If visible light is electromagnetic field of certain wavelength does it form closed loops?
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I like this question. Thinking outside the box – TheEnvironmentalist Jul 05 '19 at 00:04
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There is no electric current to form a closed loop, no moving charge. – Jul 05 '19 at 00:36
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https://physics.stackexchange.com/q/19632/ – Jul 05 '19 at 00:37
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As far as we know, there are no magnetic monopoles, in light or anywhere else. This is what $\vec{\nabla}\cdot\vec{B}=0$, which is one of Maxwell’s equations, says. Thus magnetic field lines have nowhere to “end”. They form closed loops or extend to infinity.
G. Smith
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