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24 February, 00:01

The equation for the speed of an electromagnetic wave is

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  1. 24 February, 00:57
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    c = 1 / √ (ε₀*μ₀)

    Explanation:

    The speed of the electromagnetic wave in free space is given in terms of the permeability and the permittivity of free space by

    c = 1 / √ (ε₀*μ₀)

    where the permeability of free space (μ₀) is a physical constant used often in electromagnetism and ε₀ is the permittivity of free space (a physical constant).
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