Why is light visible? What makes light visible, but does not make sound, radio waves, microwaves, and so many other things not visible? How is a form of energy visible like it is matter?

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Zach Sat Dec 17 02:26:59 2022 No.15058995 [Reply] [Original]

Why is light visible? What makes light visible, but does not make sound, radio waves, microwaves, and so many other things not visible? How is a form of energy visible like it is matter?

Anonymous Sat Dec 17 02:33:31 2022 No.15059000

>>15058995
Visible light is just one tiny portion of a much larger range of electromagnetic rays.
The rays with wavelengths longer than about 1 µm have energy too low to stimulate the pigments in your retina. Those with wavelengths much shorter than 1 µm either get absorbed by the lens/cornea, or they actually pass through all the tissue including the retina without being noticed.
Of course it's not really 1 µm—it's about 380 nm to 760 nm.

>>	Anonymous Sat Dec 17 02:35:49 2022 No.15059004 >>15058995 Because our eyes evolved to detect it optimally.

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