this post was submitted on 05 Nov 2023
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this aint some creep cam is it? im at a five star hotel rn wtf

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[โ€“] [email protected] 39 points 1 year ago* (last edited 1 year ago) (12 children)

It's a night light, so if you go to the bathroom in the dark you don't miss.

The human eye is the most sensitive to green light, so the least amount of light is needed for you to be able to see things. Green lights are excellent for night lights, due to this reason. You don't lose your night vision, and you see more detail.

[โ€“] [email protected] 12 points 1 year ago (6 children)

Humans have best retina stimulation in blue light, not green light.

The real reason I suspect the light happens to be green is that green phosphor is relatively inexpensive.

Blue light could be disruptive to circadian rhythm while green light is somewhat less so, but I guarantee this was not part of the calculus here. It is just being thrifty. Circadian rhythm benefits are just a happy accident.

[โ€“] [email protected] 9 points 1 year ago (1 children)

Wut? Blue? Are you sure about that? Afaik the peak is around 555nm, yellow green. Why do you think we have "high visibility yellow" vests and not "high visibility blue?"

IIRC 555nm (or whereabouts) stimulates the L and M cones simultaneously.

[โ€“] [email protected] 3 points 1 year ago

Light vs dark adapted. In bright light, the best wavelength is longer.

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