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The photon is the quantum of the electromagnetic four-potential, and therefore the massless bosonic particle associated with the electromagnetic force, commonly also called the "particle of light". Use this tag for questions about the quantum-mechanical understanding of light and/or electromagnetic interactions.

1 vote
2 answers
261 views

If photons are massless, how are they reflected and blocked by something that has mass? Shou...

If photons are massless, how do they get reflected, blocked when something comes in its way? Shouldn't the particle just pass right through any object? …
Shristeerupa's user avatar
13 votes
5 answers
7k views

How do photons have temperature?

So, does it mean that the particles of light (photons) somehow (maybe create friction and) generate the temperature? This makes me ask: Shouldn't massless things also not have temperature? …
Shristeerupa's user avatar