Purple is a combination of wavelengths from opposite extremes of the spectrum, which technically deosn’t make any sense, but ...

averaging out how many of which type of cones to kick in to let us see a color like chartreuse or burnt sienna or whatever. The problem is, the shortest wavelengths our cones can detect in the ...

Purple is not included in this list, even though the term 'violet' is typically associated with the color purple. In this case, violet refers to the shortest wavelengths of light on the spectrum ...

it is completely invisible in the shortest wavelengths images on the left. Note that the colors are “false”; the images merely shows where the light is seen.

The problem with purple is that it isn’t supposed to be possible to create a color from wavelengths on opposite ends of the spectrum. The shortest wavelength detection made by your S cones ...