Excellent explanation. It's like going through Newton's head. I wish all professors taught in this manner, following the logic of the founder/discoverer.
Bc Newton didn't do experiments with prisms, it was Göethe, in fact Göethe's color wheel is the right one, Newton's color wheel is based on mathematical gibberish.
Many NCERT books of Class 10 claim a very wrong diagram on page 193(Figure 11.6- recombination of the spectrum of white light) to be right. Many websites too claim the same. This proves them wrong. Thank you MIT
I refer you to the ultraviolet catastrophe. en.wikipedia.org/wiki/Ultraviolet_catastrophe As far as the actual construction of a light bulb, you sound sorta Indian, Pakistani, or Bangladeshi. Ask your countrymen how to build a lightbulb by hand. It involves tungsten, SiO2, a vacuum pump, and a soul-crushing hand-eye coordination.
Ruma Bhattacharya I am read in my physics combination of 7 colour is known as white light.In this vedio material used glass prism which can we use to artificial rainbow through the light
@@danwigersma1239 There is more than one source of light beyond the typical incandescent bulb. It could be from one of those, but it could also be from a fiber-optic strand or an LED, all of which have different projection and lighting properties. There are also different kinds of prisms made of different kinds of glass, including BAK prisms, which are typically necessary for these experiments. No need to insult people.
Excellent video and kudos for the great effort. You nicely explained what is happening. But please explain WHY at all the white light splits into various colors in a prism ? What happens to the white light inside a prism ? Because the same light passing through a glass slab will not split into spectrum. If you could explain it , your video will be 100 % perfect and 100 % appreciable.
its because the white light passing through is just an overlap of all the colors, and each individual color experiences a different refractive index, therefore spreading out the colors
is there any artificial source of white light that you know of that can be used to accomplish this experiment well? If so, what is it, and how would you set it up? I have not found a good way to adequately collimate light from an incandescent source. Thank you.
White As Alien X because Alien X have white ( Ben 10 Omniverse ). Black skin is also beautiful. Prism As Contumelia because Contumelia can appear in any shape ( Ben 10 Omniverse ). Red As Arishem because Arishem is red ( Disney's Eternals film ). Orange As The Real Creator Of Galaxies because there doesn't have to be only cartoons. Yellow As The One Above All because The One Above All is yellow ( By Jack Kirby ). Green As Drago because Drago have green eyes ( Bakugan Battle Brawlers ). Blue As Mr Litwak because Mr Litwak have blue eyes ( Disney's Wreck-It-Ralph film ). Indigo As Rick because Rick have blue hair ( Rick And Morty ). Violet As Ultimate Zeno because Ultimate Zeno have purple skin ( Dragon Ball Super ).
At 0:56 there are arrowheads drawn onto the "beam of light", but the light itself can not observed to be moving, so the arrowheads are misleading (that is a very common error). The only thing we can say is that the time until there is an effect of light interacting with a certain measuring instrument (made out of matter) and the time it takes for that interaction to occur is proportional. You can never see the light itself moving.
You can't see whether it moves or not, but it does move, and does have a direction. So, for logical purposes, it's okay to draw arrows to indicate the direction
Pascal Fabig Not that there necessarily is anything material that is moving, but the fact that light has a speed. It takes time for it to get from one place to another. Therefore the phenomenon of light, or the the occurrence of it, moves. Going back to the start of this, I don't see anything wrong or inaccurate about the arrowheads on the vectors of the light beam, because the 'occurrence' of light does travel in that direction. Now, please stop questioning obvious and necessary things for no reason.
Pascal Fabig You're clearly missing the point here. Even though, as I agreed with you on, light is not 'moving', those arrows still have a function and, simply speaking, light does move, so for the purpose of this experiment and for the understanding of viewers, it is good to assume it does. How else would you be able to show which side there would be a shadow on if you blocked the light. It just doesn't make any sense to say that this is wrong. I agree, light does not actually move, but even with that, why do you assume the arrowhead depicts movement? For example, arrows are used to depict forces, even on objects that aren't moving, and of course the force can't 'move' either. So please end this discussion and stop whining about something purely functional, which is aimed at increasing the legibility of a diagram.
Planet Pluto As White. Sun As Prism. Planet Mercury As Red. Planet Venus As Orange. Planet Earth As Yellow. Planet Mars As Green. Planet Jupiter As Blue. Planet Saturn As Indigo. Planet Uranus As Violet. Moon As Planet Neptune.
Wow. I hate that I didn't understand this stuff better as a kid. Then again, we didn't have the resources available now to learn this stuff so easily. You had a book to read it in, and if you were lucky, a science teacher to show you in class one day. 🤷♂️
"Newton carried out two decisive experiments. First, after using a prism to create separate rays of blue and red light, he directed these rays separately into other prisms, and found no further dispersion into different colors. Next, with a clever arrangement of prisms, he managed to recombine all the different colors produced by refraction of white light, and found that when these colors are combined they produce white light. "
I to everyone who cant figure out how he got a beam of white light. Its clearly sunlight. its the best light for this and the beam can be created by a couple pieces of cardboard over your window. or just barley crack your curtains if you have dark enough curtains to block most of the light.
Can you do an experiment where you take red green and blue (LEDs or lasers) combine them with a prism, then separate then to a full color spectrum? In short: RGB input, ROYGBIV output.
+John Smith It doesn't work like that. You can't get out light that isn't in the source. You can split sunlight into the full spectrum because all of the colours are already in the white light. But if you start with monochromatic red, green, and blue lasers, while you *can* mix them to form white light (this is called metamerism), splitting a beam of white light formed in this way will just reveal the same beams of red, green, and blue that went in.
Thank you so much for your succinct and articulate explanation. I'm having trouble understanding a certain principle though, which I hope someone could explain. How can you effectively create 'white light' by combining 2 prisms and a lens? Are you merely mimicking the input light? How does is work? Are you essentially splitting the constituent wavelengths via dispersion, then 'focusing' or 'combining' them again? I can't quite understand how (just from a fairly basic standpoint). Thank you
Focusing and combining is the same thing as far as i can think, in this case atleast. The RGB colors just need to be close enough to be *percieved* as white by your eye. They were close in intial ray and in the final ray too so we see white color in both these cases and they where seperated in the middle.
And this explanation makes sense bcz we know that their is no such thing as 'white light', white light is just a mix of different colors that OUR BRAIN THINKS IS WHITE. This can be proven by experiments like these and more convincingly using a spinning rainbow wheel.
I still don't understand why the triangle shape (section of the prism) separate the colors and the rectangle or square don't, we can see only a refraction? In another words, how the photon knows the glass has different shapes and decide to take different directions?
***** the dispersion starts while photon enters the prism so, how the photon knows the shape of the glass? I think the shape stretchs space time, there's no other possibility to explain this phenomenon.
Aahana Agarwal I know, I am talking about the section of the prism. The dispersion occurs right after the photons enter the prism, while in a square section just refract, do you understand what I am trying to explain?
Here is a thought Light separates because each color is different speeds so we can separate them Add distance (stars) would we not be able to see sooner with some lights
I wonder what I’m doing wrong. I have a similar apparatus and I can sort of reproduce the visible color spectrum but it would make for a poor demo for my students.
Very nice video on this kind of experiment that open so many door on technology afterwards. This platform let us spread all we know about the field and from MEETOPTICS we are proud to be part of the photonics community and to help engineers and researchers in their search for optical lenses through our site, from prisms to mirrors and fresnel lenses.
I am a student of class 10th from India, this video gives you a great practical concept of recombination of white light's concept. Thank you sir.
Same here
Excellent explanation. It's like going through Newton's head. I wish all professors taught in this manner, following the logic of the founder/discoverer.
8 years ago no replies?!?!?!?
@@heinzbeans4511 his life is lul 🤣
@@heinzbeans4511 hahahaha
Hi 🙂
The time when RUclips had nice videos.
yeah memer
Rasode mein kaun tha?!!?
Lol 😆
😂😂😂🤣🤣
Your profile pic 😂
Ahhh true!
I AM impressed. Light technology is the future that was here yesterday!
after 8 years
can you reply
@@playerunknown5109 probably hes dead
@@brittojoseph5928 lol I guess
@@playerunknown5109 😂😂😂😂
It would be cool if he blew smoke onto the beam to see the smoke illuminated in different colors and showing the light path as the colors separate
www.reddit.com/r/blackmagicfuckery/comments/cbztn9/smoke_filtering_through_a_prisms_rainbow/?
Oh yeah
@@khqlifq Do you know anything about the prism they used? I would like to replicate this.
@@khqlifq thank you so much!
Thank
Why does anyone vote down such a video?
Great work! Was nice to finally see it really happening =)
It is amazing, completely agreed!
They removed the downvotes now :(
Lulu light
everyone shows it in animations ... I wanted to see it happening and that's what u did ... Thanks bro
He explains it so well!
it was just so satisfying seeing the colors combining to give white as well as white scattering to give 7 colors! 🤩🤩
I can't explain why 10 people said they don't like this video, it's a very interesting video and completely conform with the title...
It is great, agreed!
Bc Newton didn't do experiments with prisms, it was Göethe, in fact Göethe's color wheel is the right one, Newton's color wheel is based on mathematical gibberish.
Wow, i studied the human eye and the colourful world but no one explained to me how interesting this is!! Thank youu
Great synchronization between the video and the narration! I'm impressed.
It is an amazing explanation
I really understand this topic after seeing that video
He explained so simply 👍👍
That's incredible! Leaves me wondering how different prism lenses in prism glasses effect light and colors. Great video!
Many NCERT books of Class 10 claim a very wrong diagram on page 193(Figure 11.6- recombination of the spectrum of white light) to be right. Many websites too claim the same. This proves them wrong.
Thank you MIT
I’m from India too
I literally have that page open in front of me rn lol
tbh I still don't get how that set up doesn't recombine the light...
@@a.a.a1324 me too lol
Thanks! Great explanation and demonstration. Now I now who the founder of NSA's surveilance program was.
It is so great, true!
My 10 year old daughter is studying Newton right now. It was very helpful to see this experiment after reading about it. Thank you!
Now she's 15
@@indianlove8387 now she's 17
Now she's 19
Now shes 20
i'll see you on the dark side of the moon
Thank you, I love how everything on RUclips is a time capsule
My jaw just dropped!! What an amazing explanation👏👏👏💖
I wonder if the light that the Moon reflects has the same spectrum with white and yellow shine than the Sun?
11 years after, here I am learning how to teach optics. Thank you.
I still havent been able to find a prisma like that one, i built one myself, but that one is so elegant
Great video. Got a bunch of high quality prisms and plano convex lens to demo this for my kid.
Bush Camping Tools please, tell me where to find such lens, I can’t find any.
Bush Camping Tools what size lens did you get? What price do they approximately cost, for that size?
What a genius Newton was, invented the Disc of colours, Gravity law and where a great mathematician.
This was AMAZING, thank you so much.
So nice, agreed! Let's go photonics!! 🚀
It's complicated to get a real conclution deeply thankyou for the 1st step🤝
It is an amazing first explanation, true!
This is the smartest shit I’ve seen on RUclips. I don’t understand any of it and to figure it out in the 1600s is amazing 😂
its just trigonometry, you learn it in 8th grade
@@2fifty533 right bcuz ppl actually take trig in 8th grade…stfu
All I could think of while watching this video was Pink Floyd.
True.
Pink floyd lo robo.
Ryan R. Ikr
FloydTrek 😂
Same
what is the source of white light?
what are the materials used for this experiment?
I refer you to the ultraviolet catastrophe. en.wikipedia.org/wiki/Ultraviolet_catastrophe As far as the actual construction of a light bulb, you sound sorta Indian, Pakistani, or Bangladeshi. Ask your countrymen how to build a lightbulb by hand. It involves tungsten, SiO2, a vacuum pump, and a soul-crushing hand-eye coordination.
The sun
The source of white light is sun. The materials used include a prism, a lens, and a screen.
Ruma Bhattacharya I am read in my physics combination of 7 colour is known as white light.In this vedio material used glass prism which can we use to artificial rainbow through the light
@@danwigersma1239 There is more than one source of light beyond the typical incandescent bulb. It could be from one of those, but it could also be from a fiber-optic strand or an LED, all of which have different projection and lighting properties. There are also different kinds of prisms made of different kinds of glass, including BAK prisms, which are typically necessary for these experiments. No need to insult people.
Excellent video and kudos for the great effort. You nicely explained what is happening. But please explain WHY at all the white light splits into various colors in a prism ? What happens to the white light inside a prism ? Because the same light passing through a glass slab will not split into spectrum. If you could explain it , your video will be 100 % perfect and 100 % appreciable.
its because the white light passing through is just an overlap of all the colors, and each individual color experiences a different refractive index, therefore spreading out the colors
dispersion occurs but it is at very small separation. Will need a very large distance to observe it.
is there any artificial source of white light that you know of that can be used to accomplish this experiment well? If so, what is it, and how would you set it up? I have not found a good way to adequately collimate light from an incandescent source. Thank you.
Different results for different sources, but follows the pattern. A knife-edge works.
White As Alien X because Alien X have white ( Ben 10 Omniverse ). Black skin is also beautiful.
Prism As Contumelia because Contumelia can appear in any shape ( Ben 10 Omniverse ).
Red As Arishem because Arishem is red ( Disney's Eternals film ).
Orange As The Real Creator Of Galaxies because there doesn't have to be only cartoons.
Yellow As The One Above All because The One Above All is yellow ( By Jack Kirby ).
Green As Drago because Drago have green eyes ( Bakugan Battle Brawlers ).
Blue As Mr Litwak because Mr Litwak have blue eyes ( Disney's Wreck-It-Ralph film ).
Indigo As Rick because Rick have blue hair ( Rick And Morty ).
Violet As Ultimate Zeno because Ultimate Zeno have purple skin ( Dragon Ball Super ).
At 0:56 there are arrowheads drawn onto the "beam of light", but the light itself can not observed to be moving, so the arrowheads are misleading (that is a very common error). The only thing we can say is that the time until there is an effect of light interacting with a certain measuring instrument (made out of matter) and the time it takes for that interaction to occur is proportional. You can never see the light itself moving.
You can't see whether it moves or not, but it does move, and does have a direction. So, for logical purposes, it's okay to draw arrows to indicate the direction
Pascal Fabig Not that there necessarily is anything material that is moving, but the fact that light has a speed. It takes time for it to get from one place to another. Therefore the phenomenon of light, or the the occurrence of it, moves. Going back to the start of this, I don't see anything wrong or inaccurate about the arrowheads on the vectors of the light beam, because the 'occurrence' of light does travel in that direction. Now, please stop questioning obvious and necessary things for no reason.
Pascal Fabig You're clearly missing the point here. Even though, as I agreed with you on, light is not 'moving', those arrows still have a function and, simply speaking, light does move, so for the purpose of this experiment and for the understanding of viewers, it is good to assume it does. How else would you be able to show which side there would be a shadow on if you blocked the light.
It just doesn't make any sense to say that this is wrong. I agree, light does not actually move, but even with that, why do you assume the arrowhead depicts movement? For example, arrows are used to depict forces, even on objects that aren't moving, and of course the force can't 'move' either. So please end this discussion and stop whining about something purely functional, which is aimed at increasing the legibility of a diagram.
Pascal Fabig Well Pascal how can you tell that a ball is actually moving?
Hmm at 5:00 I saw spectrum of light on the sheet even when the light ray changes it's path through the prism. Interesting 😌😌
It is from the light beam that crosses the lens
Man this would have made such a cool album cover, so sad that no band adopted an image of a light prism for their music
Elohel
What a great demo. Thank you!
It is amazing, true!
At 1:20 ".. those are the colours that occur, when you pass white light through a prism..."
Nice explanation 👍
BTW RUclips recommend this vid to me after 8 years 😂😂😂🤣🤣🤣
It never dies!
And a prism set from just about any source (Amazon Edmond Scientific etc) is plenty cost effective and that’s all you need.
Thank you so much! I needed this to demo light dispersion to my student.
Where does one simply find a glass prism laying about at home? T_T
You can easily find it in schools 🤷♂️
@@arandombeing7262 LOL. I'm a PhD candidate tutoring kids online.
@@lynnfallible lol you can easily buy it then it will be fun for you too just playing around with it
Don't know if it's the case, but with a proper output you can get a similar beam from a fiber optic light box!
Excellent video. Wonderful explanation. Thanks a lot.
It is great, true! Thank you
Awesome
By seeing you, I want to do this
It's so interesting😍😍😍
It is amazing, we need to spread knowledge on this technology
Great video!!! But it's farther not further when speaking about distance.
what first comes in my mind is Pink Floyd
Phil chaser it's red nor a pink because the wavelength and speed of red is much higher than V,I B,G,Y,O
Vishesh Yadav im talking the Band pink floyd
Technical World With Vishesh j
Who is this
Really helped, @MITK12Videos !
I heard about reuniting the colors of the rainbow, yet I have never done the experiment. Thanks for showing.
Thank you for support korean subtitle :) That's so interesting and useful video!
Army💜
❓
science is always intresting
This video is amazing
🌹❤Thank you very much, I did not understand this lesson, but when I joined you in this video, you understood it well. Thank you very much
what a great video!! thanks so much!! rich in fascinating info and so concise too! super job!!
Thank you so much, it is great, true!
The people with eye strabismus, using angled glasses, will they see separated colors?
Planet Pluto As White.
Sun As Prism.
Planet Mercury As Red.
Planet Venus As Orange.
Planet Earth As Yellow.
Planet Mars As Green.
Planet Jupiter As Blue.
Planet Saturn As Indigo.
Planet Uranus As Violet.
Moon As Planet Neptune.
Elegant explanation, I love it
thank you for using korean subtitle!!
Thank you for the simple and concise explanation. Did you use acrylic or glass prisms and lenses?
It is an amazing explanation, true!
I'm curious to see what happens with further color separation and that light going through a prisim.
Fun fact: You wanted to skip this video but noticed his explanation is better than your teacher.
It is definitely a great explanation!
Thank you so much this is beginning pretty easy ... I will tell my friends to listen to this vid.. Thank you so much :)
It is great! We need to spread knowledge
this video was helpful and helped in my science exam and i am grade 5
We celebrate that! It is an amazing explanation
Wow. I hate that I didn't understand this stuff better as a kid. Then again, we didn't have the resources available now to learn this stuff so easily. You had a book to read it in, and if you were lucky, a science teacher to show you in class one day. 🤷♂️
It is great things are improving!
Wow!!
I'm tried and it's works.
It's pink color.
🤓🤓👌👌👌👌👍👍👍👍👀👀
So good! Congratulations
excellent work
It is so good, completely agreed!
I think that's the same principal the Great Pyramid of Giza is working on.
Any help to solve this mystery? I have lots of ideas!
Yes.... This is very interesting... Actually this is my study topic.. And now I understand this..
It is great, agreed!
This is actually really cool!!
"Newton carried out two decisive experiments. First, after using a prism to
create separate rays of blue and red light, he directed these rays separately into other prisms, and found
no further dispersion into different colors. Next, with a clever arrangement of prisms, he managed to
recombine all the different colors produced by refraction of white light, and found that when these
colors are combined they produce white light.
"
So according to refraction of light lens can also produce 7 colour of white light yes or no pls try this in the video
Now i never forgot it
That's great! Congrats
When a video is uploaded by MIT, you know that it is no less than GOLD
It is exactly like gold!
Newton also designed album covers 😯
I to everyone who cant figure out how he got a beam of white light. Its clearly sunlight. its the best light for this and the beam can be created by a couple pieces of cardboard over your window. or just barley crack your curtains if you have dark enough curtains to block most of the light.
Can you do an experiment where you take red green and blue (LEDs or lasers) combine them with a prism, then separate then to a full color spectrum?
In short: RGB input, ROYGBIV output.
+John Smith It doesn't work like that. You can't get out light that isn't in the source. You can split sunlight into the full spectrum because all of the colours are already in the white light. But if you start with monochromatic red, green, and blue lasers, while you *can* mix them to form white light (this is called metamerism), splitting a beam of white light formed in this way will just reveal the same beams of red, green, and blue that went in.
So simple to us, now.
But useful anyway
What is the source of white light?
Which type of glasses we can use for dispersion of light
Thank you so much for your succinct and articulate explanation. I'm having trouble understanding a certain principle though, which I hope someone could explain. How can you effectively create 'white light' by combining 2 prisms and a lens? Are you merely mimicking the input light? How does is work? Are you essentially splitting the constituent wavelengths via dispersion, then 'focusing' or 'combining' them again? I can't quite understand how (just from a fairly basic standpoint). Thank you
Focusing and combining is the same thing as far as i can think, in this case atleast. The RGB colors just need to be close enough to be *percieved* as white by your eye. They were close in intial ray and in the final ray too so we see white color in both these cases and they where seperated in the middle.
And this explanation makes sense bcz we know that their is no such thing as 'white light', white light is just a mix of different colors that OUR BRAIN THINKS IS WHITE. This can be proven by experiments like these and more convincingly using a spinning rainbow wheel.
That was very interesting and gas what I have the story of Isaac Newton making rainbows.
what was used to produce the light that was refracted through the prism
micky rox sun
A optics kit can be used
i was always wishing to see a actual spectrum from a prism
V.good explanation 👍
So great, completely agreed!
I still don't understand why the triangle shape (section of the prism) separate the colors and the rectangle or square don't, we can see only a refraction? In another words, how the photon knows the glass has different shapes and decide to take different directions?
***** the dispersion starts while photon enters the prism so, how the photon knows the shape of the glass? I think the shape stretchs space time, there's no other possibility to explain this phenomenon.
drive.google.com
Can you tell me the shape of the glass above?
celio gouvea that is not triangle shape it is prism
Aahana Agarwal I know, I am talking about the section of the prism. The dispersion occurs right after the photons enter the prism, while in a square section just refract, do you understand what I am trying to explain?
Why didn't I try this when I was a kid?
Curiosity
it is never too late for trying!
excellent! can you show how you controlled your light source? and confirm it's the sun?
Here is a thought
Light separates because each color is different speeds so we can separate them
Add distance (stars) would we not be able to see sooner with some lights
It goes different speeds through a particular material. Since there is very little matter in space, there isn't much of an effect.
Whoever disliked this video are the ones who regret the death of lord NEWTON!!😂😂😂
They are bots
That is one of the best roasts I’ve ever heard
@@pyro8446 born roaster bro😁😂
😀😀😀🤣🤣🤣LOL
@@akanksha..1997 heyy dude do ya have insta account?
I feel My IQ is increasing
Great explanation!
It is amazing, true!
How did u get that thin ray of light??
Mirror and water experiment or water droplets also make the same spectra
What are these prisms made of? Glass, acrylic or what? I need one for an experiment!
Most probably glass
I wonder what I’m doing wrong. I have a similar apparatus and I can sort of reproduce the visible color spectrum but it would make for a poor demo for my students.
Beautifully explained Sir
Yes, completely agreed!
dear sir,
may i plz know how to obtain a good source of light beam from the sun for the above experiment
U could use a flashlight
Magnify glass :)
Trichromatic theory of light composition, not only of color. There are only three photons
I have a very similar setup and I cannot produce the visible spectrum almost all. Wonder what I’m doing wrong?
Sir u done a great job 👏👏
Can we use torch light as source of light ... Pls tell I have presentation in school .. pls
Thank it's so interesting and helpful
Very nice video on this kind of experiment that open so many door on technology afterwards. This platform let us spread all we know about the field and from MEETOPTICS we are proud to be part of the photonics community and to help engineers and researchers in their search for optical lenses through our site, from prisms to mirrors and fresnel lenses.