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Why do we determine light to be "polarized" by the plane of the electric field?

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Title pretty much says it all: why have we determined that the plane of the electric field of an electromagnetic wave should be the plane of polarization, rather than the plane of the magnetic field?

Is it simply because there needs to be a standard way to determine the rotation of light, or does the electric field play a more significant role than the magnetic field? If so, how?

I'm still kinda new to this, and I figured that this was worth asking. :thanks:

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