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!Jon Snow!
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Can you explain please!
thank you.
thank you.
!Jon Snow! said:I was thinking of saying something like this, but I was concerned that we might get photons and "light" mixed up. When we say the speed of light in a vacuum is c, we're saying the group velocity of the EM wave in vacuum is c. This is not trivially related to the speed of a photon.
No, according to the theory of relativity, a photon must always travel at the speed of light. It cannot be at rest.
A photon is a massless particle, meaning it has no rest mass. This is why it must travel at the speed of light, as it has no other option due to its massless nature.
Yes, according to the theory of relativity, the speed of light is the same for all photons regardless of their energy or frequency.
No, a photon cannot slow down as it travels at the maximum speed allowed in the universe. However, its frequency and energy can change in certain situations, such as passing through a medium.
Experiments, such as the famous Michelson-Morley experiment, have shown that the speed of light is constant and independent of the observer's frame of reference. This supports the theory that a photon must travel at the speed of light.