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Physicists Just Showed the Faraday Effect Works in a Totally New Way After Nearly 200 Years

In 1845, Michael Faraday showed that light and magnetism are linked. He passed a beam through glass inside a magnetic field and found that its polarization — the direction its waves wiggle — rotated.
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Physicists reveal a new twist on the Faraday effect after 200 years

Nearly two centuries after Michael Faraday first showed that magnetism can twist light, physicists have uncovered a hidden ...