The sun emits white light, which is a mixture of light from all frequencies. Instead, it should have emitted a beam of light of the same frequency, as the source is the same?
So, can you please explain why the sun emits light in all frequencies?
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2Have you looked here: @ https://www.sciencefocus.com/science/what-colour-is-the-sun – Brendan Darrer Aug 05 '23 at 14:58
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1Welcome to SE. I do not understand the logic "should have emitted a beam of light of the same frequency, as the source is the same". – Koschi Aug 05 '23 at 16:33
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1Most of the light from the sun is black body radiation from the upper layers of its "atmosphere." – Solomon Slow Aug 05 '23 at 16:49
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1Does this answer your question? Why is the Sun’s emission spectrum shaped like this? – ProfRob Aug 05 '23 at 20:10
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1See also https://physics.stackexchange.com/q/645671/ https://physics.stackexchange.com/q/59213/ https://physics.stackexchange.com/q/167787/ – ProfRob Aug 05 '23 at 20:11
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The light sources are excited atoms subject to violent agitation. That level of agitation exists in a distribution with some atoms being shaken more violently than others. This means the emitted light will exist in a distribution of frequencies given by the blackbody formula.
This is a universal law obeyed by most hot objects (like tungsten filament light bulbs, or the cosmic microwave background for example) in the absence of other effects.
niels nielsen
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"This is a universal law obeyed by all hot objects." A counter-example would be the Sun's corona which certainly doesn't have a blackbody spectrum. – ProfRob Aug 06 '23 at 21:02
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