I'm not understanding something here. Maxwell's wave equation is:(adsbygoogle = window.adsbygoogle || []).push({});

Laplacian of E = (1/c^2) * second partial of E

(sorry, I don't know how to write symbols)

But the second partial derivative is the Laplacian. So how can you scale the laplacian of E by a number and get the laplacian of E as a result? Is there some fundamental rule of EM that allows this? What is physically happening? Thanks in advance.

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# Maxwell's electromagnetic wave equation confusion

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