Why do computers use RGB for colors, and not RBY?

Computer screens use red, green, and blue RGB as pixel colors, but why? They told us in kindergarten that RBY were the primary colors...

#shorts #design #compsci

[Fireship]

It's just a joke, your teachers would never lie to you! Subscribe if you like code!

[kaylenvee]

Technically none of them are wrong, the tricolours are just for different things. Like with paint, you're dealing with pigments, and the primary colours for those are red, yellow and blue. For light, it's red, green and blue, and for printer ink, it's cyan, magenta and yellow. The primary colours are different for different circumstances and materials.

[MAP]

And also worth noting that in print, Cyan + Magenta = Blue, Cyan + Yellow = Green, Magenta + Yellow = Red. Vice versa for additive pixels. The primaries are the secondaries in the other system.

[Myne]

The Isaac Newton Apple story is honestly a bit more interesting than “he saw something fall, let’s invent gravity.” It goes that Newton was under the apple tree on a WINDY day, and when an apple fell, he observed that it moved sideways AS it fell, leading him to hypothesize that, if something fell “sideways” fast enough, that it could outpace the downward pulling force and start circling the planet forever.

[crinna]

The reason why red, blue and yellow are introduced as the primary colors is that they are the primary colors of classical paint pallets. CMYK are pure primary colors but those colors were not achievable with pigments in classical painting. Both the cyan and magenta from CMYK were invented in the 1800s but color theory education precedes this.

[kandycan]

In computer graphics we studied that there are 2 methods: 1. Additive (RGB) 2. Subtractive. (CMYK).
Additive methods are used for displays and CMY for printing colors on paper.

[thehien]

I was once in a "last standing wins" competition where there was a question relating to primary colors. I got knocked out because I answered "red, green and blue".

[fallen]

I was taught in my 2d art class that it was red green blue. As a Computer technician, I have the right to trust only in RGB. RGB will save us all

[macs]

This has been a doubt of mine for so long, thank you!

[naughtykid]

Conclusion: Don't trust your school.
Take a fireship course

[GrumpyTyer]

Explained the difference between additive and subtractive light, which is the most important thing in this topic in my opinion. Good job

[t-mag]

One of my favourite things I remember doing back when my parents still owned one of those thick ass TVs was getting my eye so close to the screen I could actually SEE the individual stripes of red, green and blue. I found it stupidly satisfying to be able to see that all colours on the TV comes from just 3 colours.

[guilherme-freire]

Whaaat? My school taught me colors as RBG, first time that I saw this RBY thing. ( I am brazilian btw )

[AbhishekThakur-wlpl]

I knew my whole childhood was a big lie.

[eeHMFIC]

Newton figured out that white light was composed of seven colors of light, like on a Newton Disc. It wasn't until James Clerk Maxwell that we learned that RGB was all you needed to perceive white.

[someone-ylxc]

It’s different situations, in painting and stuff red blue and yellow are the primaries because they can’t be mixed from the other colours while yes in other cases cmy and rgb are the bases

[tennicktenstyl]

Reason for Red, Blue and Yellow is Red and Blue look similar enough to Magenta and Cyan that no one cared if those were the correct hues. Kids don't often know what Magenta and Cyan are. Also Red and Blue are easier to find in paints.

[nitin-code-comedy]

When your normal videos are 2 mins and shorts are 1 min long

[drewishaf]

There are 2 sets of "primary colors" based on light or pigment. Adding all the colors of light results in the light being white. But adding all the colors of pigment results in the pigment being black. With pigments, you're actually adding colors that absorb specific wavelengths of light. If you add colors that absorb all light wavelengths, the result is black. But when you see light, you're seeing the color of the light itself (which is a portion of white light.) So when you add all the wavelengths of light, the result is light which is considered white.

[mangana]

I was taught the cyan magenta and yellow, so it's weird when others say that red is a primary 🤔