🔬 Discovery

Faraday effect

Efecto Faraday

Date
13 de septiembre de 1845 · confidence high
Place
Royal Institution, London, United Kingdom
Credited to
Michael Faraday
Field
Cosmos & Earth

What was discovered

Convinced that light was an electromagnetic phenomenon, Faraday tested a "heavy" glass of his own manufacture and observed that a magnetic field rotated the polarization plane of light passing through it, the first experimental proof of a link between light and magnetism.

What it led to

  • Experimental basis for Maxwell's electromagnetic theory of light
  • Optical isolators and current sensors based on Faraday rotation
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Made possible

Links

Sources✓ verified 2026-09-28