Does an object achieve ∞ mass or 0 mass at the speed of light?


by Remon
Tags: , achieve, infinity, light, mass, object, photon, relativity
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Dec12-13, 04:46 PM
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Quote Quote by phinds View Post
A different situation, but one that might help you understand things better is this: A photon created in the core of our sun takes about 100,000 years to reach the surface and then another 8 minutes to get to earth. This is because they are absorbed and then new ones are emitted when they travel through the core.
But if the photon is absorbed and reemitted, then it is not the same photon. Photons can't be slowed down, they always travel at c, so something else (energy?) takes 100,000 years to reach the surface, but not the photon.


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