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by retroflexzy 131 days ago
Back in my youth, after the Internet became common but before Wikipedia, I tried to discover the answer to this and came away disappointed again and again. Every article I could find simply stated "because light scattering", and barely much more.

How does scattering work? Why does light scatter? _What does scattering even mean in the context of light?_
1 comments
erikdkennedy 131 days ago
Yes! This is exactly why I wrote this article :)

Any other questions give you the same disappointment?

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beders 130 days ago
How can light "bounce off" something if it doesn't have mass?
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1718627440 130 days ago
https://en.wikipedia.org/wiki/Huygens%E2%80%93Fresnel_princi...

The light "beam" we perceive is the result of infinite circular waves. The points were the light is not are points where they cancel each other out. We had that as part of the school curriculum, do you not have that, or did you forget?

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tim333 130 days ago
The rest mass is zero but photons have momentum when moving.
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