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Statement of a problem № 3915

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The free-space wave equation for a medium without absorption is d2E-n0e0d2E/dt2 = 0 Show that this equation predicts that electromagnetic waves are propagated with velocity of light given by c = 1/sqrt(n0e0).

Solution:
The free-space wave equation for a medium without absorption is d2E-n0e0d2E/dt2

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