Luqman.saifi
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What is discrete energy levels
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Joinedup
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Discrete means separate or not continuous (different word to discreet)

Discrete energy levels are separate energy levels with nothing in between. example supporting the existence of discrete energy levels would be the emission spectra of gas discharge lamps where you get photons at certain frequencies but not at others.

spectrum of a gas discharge lamp might look like this

Image
rather than a continuous spectrum made of the rainbow colours
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