Newton's prism experiment

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Khan Academy India - English

Khan Academy India - English

Күн бұрын

Let's explore how Sir Issac Newton experimentally proved that white light is made of all the colours of the rainbow.
Created by Mahesh Shenoy

Пікірлер: 37
@SP-fc2wo
@SP-fc2wo 6 ай бұрын
I would explain "why emerging light is white instead of color spectrum?" differently. Since the placement of 2nd prism is in opposite direction to the 1st, now red light travels longer distance and violet light travels shorter distance which contradicts to what 1st prism did and this nullified the spectrum effects caused by 1st prism giving back the white light. Those who are convinced by this explanation, please hit like button.
@benYaakov
@benYaakov 3 жыл бұрын
I can't belive that I found such a nice video Earlier I was searching a lot on youtube that why dispersion happens in prism and not in glass slabs . I watched a varities of videos but none of them could make me undetstand as this single video made me understand the whole concept . The key was that light was a collection of many rays so thats why it appears white
@sanjaykumarpalai4979
@sanjaykumarpalai4979 3 жыл бұрын
I pray that, this channel will shine like vibrant colours
@Hino_55
@Hino_55 4 жыл бұрын
Great explanation Sir Mahesh! Continue making great content!
@BismiEkrasGallery
@BismiEkrasGallery 4 жыл бұрын
This video is the best to clear the theory of colours of Sir Isaac Newton.....!
@comic4relief
@comic4relief 2 жыл бұрын
But does not a rainbow show a continuous spectrum and not just a series of discrete colour bands? It is our optical perception that gives us images of the recognisable colours.
@drharishnair3787
@drharishnair3787 5 жыл бұрын
Very nice and useful video and illustration. I was trying to find a suitable video for my son to recreate for his year 3 school science fair. I found this particular video immensely useful. Thank you very much.
@punithar6640
@punithar6640 3 жыл бұрын
Actually we were reading this for our board exams😂😂😂
@chandanidanu704
@chandanidanu704 3 жыл бұрын
I'm also understanding it for my exams nd for the personal knowledge..!😄
@drharishnair3787
@drharishnair3787 3 жыл бұрын
@@chandanidanu704 🤩
@theatrical5936
@theatrical5936 2 жыл бұрын
Very understanding thanks
@kiranbhat4902
@kiranbhat4902 4 жыл бұрын
Mahesh sir what if the 2prisms are placed at a gap as in ncert text book will again the rays emerge parallel to each other
@KhanAcademyIndiaEnglish
@KhanAcademyIndiaEnglish 4 жыл бұрын
Yes :)
@parthapd1
@parthapd1 4 жыл бұрын
@@KhanAcademyIndiaEnglish sir what about refraction..will they not refract towards the normal as it move to glass through air?
@tashadurrahman
@tashadurrahman 2 жыл бұрын
I don't really think the rays will emerge as a parallel beam.. because when going through the gap, the different colours will get separated due to refraction... In short, there will be just a little separation of the spectrum
@crancowan8020
@crancowan8020 3 жыл бұрын
Suggest reading Opticks by Newton. His descriptions of his experiments are quite easy to follow (and replicate) -- no conjecture is required regarding his thought process.
@santoss132
@santoss132 3 жыл бұрын
Another great video! But sir, I wanted to point out that you have forgotten to include the "Formation of rainbows(&how far are they)" in the playlist.
@rajeshjain4205
@rajeshjain4205 5 жыл бұрын
Haste muskuratein jeevan jeyoo kyuki zindgi na milege 2 I 2
@swethasweety8604
@swethasweety8604 6 жыл бұрын
Good explanation
@Yuvrajsingh-3ub
@Yuvrajsingh-3ub 3 жыл бұрын
Great Explanation ;; Thanks
@itsswara5118
@itsswara5118 4 жыл бұрын
It was very helpful thanks
@pcmlover8979
@pcmlover8979 2 жыл бұрын
which board do you use sir, just asking out of curiosity?
@manglarapuvennela6470
@manglarapuvennela6470 2 жыл бұрын
Tq so much for the great explanation I just understood the whole topic
@biggerthaninfinity7604
@biggerthaninfinity7604 3 жыл бұрын
This video was very interesting to watch and you explained very well!! Thx.
@wholeinone1203
@wholeinone1203 5 жыл бұрын
Thank you sir
@alameenabdullahi4812
@alameenabdullahi4812 Жыл бұрын
I like this voice
@ritumittal4083
@ritumittal4083 3 жыл бұрын
Great explanation
@connorhealy169
@connorhealy169 3 жыл бұрын
good job mr newton
@ManojKumar-mg9zm
@ManojKumar-mg9zm 3 жыл бұрын
amazing contenttttttt
@pmllnckt
@pmllnckt 6 ай бұрын
It's 6 colors not 7 , 7th was asked by the church to make it more "godly"
@fantasticarunjackandjonesd2360
@fantasticarunjackandjonesd2360 5 жыл бұрын
Nice Video
@xwareviewer5377
@xwareviewer5377 4 жыл бұрын
use a red laser to check ??????????????????????
@yousefahmed8896
@yousefahmed8896 2 жыл бұрын
brilliant thanks ❤️
@jayaprakashippilli1321
@jayaprakashippilli1321 10 ай бұрын
😂 can we make black colour light? I think it is not possible??????
@CastyourCuriosity
@CastyourCuriosity 8 ай бұрын
Black colour light don't exist in nature. Everything you see in black is actually absorbing light thrown to it making us a perception that object is black.
@aaravkumar131
@aaravkumar131 3 жыл бұрын
He sounds drunk Brilliant explanation though
@chri4047
@chri4047 3 жыл бұрын
Great explanation
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