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

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

So photons do have mass?

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

only as long as they exist

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

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