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To expand on your point, retinas talk a limited number of overlapping spectral responses. That's why we can have an essentially identical perception of spectral
by mhalle 9y ago
To expand on your point, retinas talk a limited number of overlapping spectral responses. That's why we can have an essentially identical perception of spectral yellow and a mix of red and green light.
- kmill 9y agoTo temper your point just a bit, even though yellow light and red+green light look the same when viewed directly, you can still tell the difference. For instance, in the way the light reflects off different materials, or by chromatic aberration with corrective lenses. This is why R+G+B LED lighting is not good enough for illumination and why some better bulbs instead use UV LED + phosphors.