Additive vs. Subtractive Light.mp4

additive and subtractive light

[@samwellboy]

I wasn't sure at first, but when I saw the white lab coat, I knew this was for real

[@elysegambino1597]

I use this video EVERY TIME I teach color theory as an artist. So thankful for this beautifully clear, scientific explanation.

[@user4241]

The substractive color mixing part is not correct. The "true" substractive primaries are cyan, magenta, and yellow.

[@LowKey_B]

It’s 3am and at 0:40 I thought you said “Dyson paints” and then thought that was the smoothest transition into a sponsor ever... I need to go to sleep.

[@peggykrull8710]

This was so helpful! Thank you!

[@SaeedAhmed-wl7pb]

very interesting, special thanks!

[@MonkeySpecs301]

Why acrylic paint use RGB as the primary colors and not CYM?

[@milanbarot4164]

Hope youre doing good my man

[@Broooose]

you're not going to eat those candies are you? that white one looks a little past expiration.

[@lostintranslation10]

Understanding color theory in under three minutes :)

[@DannyBoneZz]

So what if you add 2 blues? Same wavelngths are not added?? I don't suppose that green is created? It just adds to the intensity right??

[@umadbro4493]

it will stay the same

[@meganpalmer9843]

To me, the information in the video about the subtractive primaries being red, yellow, and blue from a scientific standpoint seemed off. My impression was that cyan (C), magenta (M), and yellow (Y) were the primary subtractive colors (Not to be confused with the primary additive colors red (R), blue (B), and green (G), like in a phone screen). For example C+M=B because cyan absorbs red light (reflecting blue and green. Think of 1:42 in the video) and magenta absorbs green light (reflecting blue and red), which means that the only light still reflected is blue when the two pigments are mixed. By the same principle, C+Y=G and M+Y=R. What are your thoughts?

[@meganpalmer9843]

I think kzbin.info/www/bejne/qGnIm4eLg9yaitE and kzbin.info/www/bejne/a4uXYmqegpKFd6M explain it better than I can

[@matijas7994]

than how you get blue out of those colours?

[@meganpalmer9843]

@@matijas7994 I imagine it must feel counterintuitive to think of blue as a secondary color when, if you're like me, you learned that it was a primary color in elementary school. It was difficult for me to process too! If you have access to a colored printer, I would recommend trying this, so you can see it for yourself. Look at the ink cartridges. They are labeled M (magenta), C (cyan), Y (yellow), and K/B (key or black). Then print a picture of a blue square, and voila! blue created without any blue pigment, just cyan and magenta. Printers use CMY because they are the true subtractive primary colors, and red, yellow, and blue can't create the whole range of vibrant, saturated hues.

[@matijas7994]

@@meganpalmer9843 well iknow that yellow magenta and cyan are primary colours for printing,but not for painting watch this for more details kzbin.info/www/bejne/qIKQdIyjobClrNU

[@meganpalmer9843]

@@matijas7994 As for how it works, I know there must be many complexities to our perception of color, but here is a simplified summary of the science behind it. First, our eyes have three types of cone cells that detect color: one for green light, one for blue, and one for red. Our brain interprets combinations of signals from these cone cells to create the whole range of colors you and I see (like they demonstrated so well in this video with the light box. Even though there were only three colors of light, we could see more when they were combined). That's why red, blue, and green are the primary additive colors. Now for subtractive color. Instead of adding light to create colors, we're subtracting which wavelengths of light are reflected. Magenta absorbs (or subtracts) green light, so only blue and red are reflected. In contrast, cyan absorbs (or subtracts) red light, so only blue and green light are reflected. When you combine them, the magenta absorbs green and the cyan absorbs red, so only blue light is reflected. This excites the blue cones in your eyes, and you see blue! Let me know if that helps or if anything is confusing! :D

[@grabern]

0:59 Bad information. It is cyan and magenta that create green. A substance cannot reflect yellow but reflect red and green together. The subtractive primaries are not red, yellow and blue.

[@grabern]

Sorry, *cyan and yellow create green.

[@masacatior]

LOLFlyingPotatoes Red and green light together gives off a yellow perception, that's how additive colors work, and how you see yellow color watching TV, or using smartphones even though there's absolutely no yellow light coming off them. Sun light contains all spectrum of light, digital monitors only red, green and blue.

[@jamessmith65536]

@@grabern Right, in CMY, yellow and blue will make dark yellow, not dark green (100% cyan, 50% magenta, 100% yellow) because yellow is a 100% primary color while blue is a mixture of 50% magenta and 50% cyan, therefore, dark yellow (50% cyan, 50% magenta, 100% yellow) is created. Try that here: csfieldguide.org.nz/en/interactives/cmy-mixer/index.html

[@jamessmith65536]

@@masacatior It just means that his blue has a cyan in it.

[@sophiak642]

LOLFlyingPotatoes you’re wrong it doesn’t. That ain’t how It works

[@Asal181]

Great video brother!

[@jessnopeniss561]

What about cyan + magenta + yellow in LIGHT?

[@bordeanudarius2315]

1:53 but in light green+red is amber, am i wrong?

[@parassutar1157]

Red + Green = Yellow

[@grabern]

M&M, NOT EMINEM!!!

[@Lidar957]

Eminem suck!!!

[@Misana]

it TOTALLY does.. like... oxidation setting in.. hahaaha.

[@8yuhg]

I dont understand this at all

[@kyleyuez]

Keithley's class be like

[@trunghoang8783]

?? it's not paint class.