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Electromagnetic wave equation - Wikipedia, the free encyclopedia
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日期:2025-12-14
where is the speed of light in a medium with permeability (μ), and permittivity (ε), and ∇2 is the Laplace operator. In a vacuum, c = c0 = 299,792,458 meters per second, which is the speed of light in free space.[1] The electromagnetic wave equation deriv...看更多














