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How do electromagnetic waves propagate in a vacuum? Please ask an expert to help solve this

2014-12-31View Original

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How do electromagnetic waves propagate in a vacuum? Please ask an expert to help solve this
Reply #22015-01-01
Energy exists in two forms: one is matter, which can transmit mechanical waves, and the other form is a field; geomagnetic waves propagate through such fields. Vacuum refers to a state in which there are no physical particles, but fields still exist; therefore, electromagnetic waves can propagate in a vacuum.

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Translated at 2026-07-21 03:19:45

Original: https://bbs.hcbbs.com/thread-1365185-1-1.html

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