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submitted 1 month ago by kalkulat@lemmy.world to c/science@lemmy.world

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[–] MonkderVierte@lemmy.ml 1 points 1 month ago (1 children)

So photons only have no mass if they don't move? Do they even exist if they don't move?

[–] marcos@lemmy.world 4 points 1 month 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 1 month ago* (last edited 1 month ago) (1 children)

So photons do have mass?

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

only as long as they exist

[–] MonkderVierte@lemmy.ml 1 points 1 month ago

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