Just to fix something said in that Vsauce video, the yellow light coming off of a lemon is not monochromatic either. Either way, we're seeing a combination of different wavelengths.
Great video! I have long understood the interesting perceptual sameness of pure yellow vs composite yellow light. We must always be aware that our eyes and our screens are RGB devices. It was very cool seeing you use the prism and the printed paper to find out what frequencies of light were actually present. Excellent video on this subject.
At 4:10 I can already tell this experiment is going to blow my mind. The Actionlab's experiments always seem so boring in the title but always turn out to be awesome in the end.
@@muneerrawagah8619 Not gonna bother looking it up but the on board driver might just send any yellow colors from the rgb mix to the yellow pixel regardless showing you in the end yellow light whether it came from a mix or not. Considering yellow pixels isn't very popular I'm sure it would have to be implemented for it to make any sense since there would be hardly any content that would actually utilize that technology making the main selling point of that tv pointless.
Thank you for the video! A few of the aircraft hangers I have worked in over the years have yellow lights I'm assuming like your low pressure sodium lamp. Working in there for long periods of time is really a mind trip.
Yes. Most older industrialized buildings use sodium lights. Part of their appeal was longevity so replacement takes a while. (Ain't broke yet, leave it be)
@@andiward7068 yeah. Working in them for an extended period of time then coming outside your brain gets overloaded from all the color and detail you can suddenly see.
What impresses me more than this video is that you always seem to know what is going to be unique and fascinating. Never seen a “meh” video from you. Bravo.
Well, as for Color magic, I faced with it about a month ago, when I was changing colors of my LED lights in a dark room. Some Light colors changed my room a bit (instead Brown - Black, or yellow - White), but one color made my room absolutely gray. That was weird.
I live in Dunedin, New Zealand, and in the Otago Museum there is this fun and interactive sciencey sort of space where a bunch of different activities are. Theres a wee area that has this yellow light and I never knew how or why it worked but it absolutely blew my mind when I first went in there and didn't know what it was, only to find out that this grey object I was looking at was actually purple and green. And now because if this video I understand. Something I didn't think anything of, but you answered it. That's what I love about your videos. They are random yet not at all. Love your work 👌🏻
this is great, helping me to catch up on this colour stuff. I was born in '59, back when things were still black and white and colour hadn't been invented.
Good video. Would’ve been nice if you talked about color constancy, and what happens to our perception of yellow under a bright illuminant and a dark illuminant...we perceive it differently. And what is the best chromatic background for perceiving yellow light? Another interesting topic is brown light..can we see a pure brown light at night or in total darkness?
This is one of the challenges with lighting, for example indoor home lighting. An LED intended to emulate an incandescent bulb may produce the same overall perceived color for our eyes, but the way that light is reflected or absorbed from other objects will be different. It's not necessarily some obvious thing, like, "That box of tissues over there looked slightly greener with the old light bulb," but we'll have a vague sense that something isn't right. Of course, LED bulbs also often have the flicker issue.
As an artist, I needed to become rather aware of those color effects pretty early. I used to draw with colored pencils and used a lot of red, orange and yellow in lovely gradients. I could perfectly distinguish them in dailight, but with your common house lighting, which was incandescant bulbs back in the day, it was not that clear anymore, because those bulbs are pretty yellow, if you remember. And also my scans were looking pretty bad, because my scanner also used some technology, that could not very well distinguish colors with a lot of red in it. Today I'd get high quality gadgets for this, but I have turned fully digital since then.
If there are two different yellows, can you try out blue+REAL yellow light? Since your sodium vapour lamp emits only yellow light and not red and green light, can you try how yellow+blue light results in instead of (red+green)+blue light?
@@gotautas8283 Tell those flat earthers to take some nitroglycerin, mix it with some kieselguhr, flatten it into a pancake, and light it on fire. Actually don't you could get into legal trouble for that
The Sharp Quatron is the TV that has yellow pixels, but the camera that shot the video still only has three colours. So it is actually combining the data from the camera's red and green pixels and displaying them with the yellow pixel on that TV.
Next video: difference between light and light Next video: difference between seeing and seeing Next video difference between seeing light in a color and the same color
Fahad Ahmed but red and green does not make yellow. if you look at a color wheel all contrast colors make brown. basically, you're mixing the 3 primary colors.
The vast majority of printers, especially consumer printers, use CMYK ink (cyan, magenta, yellow, black), doing subtractive mixing of secondary colors.
@@SonicYM2612 CMY still works the same as RYB (how I listed). it's just cyan and magenta are closer pigments to yellow make it easier to mix equal % in the real world. also, red and blue usually have more pigments than yellow... stating colors would be darker so you have less range of colors. in both CMY and RYB Red and Green would make brown.
You can get yellow LEDs that are really yellow. Obviously not the RGB kind popular in lighting, but they were able to make any colour between infra-red and green for quite a long time, even before the efficient blue LED was invented in the 1990s. For anyone wanting to play with this, maybe a kit would be nice? LEDs have narrow wavebands, not quite as pure as low-pressure sodium, but pretty accurate, in all sorts of colours. Some are just blue + a phosphor, like white LEDs are. But a kit with a battery, a few LEDs with resistors attached (or just 5V LEDs which include current limiting), some colour cards printed in real Pantone colours (you'd have to experiment to find out the actual spectrum of these), and either a small glass prism or maybe cheap plastic diffraction grating. Maybe chuck in a laser pointer too, though only a very low-power one,
When I was at a concert, there were some expensive lights, that I know had a red, green, blue, uv, and amber diods. When only the amber diods were lit, the whole arena appeared amber.
great video the question is , is there pure white light like that sodium low pressure light ? and if so , then it wont give all waves of light when using prism ?
I think that was a mistake considering the whole time he was saying it made yellow lol, what he meant to say was you can’t see a reddish cyan, or a greenish magenta
@The Action Lab Nice! I did something similar using *soap bubbles.* I used a red LED (monochromatic) and shined it on a soap bubble with all the lights turned off. All I saw were bands of red and dark. However, when I turned on my phone screen to *only* red, I got red and some blue in the soap bubble as well. There may have been a little bit of green too. This shows that the red pixels on our screens aren't actually monochromatic, and actually have a broad spectrum that goes into some other colors. The red would look richer if it were actually monochromatic.
Hello sir, I want to know that light do not have any mass in it then also it is bent by gravity(black hole) . Why? Is this not contradictory to Newton's gravitation law. Plz tell I am curious to know :)
First- Newton's laws are not always applicable Second - According to Einstien's theory of general relativity gravity is curvature and bends space time around itself so energy is also bent in that curvature .... Simple
@@animeshsah5843 1) plz tell where Newton's law is not applicable (2-3 eg.) 2) then why light do not bend near sun or earth or any other place except black hole It is just my queries (plz don't take it as argument)
@@AJF1atharv Newton' s laws are kind of approximation. They are applicable in our day to day life becayse we dont encounter with microscopic or macroscopic thing in our real life so we are just fine applying them in oir real world but this is not the case in quantum mechanics or when relativity is applied . Also light bends a little near sun and earth but it it not quite significant. YOU ARE FREE TOBASK IF YOU HAVE MORE QUERIES
What about those rare individuals with tetrachromacy? How would their perception of the red-green blend differ, since they would have cones that pick up a yellow peak? How would this different input affect the output yielded by the equations in the yellow-blue and magenta-green cells?
Amazing video as usual. I have a question, (And if you shine a blue light and a orange light)? -yellow? and also, if you shine a green light and a orange light the result would be yellow?
That is the idea behond the DLP video projectors that have a chromatic wheel that include a yellow segment. I was never able to use a dlp projector because I can't stand the temporal gradients with my peripheral vision, I prefer rgb lcd. But the intent was to produce much better sunsets and skin color by having a dedicated yellow. And for some people it worked. Today High CRI leds have dropped the idea to combine white and yellow to produce a better full spectrum white. The best high cri leds are now with a single emitter, and the prism gives a beautiful gradient, not as perfect as the one from the sun, but with very little variation. Much better than high cri fluorescent lights. For printing or meat or vegetable shops this is important to have nice light.
I'm learning so much on this channel that I never knew I wanted to learn.
Me too, this dude is a youtube treasure!
Yellow is not yellow. *VSauce music intensifies*
vsauce got music?
@Tri-green-angles green triangles the y is in the middle of the sentence...
Just to fix something said in that Vsauce video, the yellow light coming off of a lemon is not monochromatic either. Either way, we're seeing a combination of different wavelengths.
Can you time travel with color: VSauce 3 music intensifies in Spanish.
Or is it?
I love how your videos is like stupid questions but you always have a scientific answer to it.
Great video! I have long understood the interesting perceptual sameness of pure yellow vs composite yellow light. We must always be aware that our eyes and our screens are RGB devices. It was very cool seeing you use the prism and the printed paper to find out what frequencies of light were actually present. Excellent video on this subject.
Me when I read a scientific answer to a question:
*ah shit here we go again*
At 4:10 I can already tell this experiment is going to blow my mind. The Actionlab's experiments always seem so boring in the title but always turn out to be awesome in the end.
I was really expecting that glow in the dark spider to suddenly appear 😁😁.
lol
What spied?
@@shifa-8423 delete ur reply
pl
@@gan1 lmao
Lol
Action lab: What's the difference between yellow and yellow?
Me: *Visible confusion*
lol me too
Haha ... visible...
Do you know about additive and subtractive color?
1985: we'll have flying cars for everyone by 2015
2019: what's the difference between yellow and yellow?
LOL
Matrix: Do you want the Red pill, or the Blue pill?
The Action Lab: Your life's a lie. 😂
A Cake it is
🌾
Yellow and Yellow?
IM sure The other one has a question Mark but The 1st one doesnt have
StickBro Anims 10000000 IQ
👏👏👏👏👏👏
*Harward University wants to know your Location*
6:48 - "The entire time that you've been watching this video, you never actually saw a pure yellow light."
What if I'm watching on a Quattron?
I think it doesn't matter because it is shot in RGB
correct me if Im wrong
@@muneerrawagah8619 you're not allowed to be that smart
What’s a Quattron next?
@@muneerrawagah8619 Not gonna bother looking it up but the on board driver might just send any yellow colors from the rgb mix to the yellow pixel regardless showing you in the end yellow light whether it came from a mix or not. Considering yellow pixels isn't very popular I'm sure it would have to be implemented for it to make any sense since there would be hardly any content that would actually utilize that technology making the main selling point of that tv pointless.
@@breathless3038 What if they're smart enough to know that you're wrong? What of your trolling then?
Thank you for the video! A few of the aircraft hangers I have worked in over the years have yellow lights I'm assuming like your low pressure sodium lamp. Working in there for long periods of time is really a mind trip.
Yes. Most older industrialized buildings use sodium lights. Part of their appeal was longevity so replacement takes a while. (Ain't broke yet, leave it be)
@@andiward7068 yeah. Working in them for an extended period of time then coming outside your brain gets overloaded from all the color and detail you can suddenly see.
This was really good, man. One of the best vids in the action lab series. I'm not sure why this is so fascinating to me!
What impresses me more than this video is that you always seem to know what is going to be unique and fascinating. Never seen a “meh” video from you. Bravo.
Well, as for Color magic, I faced with it about a month ago, when I was changing colors of my LED lights in a dark room. Some Light colors changed my room a bit (instead Brown - Black, or yellow - White), but one color made my room absolutely gray. That was weird.
Funny
I love your videos. Thank you for putting our great content.
me too that's my boy
ActionLab: "What's the difference between yellow and yellow?"
Me: *YES*
Edit: There's a yellow riddle out there...
What does yes mean?
@@a.yashwanth
It means that yellow can mellow with fellow yellow jello...
@@mr.knightthedetective7435 wtf
@@a.yashwanth It means, that yellow is green, and green is blue
@@leucoplayz8323 I never thought a 'yes' word has that meaning.
*learning something new everytime*
Thank you The Action Lab
I live in Dunedin, New Zealand, and in the Otago Museum there is this fun and interactive sciencey sort of space where a bunch of different activities are. Theres a wee area that has this yellow light and I never knew how or why it worked but it absolutely blew my mind when I first went in there and didn't know what it was, only to find out that this grey object I was looking at was actually purple and green. And now because if this video I understand. Something I didn't think anything of, but you answered it. That's what I love about your videos. They are random yet not at all. Love your work 👌🏻
your experiments never cease to amaze me
Flawless as always, watching this channel is truly worth it always.
Ones a colour the over is what my dad says when he answers the phone...
Underappreciated comment
Jadelyn Cho I can only try... :(
Y'ello?
this is great, helping me to catch up on this colour stuff. I was born in '59, back when things were still black and white and colour hadn't been invented.
This is an eye opening video!
Good video. Would’ve been nice if you talked about color constancy, and what happens to our perception of yellow under a bright illuminant and a dark illuminant...we perceive it differently. And what is the best chromatic background for perceiving yellow light? Another interesting topic is brown light..can we see a pure brown light at night or in total darkness?
That prism explaination rang in my mind in beginning. And you included the same O:-)
lol
Action Lab:- What is the difference between Yellow and Yellow?
Me:- OK but you should yell low.
lol
*slow clap*
so bad its good
@@TheActionLab hi
Dabum bum tss
great video
im glad i was wrong about future of this channel, hope the pressure of finding new content isnt too hard.
science will always a new content for this channel
There's plenty of new content he could do! I myself have a number of ideas he could try.
@@DANGJOS then please write them down here as he listened to one of the other comments and made a video on that.
@@SatishYadav-fo8yt It's pretty late now. I doubt he's still reading comments on this video.
This is something I've wondered about for awhile now; I'm so glad this video was recommended to me!
Amazing video and also amazing science
My favorite episode. So well illustrated🐚
You are cool! Keep doing whatever you do!
Great work getting into opponent process, getting closer to cracking the theory of colors.
Goethe! Do his experiments!!
This is one of the challenges with lighting, for example indoor home lighting. An LED intended to emulate an incandescent bulb may produce the same overall perceived color for our eyes, but the way that light is reflected or absorbed from other objects will be different. It's not necessarily some obvious thing, like, "That box of tissues over there looked slightly greener with the old light bulb," but we'll have a vague sense that something isn't right. Of course, LED bulbs also often have the flicker issue.
Fascinating!
As an artist, I needed to become rather aware of those color effects pretty early. I used to draw with colored pencils and used a lot of red, orange and yellow in lovely gradients. I could perfectly distinguish them in dailight, but with your common house lighting, which was incandescant bulbs back in the day, it was not that clear anymore, because those bulbs are pretty yellow, if you remember.
And also my scans were looking pretty bad, because my scanner also used some technology, that could not very well distinguish colors with a lot of red in it. Today I'd get high quality gadgets for this, but I have turned fully digital since then.
What a lovely way to teach colour perception!
This is something I never thought about. Good work whoever you are!
Action Lab: "what's the difference between yellow and yellow?"
Me: "did I miss something when I was learning colors at 5?"
great video, and i'm learning a lot from the channel , keep up the good work, thank you.
If there are two different yellows, can you try out blue+REAL yellow light? Since your sodium vapour lamp emits only yellow light and not red and green light, can you try how yellow+blue light results in instead of (red+green)+blue light?
Amazing work, sir. Thank You so much
Me:both are the same
Action lab: *well yes but actually no*
This is the best explanation of this ive seen
I had known idea there was this subject that i was so interested in. Really cool thanks
1900: In the future people will be so smart that they will know everything in the universe
2019: *WHAT IS THE DIFFERENCE BETWEEN YELLOW AND YELLOW*
*earth explodes*
@@NicoA223 : *earth explodes*
IDIOTS (also known as flat earthers): *TECHNICALLY FLAT THINGS CAN'T EXPLODE*
@@gotautas8283 Tell those flat earthers to take some nitroglycerin, mix it with some kieselguhr, flatten it into a pancake, and light it on fire.
Actually don't you could get into legal trouble for that
@@gotautas8283 false earthers explode
Wow, this is really fascinating! 👍🏼😃
90% talks about yellow
8% talks about other colours
2% talks about global crisis
100% talks about global crisis
@@lingesh1949 Roasted! :D
0% talks about fight club
Never wondered about yellow as pure color and yellow as r/g mix.. but now i've an answer.. very interesting video!
And Another reason to love you channel recorded and filed.
You rock, feels good that I subscribed.
Quick question: Is it possible to have a colourless object? Give an example of one.
Black objects are colorless. Black is literally not a color but the absence of color. Look it up if you don't believe me.
YAMMAS How about glass
There’s a tv that advertised RGBY screens. It should work as the sodium lamp, i wanna see it in action
The Sharp Quatron is the TV that has yellow pixels, but the camera that shot the video still only has three colours. So it is actually combining the data from the camera's red and green pixels and displaying them with the yellow pixel on that TV.
This is pretty fascinating.
This video turned out to be way more interesting than I first thought!
Wow!! That's really cool! I'm gonna go try this on my yellow lights right now!
Next video: difference between light and light
Next video: difference between seeing and seeing
Next video difference between seeing light in a color and the same color
Hm never thought about this, great video!
Very informative video...
What is the full set of wavelengths of visible light for which we know how to build a monochromatic light source of that wavelength?
I love this man 💛
loved the content!
So the cells in my eyes are better at math than me..?
Josh Andromidas yes.
Great video!
Very nice! Thank you!
OMG I LOVE Sodium vapor lamps!
They like black and strobe lites are so awesome and intense
Excellent video
1980:We will have flying car in the future.
2019:What is the difference between Yellow and Yellow?
Is that the spectrum printed on a paper is YELLOW? Or it's just a combination of Red and Green ink ?
Fahad Ahmed I see we have a true intellectual here
Fahad Ahmed
but red and green does not make yellow. if you look at a color wheel all contrast colors make brown. basically, you're mixing the 3 primary colors.
The vast majority of printers, especially consumer printers, use CMYK ink (cyan, magenta, yellow, black), doing subtractive mixing of secondary colors.
@@SonicYM2612 CMY still works the same as RYB (how I listed). it's just cyan and magenta are closer pigments to yellow make it easier to mix equal % in the real world. also, red and blue usually have more pigments than yellow... stating colors would be darker so you have less range of colors. in both CMY and RYB Red and Green would make brown.
@@gatorage850 oh my comment was more in response to the op, since there's a yellow ink it would directly print yellow on the paper.
2:46 I can clearly see the italian flag on the paper, great video btw
didn’t get it but still watching it
Cleaver
Initially i thought how are you going to show pure yellow frequency on video. But you used cleaver method to show difference. Wow!!!!
Wow. Good to know these.
You are a very very intelligent man
I love the way this guy thinks and the experiments he chooses. Just when I think I will be bored with his video, I'm interested.
I will like and like this video and video
*This is not yellow ⭐*
*This is not red 💋*
*These are not words*
*Your life is not life*
Very nice all the best
It's a useful video for artists
One is a color and the other is how a dad answers a phone call. YELLOW!!!
This should've came out on fathers day
Wow! That is awesome!
You can get yellow LEDs that are really yellow. Obviously not the RGB kind popular in lighting, but they were able to make any colour between infra-red and green for quite a long time, even before the efficient blue LED was invented in the 1990s.
For anyone wanting to play with this, maybe a kit would be nice? LEDs have narrow wavebands, not quite as pure as low-pressure sodium, but pretty accurate, in all sorts of colours. Some are just blue + a phosphor, like white LEDs are.
But a kit with a battery, a few LEDs with resistors attached (or just 5V LEDs which include current limiting), some colour cards printed in real Pantone colours (you'd have to experiment to find out the actual spectrum of these), and either a small glass prism or maybe cheap plastic diffraction grating. Maybe chuck in a laser pointer too, though only a very low-power one,
You deserve a medal
When I was at a concert, there were some expensive lights, that I know had a red, green, blue, uv, and amber diods. When only the amber diods were lit, the whole arena appeared amber.
great video
the question is , is there pure white light like that sodium low pressure light ?
and if so , then it wont give all waves of light when using prism ?
xDoluxor white light *IS ALL the colors, mixed!*
Covered in "Brightest white vs Vanta black"
I know that
but here proven that there is yellow itself and not mix
how about white 🤔
“You’ll never see a reddish green”
Then explain red pearlescent on metallic green paint in GTA V 🤔
I think that was a mistake considering the whole time he was saying it made yellow lol, what he meant to say was you can’t see a reddish cyan, or a greenish magenta
@The Action Lab
Nice! I did something similar using *soap bubbles.* I used a red LED (monochromatic) and shined it on a soap bubble with all the lights turned off. All I saw were bands of red and dark. However, when I turned on my phone screen to *only* red, I got red and some blue in the soap bubble as well. There may have been a little bit of green too. This shows that the red pixels on our screens aren't actually monochromatic, and actually have a broad spectrum that goes into some other colors.
The red would look richer if it were actually monochromatic.
what if you did the same experiment with only black
@@groszak1 What?? Black is nothing. There would be no light.
@@DANGJOS My point is, standard LCD displays emit some of the RGB light even when displaying black.
Nice video!
This is a profound question. Even a troubling question. One that may have no answer.
Omg. Today i understood why the screens use rgb sensors
That aren't sensors lol😂😂😂😂😂🤦♂️😂
@Jon Do I hope English isnt your first language €-=
Oh wow just scurried back here to find a deleted comment and the fact that... jon. Hope. English. *_🤔_*
Wow ... Really amazing
Wow! That's pretty interesting.
Color blind people: Is it some kind of peasant joke, that I am too rich to understand?
Hello sir, I want to know that light do not have any mass in it then also it is bent by gravity(black hole) . Why?
Is this not contradictory to Newton's gravitation law.
Plz tell I am curious to know :)
First- Newton's laws are not always applicable
Second - According to Einstien's theory of general relativity gravity is curvature and bends space time around itself so energy is also bent in that curvature ....
Simple
@@animeshsah5843 1) plz tell where Newton's law is not applicable (2-3 eg.)
2) then why light do not bend near sun or earth or any other place except black hole
It is just my queries (plz don't take it as argument)
@@AJF1atharv Newton' s laws are kind of approximation. They are applicable in our day to day life becayse we dont encounter with microscopic or macroscopic thing in our real life so we are just fine applying them in oir real world but this is not the case in quantum mechanics or when relativity is applied .
Also light bends a little near sun and earth but it it not quite significant.
YOU ARE FREE TOBASK IF YOU HAVE MORE QUERIES
Fascinating. Is it possible to make clothinf with a color outside of the visible wavelengths?
Wow, I thought I knew all there is to know about light. Amazing!
And then a light went on in your head
What about those rare individuals with tetrachromacy? How would their perception of the red-green blend differ, since they would have cones that pick up a yellow peak? How would this different input affect the output yielded by the equations in the yellow-blue and magenta-green cells?
Amazing video as usual. I have a question, (And if you shine a blue light and a orange light)? -yellow?
and also, if you shine a green light and a orange light the result would be yellow?
INTERESTING
That is the idea behond the DLP video projectors that have a chromatic wheel that include a yellow segment. I was never able to use a dlp projector because I can't stand the temporal gradients with my peripheral vision, I prefer rgb lcd. But the intent was to produce much better sunsets and skin color by having a dedicated yellow. And for some people it worked. Today High CRI leds have dropped the idea to combine white and yellow to produce a better full spectrum white. The best high cri leds are now with a single emitter, and the prism gives a beautiful gradient, not as perfect as the one from the sun, but with very little variation. Much better than high cri fluorescent lights. For printing or meat or vegetable shops this is important to have nice light.
How did you print that spectrum you used for testing? It can't be printed on standard CMYK printer, right?