Questions tagged [visible-light]
Questions related to the perception and measurement of light (primarily in the visible range), its mathematical description, the reproduction of colors by different means, color combinations, etc. Please use the tag [electromagnetic-radiation] if you want to refer to the general form of light.
5 questions from the last 30 days
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Color of very high temperature metal undergoing fission, assuming it stays intact?
In the case of a piece of plutonium heated to a million degrees, what would be its color? At low temperature it should glow red, but what about at higher temperatures if it stays briefly intact?
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Why is a rainbow continuous if atomic energy levels (and emission spectra) are quantized?
From NASA:
Continuous Spectrum: A continuous spectrum contains all wavelengths of light in a certain range. Hot, dense light sources like stars, for example, emit a nearly continuous spectrum of ...
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By universe expanding, does amplitude also increase?
I learned that universe expanding stretches light wave itself and it makes wavelength of light wave increase, which is 'cosmological red shift'.
But if this is true, why not amplitude? Does it ...
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What is the temperature of light?
What is the temperature of light itself - the sunlight on your skin, for example, if you’re swimming in a pool and underwater?
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Is photon budget a bad word?
In optics the word "photon budget" is often used to indicate the amount of photons that can be detected when forming an image, often when either the exposure time or intensity are limited. ...
