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this aint some creep cam is it? im at a five star hotel rn wtf
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this post was submitted on 05 Nov 2023
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Asklemmy
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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.
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.
When fully light-adapted, the human eye features a wavelength response from around 400 to 700 nanometers, with a peak sensitivity at 555 nanometers (in the green region of the visible light spectrum). The dark-adapted eye responds to a lower range of wavelengths between 380 and 650 nanometers, with the peak occurring at 507 nanometers. source
From that source:
So I guess either blue or green leds are good for this application, and green much cheaper…
I will just say that the recent video from Veritasium about night vision goggles does indeed say that you see better the blue light in the dark rather than the green.
And that's why high end military grade night vision goggles are in the blue spectrum.
Here is an alternative Piped link(s):
Veritasium about night vision goggles
Piped is a privacy-respecting open-source alternative frontend to YouTube.
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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.
Light vs dark adapted. In bright light, the best wavelength is longer.
is this a serious answer or
You tell me. You're in the room. Is there enough light from that green light to navigate safely at night?
It’s been 3 hours. OP has definitely fallen into the toilet while checking if there is enough light.
If he starts seeing babies crawling on the ceiling, then it's time to quit.
This is such a cliffhanger. I need to know, is it good enough to see or not?