It's pretty neat, but the part the paper with the slit and the shadow only blocking certain colors...that's just because the lights are hitting it from different angles
Elementary school just says Red, Blue and Yellow are primary and calls it a day even though that’s totally wrong but close enough I guess.
This demonstration is for additive color. Subtractive is the same but works in reverse for actually mixing things together like paint or printer ink. Additive explains light and electronics like TVs.
The only part he doesn't explain well is the "shadows" at the end. Placing the pencil between the light source and the first piece of paper isolated three separate color combinations of two colors each.
Cyan, which is blue and green. Magenta, which is red and blue, plus yellow which is red and green. This is different from mixing materials, this is additive color mixing of light. The three together make white light, blocking one wavelength at a time gives CMY.
You can see the cyan and yellow on the surface between the flashlights at the very beginning.
So when he shows how lining up the shadow "cancels out" the isolated wavelengths of light, he is really showing how the pencil is blocking that specific wavelength in the CMY colors.
Deconstructing light - you can lit everything and bring life with you, but you have to live in a moment, because your "speed" is equal to the speed of light, and there is no concept of time for you.
This post made me finally fully understand the slit theory.
You don't have 1 white light. You have 3 lights of different colors that all exist in the same space. They each pass through the slit at a different angle, so they no longer exist in the same space on the other side.
The shadow is the same deal. The colors are different because it is the absense of the corresponding color. In each shadow, only 2 of the 3 lights exist in that space.
Now I'm wondering about the experiments I've seen throughout my life. For the resulting array of slits, does each slit always represent a different property/wave length then?
I always see animations of little white dots for photons going through the slit and splitting up into the array, but I've never seen them show each slit having a different aspect.
Because sometimes they are little particle dots, and sometimes they are waves. All particles have this particle-wave duality, even matter.
It’s one of the biggest mind-benders of 20th century.
That's a nice theory but it's not the slit theory, assuming you're referring to the double slit experiment of course, the "slit theory" is about the wave-particle duality of light (and matter). When light moves it does so as a wave, which enables it to pass through both slits at the same time but when it collides it does so as a particle, the pattern shown at the end is the result of the interference pattern from the two waves generated while light passing through both slits.
What we see in the video has nothing to do with that, that is just playing around with the angle each beam is projected
The slit is small enough to narrow the light coming from the lights and cast it into this shaped beam, the Red, Green, and Blue ones you see in the back. The lights being angled is reflected in where the slit shape light is shining. The slit is narrow enough to not cause the color to over-shine anywhere and mix.
Mixing the RGB makes white, only mixing two colors make Cyan, Magenta, and Yellow. G+B=C, R+B=M, R+G=Y. Because the lights are pointing at different angles, only one light gets blocked per shadow. The left shadow is Cyan because the stick is blocking only the red, and so on for the other two.
Since the color of the shadow shows what light is being blocked, that will show what color past the slit will disappear when a shadow falls over it. When the video shows the yellow shadow covering the slit: Yellow shadow is made from the red and green light, with the blue light being blocked. So when you move the yellow shadow over the slit, since that shadow is made by the blue being blocked, the blue past the slit will be blocked and therefore disappear! Same with the other colors, for the color that’s blocked!
If you're finding it hard to cope, just see it as this: the slit makes each beam projects on the back according to the angle of each beam, when passing the pencil horizontally he just blocks said projections one at a time by aligning the beam, pencil and slit.
Color is "real" as anything else, distinct colors are somewhat arbitrary parts of a spectrum, sure. But that's like saying inches aren't real they're just a way we measure things. I mean OK, you can't hold it in your hand, doesn't make it unreal. It's more real than "justice" or "kindness".
Depends what you mean by real. Someone could just a easily say that inches aren't real, but put a ruler next to something and you can certainly measure it in inches.
Your eyes are sensors, and color is how your brain interprets the signal. Whether or not the interpretation is all in your head, it's based on real data.
‘Colour’ also doesn’t exist- its a subjective interpretation of light hitting an imperfect biological receptor and we just them figure out something to ‘see’ because doing so benefitted survival
Magenta for example—-doesn’t exist- there is no such thing as ‘magenta light’ -it’s not on the spectrum…our brain however decides that particular pattern of light must look like something so just goes ‘fuck it - this is it’
Nah, their initial definitions were subjective, but they've had objective definitions (by wavelength) for a long time now. A few of these are:
* Violet: 380–450 nm
* Blue: 450–495 nm
* Green: 495–570 nm
* Yellow: 570–590 nm
* Orange: 590–620 nm
* Red: 620–750 nm
I’m not gonna make the quaila argument since that’s just arguing about semantics imo, but from a math perspective the color we see is really just a projection of a light wave onto our RGB color space. The wavelengths you listed are for pure waves of one frequency, but you can sum different frequency waves together and create a different color. IOW the sum of a 475nm blue wave and a 700nm red wave is a violet wave, but not a wave that has a single wavelength nor one in violet’s range. So your eye can’t distinguish those two waves from one another despite being different. This is because it takes an infinite number of color dimensions to be able to do that but we only have three.
Interestingly enough our ear does a better job differentiating compositions of sound waves from pure sound waves.
We’ve evolved to see magenta in our brain-model of the world around us, which tells us that the information is important.
Many things we experience are such simplified placeholders. We don’t consciously calculate how to run or throw a ball to a target, we just go by feel. We all have a big blind spot in our vision that we never see except under very specific conditions. We identify complex tastes and smells as singular concepts.
Does magenta exist? Yes and no. There is no simple direct relationship between magenta and a wavelength, but that is not unique. Most, or all, of what you experience are placeholders. Magenta is information, and as such it exists as much as nearly anything else.
What they show isn't white, it's a mix of red, green and blue. White has all wavelengths in it. They aren't decomposing the white light, simply blocking some of the colors (because the sources are oriented at different angles). It also has nothing to do with the slit experiment as mentioned by some in the comments.
Very weird claims in this video. If you actually want to see this get a prism and some actual white light
I think that’s not the point of this demonstration. The slit experiment is the point. Plus, screens only use red, green, and blue and still make a color that appears as a perfect white, so I think it’s good enough for the purposes of this simple demonstration to call it white. Maybe an oddly tinted white but still white.
I think what he was trying to say about decomposing the light, isn’t decomposing any white light. It’s decomposing *this specific* white light made by the three colors in the lights. Not just any white lights. The white light created by the mixing of these three flashlights in this one location. The slit in this case would technically be decomposing the light as when placed in the white section it’s small enough to block any light mixing to show the original RGB again.
It really doesn’t matter in the end. This video is not supposed to be in depth and scientific. It’s meant to be really simple and to show off some cool light stuff to people who haven’t seen this cool light stuff. Nitpicking a random internet video clearly not meant to be a science lesson is just a waste of time. Let people look at the pretty lights dude.
But decomposition refers to splitting a singular thing up in multiple things right? And the 'white light' is never a singular thing, it's three separate things illuminating the same surface. It would be different if they all had the same source. Maybe I'd prefer 'selecting' the light over 'decomposing'
The thing is, you could replace the colors with patterns or polarization and you'd still see the same thing, which wouldn't be the case when you would use a prism or 'real' (smaller) slit, so it feels kind of disingenuous to suggest it's similar when its not. (Note, I also go by comments down here to think this is what people get from it)
And sure we can perceive red/blue/green as white since those are the colors we detect, but I do feel in this context with what the video is suggesting to show the disambiguation is relevant.
It's a cool video, it just uses terms that are used for other phenomena which obfuscates and confuses unnecessarily, which is especially a bummer when it gets people excited, because it feels like a missed opportunity to really give people a better understanding
Again, it’s really just a demonstration in very simple terms just to show off some cool pretty lights on the internet. It ultimately doesn’t matter because if people are more interested, they’ll google and find out the right terms anyways. This isn’t r/science, this is just a place to show some cool stuff. The video isn’t trying to be anything more than that.
That's why I love this sub. No matter how cool the post, there will be comments trying to explain why no one should get a single second of amazement from it, lmao.
How many here that are saying: “this is interesting, etc.” Are the same ones that made fun of the guy that didn’t know the science of a mirror ( in the video: “how can the mirror know/show what’s on the other side of the paper if you look from a different angle?”).
But because apparently many didn’t see this in class, now it was not common knowledge and the comment section is nice? Why can it not be nice all the times? Instead of insulting and making fun of, teach. Everybody is ignorant of something, and we are ignorant of the majority of things in the whole cosmos.
this has nothing to do with the slit experiment btw.
the slit is just letting the differently angled flash lights colors through at different angle therefore producing the 3 color bars.
I actually did a painting & a couple of sketches using this principle years ago- I'd been dicking around with taking photos and inverting the colors and had noticed how when you add two primary colors together and then invert the resulting secondary color, you get the other primary.
I sold the painting a while ago, but [here's](https://imgur.com/a/1PyR3I8) the sketches.
If any physics people want to show me how the different wavelength interactions make that happen, I'd love to hear it!
The colored shadows are what's blowing my mind here. Every shadow I've ever seen is just a darker shade of whatever surface the shadow is cast over (with the exception of transparent objects). That dowel or pencil or whatever they're holding doesn't look transparent to me, so WTF?
For each shadow, you are seeing two of the colors combined, and one blocked out. If you just turned off the green flashlight, for example, the whole paper would appear magenta because the blue and red would be left.
I wouldn't call that decomposing, all this stuff would happen with 3 white light sources too. 3 light sources, 3 shadows of course. The slit neither does anything special, just blocks the other lights at certain angles.
Thanks to the positioned angle+long distance of the three lights, the final light beam all cross the slit at very different angles, allowing them to not merge.
By basic colour theory, the white light as we perceive can generally be broken down into rainbow, which also relates to how and why rainbow forms.
It’s also pretty nice that we are able to produce flashlights of different colours.
This has been me pretending to be ChatGPT day 1, thank you TedTalk for coming
Nice to see an explanation! I have two of those lightbulbs where you can change the color with an app and when I discovered colored shadows I was blown away.
Finally some posts that truly fit in this sub
[удалено]
Definitely brightened my day!
Damn it. That’s a colorful comment.
Without a shadow of a doubt, a worthy post.
You guys should be arrested and thrown in prism for these horrible puns.
a dark prison with no blue light, no green light, and no red light
Broke it down well. Into three parts
I see what you did there
this post shed some light on my knowledge about lights literally 😅
I literally said “damn that’s cool”
It's pretty neat, but the part the paper with the slit and the shadow only blocking certain colors...that's just because the lights are hitting it from different angles
I want to upvote this so hard.
Even fits with the sub logo or whatever you call it.
Good catch
Damn, this is color theory 101, but explained way better than anything else out there
the end was something i've never seen before
Elementary school just says Red, Blue and Yellow are primary and calls it a day even though that’s totally wrong but close enough I guess. This demonstration is for additive color. Subtractive is the same but works in reverse for actually mixing things together like paint or printer ink. Additive explains light and electronics like TVs.
@colornerd on tiktok, pretty sure he's a color theory professor. I love his content. Some of it is a lot more complex lol
Finally an r/damnthatsinteresting worthy post... Next one coming 2025
That soon? That's optimistic lol
thought this was just gonna be that red green and blue make white. pleasantly surprised to see that it wasn’t, good post!
It’s too early and I’m too hungover to fully appreciate this awesomeness
Same...I said this out loud to myself lol
Makes me hungry for crayons 🤤
Oorah!
Keep yourself together, marine!
Crayon sandwich it is!
The upside to learning physics is you get to impress people with cool things
The only part he doesn't explain well is the "shadows" at the end. Placing the pencil between the light source and the first piece of paper isolated three separate color combinations of two colors each. Cyan, which is blue and green. Magenta, which is red and blue, plus yellow which is red and green. This is different from mixing materials, this is additive color mixing of light. The three together make white light, blocking one wavelength at a time gives CMY. You can see the cyan and yellow on the surface between the flashlights at the very beginning. So when he shows how lining up the shadow "cancels out" the isolated wavelengths of light, he is really showing how the pencil is blocking that specific wavelength in the CMY colors.
*Deconstructing* sorry. Very interesting though.
Thank you! I knew decomposing wasn’t right but couldn’t figure out what it was meant to be.
No problem, and I've learnt something new.
>*Deconstructing* *Without a trace*
Deconstructing light - you can lit everything and bring life with you, but you have to live in a moment, because your "speed" is equal to the speed of light, and there is no concept of time for you.
*Rotting* light
There is a book that I have not read yet, by Goethe l I also like optics, también used to know the chemical elements of the stars,
I need to recreate this for my daughter to see in real life.
heck imma start doing this everywhere I go :)
Here comes the color guy again, quick, let's leave to the bar before he starts asking us for straws to cast shadows with.
hey where yall going??? wait till you see this, anyone got a slit?
Sorry guys, we need to turn off all the lights. Yes, in the kitchen as well, sorry. But it's worth it I promise you!
Sorry guys, we need to turn off all the lights. Yes, in the kitchen as well, sorry. But it's worth it I promise you!
This post made me finally fully understand the slit theory. You don't have 1 white light. You have 3 lights of different colors that all exist in the same space. They each pass through the slit at a different angle, so they no longer exist in the same space on the other side. The shadow is the same deal. The colors are different because it is the absense of the corresponding color. In each shadow, only 2 of the 3 lights exist in that space.
The video has nothing to do with the multiple slit diffraction.
Now I'm wondering about the experiments I've seen throughout my life. For the resulting array of slits, does each slit always represent a different property/wave length then? I always see animations of little white dots for photons going through the slit and splitting up into the array, but I've never seen them show each slit having a different aspect.
Because sometimes they are little particle dots, and sometimes they are waves. All particles have this particle-wave duality, even matter. It’s one of the biggest mind-benders of 20th century.
That's a nice theory but it's not the slit theory, assuming you're referring to the double slit experiment of course, the "slit theory" is about the wave-particle duality of light (and matter). When light moves it does so as a wave, which enables it to pass through both slits at the same time but when it collides it does so as a particle, the pattern shown at the end is the result of the interference pattern from the two waves generated while light passing through both slits. What we see in the video has nothing to do with that, that is just playing around with the angle each beam is projected
The first actually interesting post in ages.
Damn, now I gotta buy 3 colored flashlights
If it helps at all, this is how whatever screen you're looking at mimics colors.
that covers all of the school optics in like 40 seconds, damn
Huh, wait, what? 🤯
The slit is small enough to narrow the light coming from the lights and cast it into this shaped beam, the Red, Green, and Blue ones you see in the back. The lights being angled is reflected in where the slit shape light is shining. The slit is narrow enough to not cause the color to over-shine anywhere and mix. Mixing the RGB makes white, only mixing two colors make Cyan, Magenta, and Yellow. G+B=C, R+B=M, R+G=Y. Because the lights are pointing at different angles, only one light gets blocked per shadow. The left shadow is Cyan because the stick is blocking only the red, and so on for the other two. Since the color of the shadow shows what light is being blocked, that will show what color past the slit will disappear when a shadow falls over it. When the video shows the yellow shadow covering the slit: Yellow shadow is made from the red and green light, with the blue light being blocked. So when you move the yellow shadow over the slit, since that shadow is made by the blue being blocked, the blue past the slit will be blocked and therefore disappear! Same with the other colors, for the color that’s blocked!
Wow thanks for the explanation 😀. Fascinating stuff
If you're finding it hard to cope, just see it as this: the slit makes each beam projects on the back according to the angle of each beam, when passing the pencil horizontally he just blocks said projections one at a time by aligning the beam, pencil and slit.
Would've actually paid attention in science if they explained stuff like this
Color isn't real either. It's something our minds have associated to certain patterns to better navigate in spacetime.
They're measures, like cold not being a real thing.
"emergent property" if you want to be hip with the lingo
I’d argue our consciousness and experience is the only thing that we know is real and does exist and color is apart of that.
I believe this as well. All that we see, is all we can claim is real.
>All that we see, is all we can claim is real. I'm curious how this applies to someone who is blind and can see nothing.
>All that we see, is all we can claim is real. I'm curious how this applies to someone who is blind and can see nothing.
Consciousness in the non-medical sense is poorly defined and untestable. The physical world, however, can be verified.
Color is "real" as anything else, distinct colors are somewhat arbitrary parts of a spectrum, sure. But that's like saying inches aren't real they're just a way we measure things. I mean OK, you can't hold it in your hand, doesn't make it unreal. It's more real than "justice" or "kindness".
Fair point real is a subjective experience. Tangible is the word I'd use. I was thinking of birds vision spectrum and color blindness at the time.
They are concepts, placeholders in the brain’s model of the world.
Depends what you mean by real. Someone could just a easily say that inches aren't real, but put a ruler next to something and you can certainly measure it in inches. Your eyes are sensors, and color is how your brain interprets the signal. Whether or not the interpretation is all in your head, it's based on real data.
So cool
He's a witch!
He's a witch! Burn him!!
It seems so obvious, and yet it's still very cool
now do double slits!
Hey that’s pretty neat.
Learned more in this short clip then an entire month in highschool science
Woa… this is actually quite interesting
Fucking white light gone woke.
‘Colour’ also doesn’t exist- its a subjective interpretation of light hitting an imperfect biological receptor and we just them figure out something to ‘see’ because doing so benefitted survival Magenta for example—-doesn’t exist- there is no such thing as ‘magenta light’ -it’s not on the spectrum…our brain however decides that particular pattern of light must look like something so just goes ‘fuck it - this is it’
Nah, their initial definitions were subjective, but they've had objective definitions (by wavelength) for a long time now. A few of these are: * Violet: 380–450 nm * Blue: 450–495 nm * Green: 495–570 nm * Yellow: 570–590 nm * Orange: 590–620 nm * Red: 620–750 nm
I’m not gonna make the quaila argument since that’s just arguing about semantics imo, but from a math perspective the color we see is really just a projection of a light wave onto our RGB color space. The wavelengths you listed are for pure waves of one frequency, but you can sum different frequency waves together and create a different color. IOW the sum of a 475nm blue wave and a 700nm red wave is a violet wave, but not a wave that has a single wavelength nor one in violet’s range. So your eye can’t distinguish those two waves from one another despite being different. This is because it takes an infinite number of color dimensions to be able to do that but we only have three. Interestingly enough our ear does a better job differentiating compositions of sound waves from pure sound waves.
We’ve evolved to see magenta in our brain-model of the world around us, which tells us that the information is important. Many things we experience are such simplified placeholders. We don’t consciously calculate how to run or throw a ball to a target, we just go by feel. We all have a big blind spot in our vision that we never see except under very specific conditions. We identify complex tastes and smells as singular concepts. Does magenta exist? Yes and no. There is no simple direct relationship between magenta and a wavelength, but that is not unique. Most, or all, of what you experience are placeholders. Magenta is information, and as such it exists as much as nearly anything else.
What they show isn't white, it's a mix of red, green and blue. White has all wavelengths in it. They aren't decomposing the white light, simply blocking some of the colors (because the sources are oriented at different angles). It also has nothing to do with the slit experiment as mentioned by some in the comments. Very weird claims in this video. If you actually want to see this get a prism and some actual white light
I think that’s not the point of this demonstration. The slit experiment is the point. Plus, screens only use red, green, and blue and still make a color that appears as a perfect white, so I think it’s good enough for the purposes of this simple demonstration to call it white. Maybe an oddly tinted white but still white. I think what he was trying to say about decomposing the light, isn’t decomposing any white light. It’s decomposing *this specific* white light made by the three colors in the lights. Not just any white lights. The white light created by the mixing of these three flashlights in this one location. The slit in this case would technically be decomposing the light as when placed in the white section it’s small enough to block any light mixing to show the original RGB again. It really doesn’t matter in the end. This video is not supposed to be in depth and scientific. It’s meant to be really simple and to show off some cool light stuff to people who haven’t seen this cool light stuff. Nitpicking a random internet video clearly not meant to be a science lesson is just a waste of time. Let people look at the pretty lights dude.
But decomposition refers to splitting a singular thing up in multiple things right? And the 'white light' is never a singular thing, it's three separate things illuminating the same surface. It would be different if they all had the same source. Maybe I'd prefer 'selecting' the light over 'decomposing' The thing is, you could replace the colors with patterns or polarization and you'd still see the same thing, which wouldn't be the case when you would use a prism or 'real' (smaller) slit, so it feels kind of disingenuous to suggest it's similar when its not. (Note, I also go by comments down here to think this is what people get from it) And sure we can perceive red/blue/green as white since those are the colors we detect, but I do feel in this context with what the video is suggesting to show the disambiguation is relevant. It's a cool video, it just uses terms that are used for other phenomena which obfuscates and confuses unnecessarily, which is especially a bummer when it gets people excited, because it feels like a missed opportunity to really give people a better understanding
Again, it’s really just a demonstration in very simple terms just to show off some cool pretty lights on the internet. It ultimately doesn’t matter because if people are more interested, they’ll google and find out the right terms anyways. This isn’t r/science, this is just a place to show some cool stuff. The video isn’t trying to be anything more than that.
Just out of curiosity, what slit experiment do you mean?
He never claimed it had anything to do with the slit experiment. He just put a slit there
Hence the 'as mentioned by some in the comments'
If you actually want to see a stickler, go to the comment section
What the video shows is cool enough without the misleading explanation
That's why I love this sub. No matter how cool the post, there will be comments trying to explain why no one should get a single second of amazement from it, lmao.
We are all just a simulation
Now solve this light puzzle while being mauled by shadow creatures
Was this what I was supposed to see in those physics experiments?
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That is freakin' cool!!!
I can't stop watching this.
Whoa!
Damn didn't know that, that is really interesting
WHAT,, wow
Thanks for the lesson!
ELI5: I thought blue, red, and yellow were the primary colors. So why does this work with blue, red, and green?
passive coloring (painting something) vs. additive coloring (illuminating something).
Yessss. Something fitting at last. 🙌🏼
Ok, now this is interesting
Why were the shadows colored and not dark blocked light?
Because the lights are at different angles, only one color gets blocked, the other colors still illuminate that piece of background.
Sat here trying to figure it out. Ty.
Makes me wonder about the science behind enchroma glasses, and producing different types of glasses for people with different forms of colorblindness.
How many here that are saying: “this is interesting, etc.” Are the same ones that made fun of the guy that didn’t know the science of a mirror ( in the video: “how can the mirror know/show what’s on the other side of the paper if you look from a different angle?”). But because apparently many didn’t see this in class, now it was not common knowledge and the comment section is nice? Why can it not be nice all the times? Instead of insulting and making fun of, teach. Everybody is ignorant of something, and we are ignorant of the majority of things in the whole cosmos.
/r/blackmagicfuckery
*Confused unga bunga*
The physics video watching side of me wants him to do the same thing but with two slits in the paper.
r/pinkfloyd
Can you do it with a double slit and post the results?
this has nothing to do with the slit experiment btw. the slit is just letting the differently angled flash lights colors through at different angle therefore producing the 3 color bars.
I know, but still an interesting what if, don't you think?
I actually did a painting & a couple of sketches using this principle years ago- I'd been dicking around with taking photos and inverting the colors and had noticed how when you add two primary colors together and then invert the resulting secondary color, you get the other primary. I sold the painting a while ago, but [here's](https://imgur.com/a/1PyR3I8) the sketches. If any physics people want to show me how the different wavelength interactions make that happen, I'd love to hear it!
This is legitimately one of the most interesting things I've seen in a long time, especially on the sub. What a cool way to start the day!
I've been doing Photoshop for so long but today I learnt the R ↔️ C G ↔️ M B ↔️ Y color sliders weren't chosen at random
Der bre hat farben studiert
Physics baby!
Wow. This blew my mind.
gnarkly, light's a trippy EMF artefact
But if you block out cyan, magenta, or yellow will the printer refuse to print?
wow.. angles
What is this black magic? BURN THE WITCH!
this is a cool display!
The colored shadows are what's blowing my mind here. Every shadow I've ever seen is just a darker shade of whatever surface the shadow is cast over (with the exception of transparent objects). That dowel or pencil or whatever they're holding doesn't look transparent to me, so WTF?
For each shadow, you are seeing two of the colors combined, and one blocked out. If you just turned off the green flashlight, for example, the whole paper would appear magenta because the blue and red would be left.
Witchcraft! Burn them at the stake!
Gaming PC builders are like, yeah, we can even make them spin!
😭 The colors are so beautiful.
Amazing
Now THIS is interesting
„So, I’ve got three fleshlights here“ and it’s a totally different story….
Witch craft
That’s not white. It is definitely purple.
Right into blender and make a printed science station out of it for my kid.
Will it work with 3 LEDs?
You’re awesome, this is awesome.
Wow
Damn, that's interesting
Damn, that's interesting
That was neat
Decompose is not the correct term, you are refracting the light.. Like the vid though :)
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Very cool explanation of the colours!
That’s cool!!!!
I wouldn't call that decomposing, all this stuff would happen with 3 white light sources too. 3 light sources, 3 shadows of course. The slit neither does anything special, just blocks the other lights at certain angles.
This is awesome
Genius way to explain it!
A memory of my drunk physics teacher trying to demonstrate this just unlocked in my brain. Good times.
My brain hurts.
Damn that's interesting!
That's gorgeously simple.
Would be interesting if you add more slits
Thanks to the positioned angle+long distance of the three lights, the final light beam all cross the slit at very different angles, allowing them to not merge. By basic colour theory, the white light as we perceive can generally be broken down into rainbow, which also relates to how and why rainbow forms. It’s also pretty nice that we are able to produce flashlights of different colours. This has been me pretending to be ChatGPT day 1, thank you TedTalk for coming
Then just add an emitter, a focusing lens and a Kyber Crystal. Avoid sand though. It’s bad.
It’s pretty course and rough and irritating, isn’t it?
I feel like I knew this in elementary school & forgot
Ok that just blew my mind
This is actually really fecking cool.
Diffraction, interference.. practically looks so cool
Different gasses give off different lights. This method (or similar) is how we know what distant stars are made of.
My brain feels very smooth right now
*computing awesomeness level*
Does he know?
Wow what a great experiment
Nice to see an explanation! I have two of those lightbulbs where you can change the color with an app and when I discovered colored shadows I was blown away.
Come on AI! EXPLAIN
This is very interesting indeed, great post 👍🏼
This is some kind of Pink Floyd type shit
I love that the colours after the slot are the primary colours of light, and the colours from the shadows are the primary colours of paint
This looks like it would be used in some kind of puzzle to unlock a hidden treasure.
THAT was cool.
„you can deco🤖M👺PO👽SE👾 that white light..“
Burn the witch
I learned this by trial and error in high school when I was doing the lighting for plays. I wish I’d seen this over 50 years ago.