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submitted 2 months ago by kalkulat@lemmy.world to c/science@lemmy.world

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[–] marcos@lemmy.world 4 points 2 months ago (1 children)

Do they even exist if they don’t move?

No. Or, at least not from our point of view.

They only exist moving at the speed at light. All particles with no rest mass only exist moving at the speed of light.

[–] MonkderVierte@lemmy.ml 1 points 2 months ago* (last edited 2 months ago) (1 children)

So photons do have mass?

[–] pyre@lemmy.world 3 points 2 months ago (1 children)

only as long as they exist

[–] MonkderVierte@lemmy.ml 1 points 2 months ago

Else they don't. We are talking quantum here.