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| Speed Of Gamma Rays In Media Is Less Than C.
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Alexander on November 2, 2001 16:51:49 UTC |
Due to interaction with media electrons and (for high energy rays) protons (absorption/re-radiation, etc). Because interstellar medium is not completely empty, over large distances you can observe slight difference in speed for different frequencies (called dispersion). |
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