Generator
Several sources on one scale
planck, triphosphor, led, each normalised to its own peak and drawn on shared axes with the colour each produces beside it. Every one of these is sold as white light and every one is ordinarily described that way; what they have in common is a chromaticity, and very little else.
Drawn at its defaults, in real light sources.
It reads 3 options and
no others: which, obs, labels.
Called by 2 essays
the blast radius of changing it
What light is
A lamp is not a blackbody
A fluorescent tube puts a third of its light into four mercury lines. A white LED is a blue spike with a hole beside it. Both are sold by a colour temperature, and a colour temperature says nothing about either.
What light isA screen is a poor lamp
A display's white is a light. Shone on a surface it renders colour worse than a fluorescent tube — and the wider the gamut, the worse it gets, because the narrow primaries that buy a large triangle are exactly the ones that leave holes in the spectrum.