JT! Wrote:I think a keyborad should emit something, but maybe not visable light, maybe micro waves or gamma waves.
Then we can say "this post gave me cancer" literally. Beautiful.
admin89 Wrote:My professor and my book told me exactly the opposite of what you're saying . Red is the most uncomfortable light for your eyes . It's said that green light will not put strain on your eyes . Therefore , you won't lose concentration
Here is a graph of the sensitivity of the three cone types in your eye (S, M, and L) to different frequencies of visible light:
![[Image: Cone-fundamentals-with-srgb-spectrum.svg]](http://upload.wikimedia.org/wikipedia/commons/0/04/Cone-fundamentals-with-srgb-spectrum.svg)
If you combine them you will get the total sensitivity as seen here:
![[Image: Eyesensitivity.svg]](http://upload.wikimedia.org/wikipedia/commons/c/c0/Eyesensitivity.svg)
Notice how green is the most sensitive color because it overlaps two cones both near their peak response points. This is one of the reasons why hunters for example use red lights at night (or at least they should, not all of them do). Your eye isn't very sensitive to the color so your pupils can remain adjusted to the ambient light (dilated for seeing well in darkness in this case). Less shift in lighting also means less eye muscle activity which has the added benefit of inducing less eye strain.
"Normally if given a choice between doing something and nothing, I’d choose to do nothing. But I would do something if it helps someone else do nothing. I’d work all night if it meant nothing got done."
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"I shall be a good politician, even if it kills me. Or if it kills anyone else for that matter. "
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-Ron Swanson
"I shall be a good politician, even if it kills me. Or if it kills anyone else for that matter. "
-Mark Antony