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The Weird World in RGB
About this video
Technology Connections explains how RGB light and color work, from hue and saturation to color vision and how objects appear under different lighting. It uses a studio setup with colored lights to demonstrate the effects.
Why it appears in the archive
HN points to it as an accessible explanation of how color and reflected light behave, especially under LED lighting.
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From the Hacker News discussion
This works for direct illumination (eg an LCD screen) but fails for reflected light (eg a light). This video from Technology Connections helps explain [VIDEO]
Read original comment ↗Short answer: No. We (the majority anyway, as some are colourblind) only perceive lightness, reddish, greenish, and bluish. The brain uses the info and effectively synthesises the image in our brains. Long answer: Colour is a very rabbithole topic but Captain Disillusion has a summary of it ( [LINK] ) and Technology Connections has a discussion ( [VIDEO] ).
Read original comment ↗Why would you do that I don't know, but for me personally the reason is that LEDs tend to strobe (sometimes noticeably to peripheral vision) and do not emit a smooth continuous spectrum—unlike incandescent bulbs, they produce a narrow, spiky spectrum[0] and objects in your room may look unnatural as they reflect it[1]; this may be especially bad with some RGB LEDs but fundamentally is a property of all LED lights because physics. [0] [LINK] [1] [VIDEO]
Read original comment ↗