eli5: why do we use red green blue instead of the primary colours for light

Question

i kinda understand the difference between subtractive and addictive colours but i don’t understand why we use green instead of yellow for lights

In: Other

Answer 1

The short answer is that red, green, and blue are the colours the different cones (colour detectors) in our eyes are tuned to.

When we see something in-between red and green, both the red and green cones get triggered. So if we want to fake a colour in-between red and green, we use a bit of each.