Timeline for How does a wave become a color?
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| May 2, 2019 at 16:27 | comment | added | jeffB | You're confusing additive and subtractive color here. If you add yellow and blue light, you'll perceive the result as white -- your eye sees yellow as "red plus green ", and so it sees yellow + blue as "red + green + blue" = white. This is in fact how most "white" LEDs work; they contain a blue emitter and a phosphor that fluoresces yellow under blue illumination. | |
| Apr 30, 2019 at 12:52 | history | answered | nasu | CC BY-SA 4.0 |