This wavelength. If I increase the frequency, wavelength will reduce. Or wait over. If I reduce the wavelength, frequency will increase. So you can learn very easily just with help of this straw and the cellotape. Abhi diki. Frequency come hoge wavelength. Abhi khiche. Our future tight pakiria. Abhi dike kya hu raya? Kiria. Abhi dike wave? See the wave? Or abhi bachoka sabi bachoka yaha malum hota. Thoda sa the bade bachoka. I hold it like this. Ye kaisa lagraya aapko? Like a DNA structure. Double helix structure hotayana. Woos type ka structure aap straw se banasakte. To matlab straw ka kya kya possible hai? Straw me baut kuch kar sakte hai. Abhi mai aur 2-3 sezi aapko dikhata hu straw se. Thoda sa uske le mojha paani chahye. Abhi dikhe. Tumare saamne banayato aapko big hrme. Kyuki workshop me to hum banayenge. Lekin banana baut easy hai. You need one long stick and one straw. Abhi dikhe aapke saamne. So this is my material now. Extra hai aur ek stick hai. Suppose you don't have the stick, then what you can use? You can use the old refill. You can use the broom stick. You can use the bicycle spoke. Kuch bhi. Ek stick aur ek straw. Now fold this straw into half. Center kaisa locate karoge? So this is my center now. Center of the straw. Or ye center pe needle se ek hole karda. Ye to sharpa nahi se re mahi si se karta hu. Abhi ye isa hole hojayaega. Ye hoge? Aur ye abhi, this is something like a plus sign now. Ye hoge? Abhi mujhe kya karna hai? Ek sezer se lagbak 3 centimeter ek side se. 3 centimeter usre side se. Mujhe dok kat lagana hai. Abhi dikhe, mahi tumare saamne ek kat lagata hu. Ye hoge? Dikhe pura todna nahi. Aur opposite side me bhi same kat. Abhi dikhe. Abko ye bunjayaega? Kya bunga ye? Aeroesa lagre? Triangle bhi bunga ye ha. Aur abko you just tie these 3 things with help of the sellotape. Ek jaga perana chahi nahi. Thread se bhi chalega, sellotape se bhi chalega. Aur baad me abko yo model dikhae padega like this now. E ends jo haena. The ends of the straw should be free. And that is very, very essential. Otherwise, this will not work. Abhi mahi kya karunga? Ye ends free. Abhi pane me aesa rukunga. Aur ye aesa gumaunga. To kya hojayaega? The water will spread. Prinkler zesa banega. Thoda sa mahi aageyata hu. Aur abko dikhaata hu ya. Thoda sa ya niche panikerega. Lekin khusish kartao ki kumse kumge runga. Abhi yaha. Yaha ek baar. Aru ba hi ek baar. Abhi dikhe. Kamera set hoge? Abhi baiti ye. Bilkul baiti ye. Abhi ye mahi jo se gumaunga. Very nice sprinkler. Aru yek baar yaha. Abhi dikhe. Kyuki yaha. Yada kuchkarpetne. Isli mahi yaha karunga. Abhaz isme deep kardo. Raisa guma do. Ready? So you'll get very nice shower in this hot summer. Aur ye banaane ke liye if you have the material, you need just a second. Not even one minute. So bachu kata bhi summer time hai. Chuti hai. Ki aapko itla resource material dekhe jaunga mahi. Ki bas aru material kya to sabi aju baju me hai. And what is the cost of this material? Nothing. Usme to 99% hai ki kaha na ka milega. Dho tin cheeze magneto agri shahit aapko ne milega easily. Isli mahi ne wo laye ham workshop me wo bhi karne wale hai. Lekin maximum material aisa hai ki wo readily available hai. Abhi dosra. Abhi thoda sa imagine kardo. Abhi ye fan mahi ne aapko aisa banae dekhe fan bana diya. Abhi kya hai? Ye bicycle ka spoke hai. Paile material dekho kya hai. This is a half bicycle spoke. And bicycle ka spoke jo uparwala issa hai wa haik fan laga diya. Ab bolange kya fan hai to both easy bana nika tarika hai. Ek strip paper le lo kaun sabi. Isla strip paper ki strip hai basically. And aapko to malo me fan folds kya hote? Ek fold yaha, ek yaha. Ek yaha, ek yaha. Ye aise folds laga do. Bode easy aise folds laga ne. Kuchu isme, ye na dikkat ne. Yuki aise folds laga te jana. And baad me thoda sa stretch karke ek baju me glue laga do. And ye itna loose paper nahi. You have to take that card sheet. Thoda sa strip paper. Hote na greeting card, wedding card, kucha aise hote, magazines ke covers jo hote na. That kind of the paper you need. Glossi ho to boota chapaan isse bhi kuchu ne hujaega feir. And glue laga do. Baad me ye aisa nasdik nasdik nasdik chipka do. Ek aise side me glue laga na. Dono nahi. Aisa chipka neke baad. You just what you have to do hold the two ends of the paper and you finally you will get the fan like this. Glue aise ne baad me chipak jayega ho. Easy aise. To weisa fan yaha hai habi dikhe. Ye fan hai mera. And baad ne kya kia? Yes you need some metal wire. Hoda sa flexible chaya. Papar wire is always best. Uo nahi mila to kumsa bhi chalega leke thoda sa flexible. Yaha ek chota sa aisa loop bana diya aur e loop ko straw hain blokar neke le. Abhi dikhe me aisa yaha blokarta ho. Abis samozlo iske niche paani hain to kya ho jayega? Aur kwen koshishkari gaya? Cholo aapkarega? Aayi yaha. To thoda sa me awar nicha ata ho aur paani chaya muze. Ek mintmai waha ata ho aur ek clean karta ho zara sab karta ho. Aayi yaha. Aur bilkul straw clean hain yaha se aap yaha pakdiye. Haat me kade nahi ho nahi. Aur mai thoda sa height adjust karta ho. Thoda sa height adjust karta ho. Tumpakro yaha. Isme pakro. Aur jor se blokar do. Aur blokarte karte samai ye isme deep kardo. Jor se blokar na. Aur aapkuch nahi hua paani hain. Aur jor. Thoda sa feeling to aagayin aapko. Ye kya ho raha hai? Abhi jara mai akshidra se karta. Abhi dikhe. Abhi dikhe. Ready? Ek hiwara. Naite mujhe shawar miljaya gaya. Abhi dikhe. Bahar thoda sa blokar na. Blokarte karte isme deep karna. Speed aane ke baat. So you'll get very, very nice sprinkler. Aur usme kochi nahi hain aapko. Paani ke experiment bachho kele boht pasandhote hain meisha. Ye ek baat dikha do. Baat me poora bathroom nahi to poora gharwa gya karengi ho. Pasandha gaya. Unka hi experiment hain. Isle unka pasandha gaya. Abhi ek experiment aisa. Kia ki ye sabi bachho ko unki story maalumote hain. And what is that story? Abhi paile experiment bai aapko dikhata hain. Baat me unki story batata ho. Baat khali ek minute ke. Abhi. See the material. Ye kya cheez hai? Bachho pecha no ye? Jara jor se. Kya hai? Kya type of the? Kiska pipe hai matlabhe? Plastika to hai. Likin kaha istimal hota hain? Narelpani pina kele hota hain? Basically bend straw hai. Puch na isme. Bend straw. And ye? Kya hai? Cut the half bottle. Is type ke bottles cut the half bottle. And wo half bottle ka jor abhi lead joh hai usme achar sa hole kardo. Ab bolunge kaisa hole karenge? You just poke the scissor. I.C. scissor lelo. And under daldo. And thoda sa gumado. You will get the circular hole. And scissor ko taper hota hain? So kitna bada cha ye? You just decide. And ye hoge? Iske andar abhi straw. Pakka. Thoda sa kuch bhi loose ho. So you need glue. Abhi mai glue bhi ako dikhata ho. This kind of the glue is always better. Rubber glue. Ye bicycle ka puncture ka solution hota hain. Fuevibond. Ye bohta chak type ka glue hota hain. Seal karne kili. And ye hoge? Abhi mai kya karunga? Ye isme dalunga. Daldiya. Abhi thoda so socho. Yedi mai isme paani bharunga, toh kya hojayaega? Boru na ya apko? What will happen if I fill the water? Paani nicha hajayaega? Aisa lagta ya apko? Kitne logon ko lagta ya paani nicha hajayaega? Yes, it is not sealed. Though both ends is open now. This is also open. And see the other ends is also open. This is regular bent pipe. No seal. No any hole. No any hidden thing. Regular pipe. Isme mai paani bharunga toh kya kya hone ka chance hai? Bubbles aayenge. Cholo. Ek toh hai ki bubbles aayenge. Aor kya hojsakta hai? Straw upar hajayaega? Apne apjayaega upar? Cholo. Straw upar hajayaega? Aor kya hojsakta hai? Paani nicha girega? Straw upar hajayaega? Paani nicha girega? Aor kya hojsakta hai? Paani upar hajayaega? Apne apjayaega? Acha. Wapul raya ki paani upar hajayaega? Cholo. Diki aak fona sa imagine kardo. An baad me apkhelo uske saath kya hojayaega? Apma. Abhi dikhya maa upko bata tava. Iske sath apganto khel sakta yahe. Abhi... Apni mae itna bharata vo. Lagba kithna hojaya? Yaha takho huea. Sistim me dikhya. Abhi yaha takaha pata chelega? Abhi yaha takaha waga paani samojlo. Abhi yaha takaha waga. Adha sa hata jada hoge? Aur abhi mae kya tuarunga? Lagba, lagba, lagba, lagba, lagba, lagba, lagba, lagba, lagba, lagba, lagba, lagba yaha. Ata aya paani niche? Kiyone? Water can't go. Ab deshto, usme kya karna padega mujhe fir? Aor pani varda, chalo. Tumara wo pote, tumara kaum chalo rako. Paani varda jao. Paani varda ho, aor pani varda ho. Abhi diki, mehi pani yata. Thoda sa, aor thoda sa bashti ye. Chola, aor thoda sa varda ho. Diki, bachyo kai meha jina shin diki. Aor thoda sa daal diya. Abhi kya ho gaya? Aor paile ta ita pani tho. To nichi na yata. Abhi kya ho gaya? Abhi kya ho gaya? Abhi thoda socho. Aor kya ho raya mujhe batado? Abhi diki, itna, aumari paas time ne. Kyuki one and a half hour meha hai to show more experiment. Likin meh batatao. Ech chotechi story batatao. Jo sabi bachho ko maalumhe. Abhi ek straw to aapne dekha yaha. Uch hidden hole na kuchne. Ben straw hai. Abhi Srikushna Bhagwan ki story sabi logon ko maalumhe hoti hai. Unka janam jail meho gaya. Barabarhe na? Jail mehi thi na Srikushna Bhagwan. Aor uske maa ka naam kya hai? What is the name of his mother? Devki. What is the name of the father? Aor jail meh payda ho gaya. Rat meh. Barabarhe na. Aor subar, yadi wo jail meh rakte hiya, to kya hota? Kwanse maa maa aake, unko maaar dhalta. To baadne kya kya? Vasudevne ek katori meh. Chotechi katori meh liya. Aor abhi bahar nikalpade. To bahar seh place meh rakna hai, to bish meh ek nadi thi. What is the name of that river? Yamuna. Chola hi to maalumhe. Anywhere cross karna hai. Barish ke dinthe, boot flooding tha. To bhi anyway, thi need to cross that Yamuna. Toa kaha tak gayo? Paani yaha tak aagaya? Yamuna cross kare? Paani yaha tak aagaya? To bhi Yamuna cross kare? Jana yaha aage? Yaha tak aagaya? Yaha tak aagaya? Yaha tak aagaya? Yaha tak aagaya? Aor baadne paani kaha tak paoji gaya? Aor kya ho gaya phir? O dubge? Shri Krishna Bhagwan me dubge. Okay. Ho gaya phir kya? Ha? Na maalumhe story. To podo thoda sa. Ye boot interesting story. Ki log bolte hai. But sabi grandmother apne bachokhe Childan ko batata hai. Ki baadne paani Krishna Bhagwan ke pair ko touch ho gaya. To sbse uparthe na katoori ma. To paani pair ko touch ho gaya. Baadne Yamuna drain ho gaya. Abhi deki mere Shri Krishna Bhagwan ka honge. Sbse toppe. Ye khada kaun hai isme Wasvadev. Aor Wasvadev aage hage jaara hai river me. River to aapko maalumhote middle me jada depth hota hai. And side me thoda sa kum kum. Ye to maalumhe aapko. Abhi Wasvadev river me jaara hai. Bhutne tak paani haga ya. Abhi deki kamaar tak paani haga ya. Lag bak kandhe tak paani haga ya. Nek tak paani haga ya. Abhi belkul khali Upar seer bachaya hai. Baaki sabi paani me hai abhi. Upar seer bachaya hai. Baaki sabi paani me hai abhi. Aor uske sbse toppe Shri Krishna Bhagwan hain. Abhi aak tak paani haga ya. Thoda sa hisa seer ka bachaya hain. And last me Shri Krishna Bhagwan ko joha pair niche tha waha touch ho gaya paani and Yamuna drain ho ne lagi. Thank you. And drain isi ho gaya ki puri drain ho gaya. Abhi Yamuna me paani ne bachaya. Rasta milgaya firu nko. Jaanaik liye. Anden hi cross that river. Anden hi plus jaanaik liye. Isme kya maji ki chiza? Kya kya ho raha hai? Forget about that story. Story jorda. Lekin isme kya ho raha hai? Kilpiyum jab tak ya hatak me paani bharta tatak kuchne hua. Lekin ya isi kya chiza ho gaya ki wo? Ya ha wo limit cross kia to paani shiru ho gaya. Aor iska to kuch lende na hi nahi. This is a ye to bahari hai. Iska kuch hi nahi lende nista experiment se. Abhi bachaya baatne sozte kya raha hai. Ye to free end hai na jab me isme paani dalunga to usme bhi jaega. Aor jaega. Aor jaega. Aor jaega isse side se. Aor kaha tak jaega? Ye hatak. Jitna paani aayega utne hawa expel ho gaya. Utne bahar jaegi. Utne bahar jaegi. Abhi sub top top jo isse hai woha paani aageya. To top ya bhi paani aageya. Matlab, nitu to jaega igravity se. Ar yek bar saifan action shiru ho gaya haa. To pura khali hu jaega hi. Paise saifan manaya maine. Pura isse side ka hawa nikal diya. Saifan manga kiri ye. Very easy experiment with help of the this bottle top and straw. Paise story bhi jodh sakte hain or experiment bhi kar sakte hain. Abhi aor ek experiment mahi aapko batunga. Paide mahi aapko batata hao ki ye wicket lenewala experiment hain. Wicket lenewala. Matlab gallat aap sochenge. Isle gallat answer aajega. Abhi dikhe. Ye to dono me pura paani hain. Pura paani hain. Ar isme dikhe. Me kholke bi dikhaata. Kuch hidden nein. Isme pura paani bhar diya hain. Ar ek chota sa straw andar hain. Ar bahar ye straw hain. Ar waisa hi usme kya hain. Waisa hi isme andar jo straw gaye na wo to semi hain. Ye straw semi hain. Dekin ye bahar only difference in that length. Abhi thoda sa sochenge hain. Abhi mahi ek heitpe isse pakartao dono bhi. Ek heitpe hain. Now my question is do bottle having the same volume. Straw ka inner diameter is also same. Only difference in length of that straw. Ar andar jo dono straw hain that is also same. Jo only yeha bahar jo hain uski lambaime farak hain. Abhi question is na ek heitpe ye mahi isme ulta karunga. Upton karunga. Ta kumse bottle ka paani jaldi khatam hojayaega. This is my question. No, no, no. This is not complete now. I am giving you the option also. This bottle will finish first. This bottle will finish first. Both will finish at the same time. Or fourth option is paani hi nahinichayaega. Abhi bolo kitne bachyoko logon ko lagta hai ki ye bottle paili khatam hojayaenge. Ek ek hi umli upar nahi chalo. Kitne bachyoko lagta hai ki ye bottle jaldi khatam hojayaenge. Abhi boht umli upar hai abhi. Kitne logon ko lagta hai ki doona ek bottle ka paani ek saath khatam hojayaenge. Ye bhi nahi. Or kitne bachyoko lagta hai ki paani hi nahinichayaega. Aur isme kum. Abhi dikiye apka answer jo hain na you'll get answer with pre-experiment. Ready? Kya kya ho raha hai dikiye? Aur apka answer apka sochke mujhe batado ki sayiya gallat hai. One, two, three. Aur dabana na ek kocha nahi. Dahan se dikiye kya kya ho raha hai abhi. Abhi apka answer change nahi karna hai wahi rakhdo. Parke mat batalo. Aur ye sochne kele apko itna majur katega na kya isa ho raha hai. Aur ye, dikhe, e empty ho gaya aur isme lagbaka aadha paani hai. 40% ho hi. Kya ho gaya isme? Aur boht logon ka kya tha? Ye hi answer tha? Ye jaldi khatam hojayaenge. Aur apojit ho gaya. Matap, jabtap kama experiment nahi karengen uske saath nahi kherengen. Taptap hum gallat sochte hai. Wo sochna sayi ya gallat hai. Wo tohoda experiment karke dekona. Ye toh boht easy hai. Abhi bata toh mujhe ye kyo jaldi khatam ho gaya? Aur wo kyu nahi? Apko kicha hai? Dimaf me? Abhagboldo boldo. No, no, but the space is actually same because height of the bottle is always same. But if you count the volume inside the slide very small. This is a, just you tried good. But thing is now here so this is the outlet of this pipe. Okay? So matap, paani yaha se niche aarengen. Aur ye case me kya ho raha hai? Paani yaha se aarengen niche. To ye point se kitna height ka paani upar hai. Jaha se outlet hai waha se. Aur dosra yaha jo outlet hai isse upar kitna height ka paani hai. In your volume of the water is same. Me na ye dono bottle same ili isli liye. So abhi the pressure of the water does not depend upon the amount of the water. Only depend upon the height. That other people know the formula P equal to Rhoji H. Isme kya hai? Yaha outlet hai? Itne height. Waha kya hai? Heit kum hai. So jitna height jada utna pressure jada. Isli liye wo bo jeldi khatam ho jaata hai. Aur wo ne. Aur jabta ke bachokho formulae maalumhote sabi maalumhote liki na actually kaha implement karna hai. Ye ne maalumhote kyi sabi wo memorize hai. To puche palli ne patata hai. Abhi ye abhi po na me iser hai. Abhi yaha IIT zesa place. Aur humne bhi. Matlab jitne teacher ko dikha diya. Jitne professor ko dikha diya. Jitne student ko dikha diya. Yehi answer ki yehi bottle jeldi khatam ho jaegi. Aur yehi nahi. Matlab 99% time isa hota hai ke gallat answer milta hai. Aur baadne bata ne keba ahre itne easy tha kya. Humne socha hi gallat. Abhi dike aur ek maje ka experiment dikha tha ho. Ek mujhe volunteer kya ye. A double jeldi aegi. Jeldi aegi. Abhi aapa isa kardo yeh balloon fulado yeh ap aur ap yeh fulado jor laga ke jor laga ke aur balloon fulano ku reata jor laga do. Aur acha balloon hei. Matlab puchi fata hoa nahi hai. Chola bhi yeh yaha tako gaya. Great. Yaha to fuladia. Abhi maise kya kwa luj krata hoa. Acha twa twa twa luj daba dava ke. Hoge, nahi hoge. Twa twa ruko, ruko. Abhi yeh mera balloon hain. Ordinari balloon hain. Abhi maise kya karunga dikha. Mera experiment kya hain abhi. Yeh to apne dekha. Yeh bottle hain. Twa twa hard plastic laelo. Good quality bottle. Kabikabai aise bottle hote ke bohti yeh plastic patla hote. Take the good quality bottle. And dikha bottle itne waste krte hain. Itne waste krte hain. Mai apko ek ekhzampal bata tha hoon. There is a very nice film on the story of bottled water. Annually not ke ek film hain. Netpe boh famous IF film. Story of bottled water. Ewe, yeh country, yeh khapte me kitne bottles use krte hain yeh plastic ke. To usme bilkul bata diya. Yadi hum ek bottle ke baad dusri bottle aise rakhenge. Tisri bottle aise rakhenge. So yeh khapte me America kitna bottle use krte hain. Itne bottles hote hain kure earth ko ek ring aata hai uska. Ek ring banjayegi, kure earth ko. So matlab, yeh country itna waste krte hain to baaki to hum di kitne waste krte hain. So kya hain, matlab, kitna environment kele danger hain. Chon usle, humne lagbaksaw we design more than 100 experiment with just bottles. Ar bachu kele kamaan le matlab kaha bhi milta yeh rastemi yaha se ek 2 kilometer kwaunse bhi side se jaye. So slow ek bottle rastemi miling yeh apto. So abi yeh jo mera balloon hain abhi dike yeh balloon usmemi mahi dalta hoon bottle me dal diya. Ar achha balloon tha yeh kuchi ting mehi mahi yaha raktha hoon aur yeh jo hain mera balloon yeh dike uske upar balloon bitha ria. Okay. Abhi mahi apko ek request krta hoon yaha jaze apne balloon fula hai tha na pehle abhi fula do. Hava dal do, usme kushish krta hoon. Yaha se jor se kaisde bhi nai fula yeh. Abhi dikha do zara fudasa isa fudre ya nai fudre hain. Yaha nai fulre hain. Yaha apko raktha hain nai nai kisi ko raktha fulega dikha fulre yaha tak Hava jare hain. Abhi yaha se mahi ne kushish ki bata bhi bachul kushish ki kava jare hain yeh mujhe abhi dike dusra kushen kya hain isme mujhe hawa dalna to hain lakin without touching to the actual balloon. Bata bhi yaha ka mujhe fukna nai hain. To mahi kya kar sakta hoon? Balloon ko fula na hain without touching to that balloon. Paib se kya karna hain? Paib se blow karna hain. Blow karna hain sak karna hain. Sak karna So sak karne kebadi yaha isme yaha hawa jaygi aisa laktha ya apko karu sak fir chalo karata hoon Abhi dike aisa raktha hoon yaha bhi dike sakta hain. And yeh magic legega apko Balloon ka muho open ar uske andre hawa. Aisa kabhi hota hain kya? Mahuti is open now ar itne hawa yaha andre. Itne hawa yaha andre. Kya hoge? Patacharan apko? Kya hoge? Pressure in the bottle. Chalo abhi usme hain Paani bharenge. Awa isera. Isme thoda sa paani. Chalo isse apko bharna muskel hain. So yeh mahi apko deta hoon. Abhi slow karke karke thoda sa slowly isme paani bharda hoon. And yeh joh hain mahi isa pakarta hoon usme paani bharna apko. Bharda hoon. Thoda slowly slowly. Ek neta mahi aare koshish karta hoon. Ek neta mahi aare koshish karta hoon. Ek nushishkakarta hoon. Iske aandare extraa dalta hoon. Daldo paani abhi saidme. So yeh jire jayega. Abhi jayega. Abhi daldo. Dalte jaye. Dalte jaye. Dalte jaye. Dalte jaye. Thoda sa nicha hum bucket rekenge. So gila ho jayega jada. Dalte jaye. Dalte jaye. Dalte jaye. Awa dalte jaye. Niche beta magpakdenge. So giringare paani jo nicha giraino usm kele magpakdo. Dalte jaye. Dalte jaye. Bilkul dalte jaye. Cholo. Abhi isme e ladke ni poora paani bherdiya. Cholo thank you. Abhi rakhdo. Jaminkho pa rakhdo. Abhi deke yeh kya hain? Yeh mai apko batatao. Yeh kaaf hain? Yehi bottle ka. And that cap having the small straw. Old refill hoto bhi chelega. And yeh mai iske andar dalta hoon. And yeh dakkan jo haina yeh isa. Pakakartao ya. Pakakatao dakkan. Bilkul pakakartao. Bilkul pakakartao. Chhodda. What will happen?  Kya latatao apko? Cholo. Ready? Abhi ekibara baat bhi naikurunga yeh. Bo time gata isme. Abhi mera ungli. See the fountain. Ardabata nahi kuchne na ya. Apbolengi ke mai dabarao. Kuchne na ya. Khaale halka sapakartao dikhia. You can make very, very nice bottle. Iska fountain banengia. Abhi fountain ke sme. Yedi yaha se blo karega to kya hojayaega. Faas aejayaega. Cholo abhi fata publikme jaake. Apko detao. Jara blo karega yaha jaake. Yaha jaake. Joor se blo karega. Joor se. Aor joor laga do. Aor joor laga do. Bas bas bas bas. Samajma ya kya ho raya? Yeh to magic dish ho gaya. Yeh hawa blo karega. Arbaherpani aare raya. Pani kaha se ta? Yeh sisa ta. Okay. Very nice experiment you can do with this bottle. Thank you by the hand. Abhi ek experiment me apko aisa batunga ki jo ek ladki ne design kia hain. Aor wo uska background me ne ratko bata diya. Yeh logo amko mujhe milet hain. Yeh experiment me apko dikhatao. Aor yeh dikhia experiment kia hain. Pele zara thoda sa jamin table ko upa rakthao. To apko fata chalega yeh. Iska story wot interesting hain ek experiment ka. Ek ladki hain puna me. Uska naam Durga Jetti. Itni gareeb gareeb gareeb gareeb gareeb gareeb The size of her house is 10 by 10 oteen ke rups hain upar bhi rups hain. Aor father is alcoholic. Mother washes dishes in 3-4 houses as a daily wages labor. Aor yeh ladki mahto help krne ke liye chaar ghar me vartan saap krne ke baat skul me jaati. Aor yeh 10 week a era matlab. Aor exam do din aage hain. Tap tak unta kami chal rahain. Aor wo usne log bag yeh aise ek dozen experiment design kia. Aise. Aor uska bhai bhi wehi klasme. Kyu ke ladki isle late wage diya. So donno bhi ekhi klasme 10 klasme. Aor yeh ladki ko wo exam me 10 klaske exam me SSC board ke exam me 94% milge. 94% milge. Aor wo jo unka bhai hain unko bhi 92% milge. Matlab poora saal krne ke baat bhi. Aor itna garki perasite bekar ke wo bolte ke main draad gara wajita ka stariin ekar sati garebe kyu ke father alkoholik hain po pinikik baat halagulla hi gherme. Aor wo soni ke baat stari krne ke time. To wo usne experiment kia hain dikhe wo usne actually parachute ka bottle liya tha.  Aar iske upar fran hain paper kaya wo aar baatne kya kia yeh jo hain yeh iske upar laga diya.  Lekin aaz muja demo milga kya rei, itne easy hai warnana principle. Ta basically warnana principle to hai, high velocity low pressure. Kumisa bhi fluid ka high velocity hota hai, the pressure low hota hai. To jab mahi yaha blow kar rahao, to ye hi high velocity region ban gaya. To yaha low pressure wo ban jayega. To ye to hawa jayegi. Lekin bahar ke hawa add hoke jayegi. Aar ye sikne ke joratne. Humare grand mother ko maalumta. Chula ke upar, jab huma kuking karti, to blow pipe uskartiti funkari. Wo nazdikne pakartiti, humesha dur pakartiti. Jada hawa bejne ke li. To ye gao gao me loge principle use karre pehle se. Shahido principle maalumne hii hai. Tuki nazdikse blow kia, to apne dekhavutne hawa jayegi. Dur se blow kia, to itma hawa jayegi. Ye kya maje ke chi zayegi? Aar ye kha rei hume kya chayegi? Tube chayegi. Thank you very much. Aar isme dekhye. Aar kaun strong hai, subse strong. Chula hawa boongle pehle uthaitha hawa. Chula.  Aavee na? Mai ek experiment karke dikhawunga. Kya naam tumare beda? Di kya mai abi ye side mai uskartia. Di kya mumia isa pakatna. Aar blow karte sama hai? Aisa blow karna. To aap ye istimalkardo. Di kya ye paper ka ek kone bana deha. Aar bolenge ki kya cheese hai? Paper kone hai. Aar foda sama hai bada kone kapko dikhatao. Sabrode baad me gherme jaake kar sakte hain. Ek chota sa paper ka ek aisa piece lelo dikhye. Aar yeh joh he na, sengada nebechne wala karta hai isa isa kone. Aisa kone karna hai aapko bas guma guma ke. Aar baad me ek end sharp ho na chahiye. Aar yeh aisa. Yeh kone banda hai. Aar yeh kone, jit, isme chhoddo, foda sa gumo gere laga ke. To matlapo rewind ne hojaega. Aar jahatak jahega, jahatak samorlo, jahatak loose gaya. To uske baat kart do sezer se. Abhi samrode tumhe, yeh end use karna hai. Aar abhi, mea isa karta ho, samrode ko aisa dita ho, yeh muwe lena, jitna jor laga ke lagana hai to, laga do, lekin blo karna hai. Abhi muwe pura lena. Pura bhi experimenta isa ekina, muwe tumare hatme lelo yeh. Tumare hatme lelo paifi. Pura hatme pakdo, aar yeh andar reke jor se blo karna. Upar, upar. Oh, hawa bahari gahi. Bahawa jata bahari gahi. Chola aar ek baatata ho. Samrode kya karna hai dikhye? Mea aapko isa side se dikhata ho. Yeh johana pura aisa karna. Jor laga ke. Abhi mea, yeh tumare muwe hain. Pura muwe lena. Jor laga ke karna. Oh, thoda sa door gahi. Thoda sa door gahi. Cholo. Aar abhi, jada jor laga ke to, kya ho sakta hain? Yeh johana dikhye. Yeh johana, mea yaha rekunga. Jada jora. Abhi itna door jaye gahi, shayit, dara bahakilok dikhye. Please. Aar aar ek baar dikhye. Aar ek baar dikhye. Aar yeh humeisha boltein ek hamare pas itne missail hain. Hameisha abhi kya jha thoda sa jagda hota hai Pakistan aur Bharat ke baare mein. Hameisha paper mein ataye. Itne range ke missail hain. Itne door jataye hain. Abhi dikhye, samodlo ke mera missail chahi kitna bhi range kaho. Yeh di mea aisa fire koro dikhye. Tuh kya hojayaega? Merei sir ke upar. Tuh matla, fahida na yeh uska. Merei lehi to fahida na yeh. Yeh di mea parlal dalunga, to naas dikhye jahega. Desa samrodinia bhi kia tha. If I hold this missail with 45 degree angle, this is called as angle of projection. To hi wo door jahega. Abhi dikhye, laqba 45 degree mai pakataw. Abhi ready? Sabse last. Aar yeh mea, jha believe me yeh to yeh fit bhar bhi pipe neye. If we have one meter long pipe, one meter long pipe and if we have paper cone like this, you can send this one more than 200 meters. 200 meters. Yeh to chota hai. Aar abhi itne, itne capacity wunke mai apkupatataw. Jara abhi thodaise bade loka enge. Desa samrodinia. Jara abhi thodaise, yeh aisa pakura kiki bachokile ne deta hai. Jara thodaise ranger hai. Yeh aisa pakura. Desa, do, aisa. Abhi yaha hi yeh sir. Isar, isar hi yeh aisa pakurana. Now this is my target. Thoda sa upar kardo. Abhi yeh mere target hai samjo. Aar door se. Abhi door se yaha hain. Abhi shaya the kuhi logo ne marathi cinema deka hoga. Name of that cinema is Walu. Chhe saalpele tha atulukul karneka. Usme there is a bull called Durka. And he, they need to give the injection to that bull. And bull is normal nahi tha. To uspo apna hi karna hai. Injection dena hai. To usne kya karna tha? Kya kya tha? So this is my injection now. Aar yeh mere target hai. Aar iske andar jata hai. Aar abhi aisa thoda aisa kardo. Abhi dikhe mahi yaha se kartho. Andar kitna jata hai dikho. Isse perpendicular kardo thoda sa. Yadi door se. Abhi jata door se nahi kya tha. Abhi jata door se kartho. Aap, 3-4 layer ka paper hai dikhe. Iske andar aisa jata hai dikho. To matla bitne speed se jata hai. To jas, yeh bachu ke saatma matla bahar khelo. Neto mahi klasme kia. Bahala gula hoja kya klasme. To paper ka hai to jada matla. Itna danger nahi. To bhi bo speed se jata hai. To thoda sa danger bhi ho sakta hai. To hawa mahi klo se. Yeh matla bhi air pressure se kya kya ho sakta hai. Aor ek mahi air pressure ka. Abhi dikhe air pressure ka mahi aapka batata ho experiment kya hai. Abhi mahi na kya kia? To mahi saamne kartho. Yeh kya cheese hai? Thodaise hawa usme dalta ho ha. Aur yeh na, Miria bhi balloon, dikhe isa itna chota sa balloon mahi na bana diya hiya. Aor chota ta banata ho. Jab balloon fata hain, to uske baat normally bacha aise karte, khelte uske saat. Chota sa banata hain. Abhi mahi yeh mera balloon hain abhi. Aur hamne, bashpan meh bohot aise khele hain. To normal yeh hone ke baat bas aise apakana. Aor baad meh poad nahi usse. Ta bhi hiya na krunga mahi. Lekin usse chota sa isa hain, to mahi usse kata ho. Aur yeh meri. Abhi chote si baby balloon bangaya. Aur yeh baby balloon jayega. Yeh syrinj ke andar hain. Dike. Iske andar yeh mera baby balloon jaya hain. Dekha apne? Aur abhi mahi yunko andar dalde aise. Lagba gitna andar dalde aise. Aur yeh mera piston hain. Aur abhi thoda sa zara close up lelo, kia abhi iska size dikhe hain. To mahi shayet jamin te dikhe aise koshish karte hain dikhe. Yabhi close system bangaya. Yeh outlet jo hain, yeh banke hain. Aur abhi syr size of the baby balloon na. Chota hoge baata hoge. Aitna chota hoge baata hoge baata hoge baata bhiitwa dikhe sagte. Maithalapia air is compressible. Aur abhi, this is original size. Yeh original ta. Aur yeh chota dikhe, abhi piche letaw aur ahho ek baata hoge. Itna chota hoge baata. Aur abhi, abhi, this is original one. Aur abhi baatne kya karna? Yeh piston nasdik. Aur yeh thhoda size hain, abhi piche kichaw. See the sides of the balloon na. Dike itna lamba. We learn a lot in boils. We all know the equation Pv is equal to constant. But actually it is used. In a small syringe, take a small baby balloon, increase the pressure and the volume will be reduced. Decrease the pressure and the volume will be increased. The pressure multiplied by the volume is equal to constant. It is so easy. And it is for the college level. But if you explain it, you can do it with your children. It is so easy experiment. And I will show you one last experiment. It is so interesting. It requires a little time to turn off the light. The projector will also turn off. Or you can keep it empty for the projector. I will show you another film later. It is a film about how to document all these things. This is a little light. We will turn on the button. If you turn off the light, it will be very good. We will turn off the light a little. We will turn off the light a little. These are the lights. We call them RGB. Red, green, blue. These are the primary colors. These are the LEDs. These are the LEDs. I will keep it here. If you add all these three colors, you will get the white. White is a combination of RGB. And this is the shadow. These are the shadows. And you can see the shadow of any object. I have this thing. You will get the color shadow. Because children always think that shadow is always black. So this is not the shadow. I will request children to come closer to me. You can stand here and look over there. I will extend your hand. Look over there on the screen. If you extend your hand a little, you will get the shadow of this boy. You can do this. You can do this. And how will you make the color of this? You can see that their shadow has changed. You can see that their shadow has changed. This is not your shadow. Look a little back. This is the shadow. And how is the combination of these shadows? Wait a minute. The height is a little higher. Please come here. I will show you that this is the paper. This is the hole. Please come here on the screen. Please come here. A little closer. These are the primary colors. Please come here on the screen. Yellow is the combination of four colors. And this is the addition of blue and green. If you add all three colors at the center. What color is in the center? What is in the center? Please come here. White color is in the center. And how will this color combination be? Please come here. Please come here on the screen. This is the addition of this color. This is the addition of these three colors. And this is the addition of these three colors. This is the addition of these three colors. And look at the paper. What color is in the center? You can change that color also. Very interesting. And for that, these are the LEDs. And after that, I will show you one more.  Please come here on the screen. Please come here on the screen. You can change the color of the primary color. What is in this? In the earlier case, the last two colors are very difficult to add. But here you can add all three colors. Take that paper. Please come here on the screen. Please come here. Now keep watching. To which color mix you see now? On the center you'll see white. You can see this in both. This is the addition of both. And this is the addition of this. This is basically blocking this. So, this was this color, this two colors, and finally these two colors. And it means that it's available in the market. This type of LEDs. So, iska color combination kele ham iskimal kar sakti hain. Okay? And yeh sabi cheese na documenti yeh in the form of the photograph, in the form of the film. So, maia ptosa khusish karta hu kiye kaisa kaisa document karna. Weh sambar meh bood bada vacation hai, bachu kele lagba one and half month. So, bachu kele yeh, yeh ju hamarek mai website batata hu, these are all free downloadable things. That website, arvindguptatoys.com, shayad ham yaha likhenge bhi, that website having 4,000 free downloadable book, 3,000 films like this and the 8,000 photographs. So, isma yeh ju last film hain na, tum maia ptosa khusish karen ke cha hatha generator ka. Operated by wind where you can light four LEDs. You would require insulated copper wire, new dynamite magnets, bicycle spoke and other sundry parts. Now take a 500 ml bottle and cut it right in the middle. You would just require the top part. So, first you flatten them and then twist absolutely the fan which has a pip and a truff. So, rubber glue can generate a small emap. They will generate a small current double side to behold. I will tell you one more thing. This is not a government science center. It is in Ayukha campus, but I have been working on public support for almost 9 years. Tata trust na yeh kama ki liye, hamesha help krta hain. Onka yeh kik question hota hain ki, ap kitne municipal school me gaya. And municipal school hain, matrel aisa use krta ki, khamun available hain, wunki cost kum ho. Yeh di hain, humbot fancy material use krrengi, to shahid wunke leh, woposibali ne hoga. To lagbake 9 saal se chalda hain. Har hape 2 din workshop o campus me hota hain. Jada se jada hamara kama thru website. Roj hum 4 logon ki team hain, lagbake 45,000 people yeh website ko visit krta hain. Har kuch films download krna, dekhna, books dekhna. Yeh chalda hain. Har 4 logon ki team 45,000. Matla pi, imagine krdo, kikitna logon ki bhook hain. Matla pi, hame itna, matla pi asa hoona chahi, jaga jaga pe, lagin logon ke itni bhook hain, bachok ke itni bhook hain, ke unki leh pucha, itna materiali available nahi. Isle 45,000 log roj dekhne hain. Har bilkul public support pe chalda hain, not government supported. Ayuka ke campus me hain, lekin Ayuka khali, jaga hain, building aur kuch business computer yeh facility diya hai Ayuka ne, bachki tata trust aur jokuch individual logon ke support pe chalda hain. Matla, logon ke support pe kitna chah center chalda hain, uskai ke example hain.  Lekin download ke tata thoda sa quality download hojata hain. So yeh zili yeh, if anybody need this DVD, we have this DVD, that DVD having 1000 books, total PDF files and 8000 photographs of these ties and 220 films like this. Yeh toh bari lambi film deke apne. Lekin ek minute, 2 minute, 1.5 minute ke jada yeh hi duration ke film hain. Anybody want this DVD, the DVD is available over here as a minimum price, 100 rupees. And if you want to download this whole DVD, website pe pailai tarant hain, wo poora DVD bhi download krsakte. Lekin zai sabi na bol dehe ke download ke tata, thoda sa filmha quality download hai. Yeh zili yeh hi quality ki filmis me hain. Kisi ko chahi yeh to apnle sakte hain. Dho perke workshop me kuch bacha hain toh unko kucha hands-on kele, matla bacha hain se kuch karne wale hain. Toh unko workshop hoga. And last, maya, Dipankar sir, Manish sir ka thank you bolta ho ki usne invite kia. Thank you.


Hi, welcome to Enervation. We are at the crossroads of energy and conservation, hence the name Enervation. And our goal is to reduce energy consumption all over the world by reducing the energy of your electronic lighting and switching from fluorescent and incandescent lights to LED lighting. The federal policy to make energy-efficient bulbs more important in our daily life is a help. The problem is that most people think about energy-efficient lighting with regard to compact fluorescent lights. Compact fluorescent lights all have mercury, and mercury is a toxic pollutant that never breaks down. There's enough mercury in a four-foot fluorescent light to pollute 7,000 gallons of water. There's a lot of mercury in these little compact fluorescent lights that we take day in and day out, and instead of properly disposing of, pour them into the garbage can, which they go to your trash, and then go to recycled areas, and ultimately will seep into your water supply. Our goal is to get away from all of that and try to use more energy-efficient lighting and use lighting that doesn't pollute the earth in the process. LED lights are the best source of energy and light for energy-reduced and energy-efficient lighting. We really want people to remember regarding innovation is how energy-efficient we are, energy-conscious we are, and how using our LED lights will reduce your energy consumption and help save the earth.