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Why the electromagnetic waves speed is constant in a vacuum and what is its value?

0 1 View | Posted 3 months ago
Asked by Shiksha User

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  • P

    Answered by

    Pallavi Pathak | Contributor-Level 10

    3 months ago

    The EM wave speed in a vacuum is determined by the permeability and permittivity of free space. It is given by the formula:

     c = 1 ? 0 ? 0

    The constant value is around  3 * 10 8  m/s.

    This speed forms the basis for many scientific and technological applications. It is a fundamental physical constant.

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