1850 in Science - Physics

Physics

  • Rudolf Clausius publishes his paper on the mechanical theory of heat, which first states the basic ideas of the second law of thermodynamics.
  • Hippolyte Fizeau and E. Gounelle measure the speed of electricity.
  • Léon Foucault demonstrates the greater speed of light in air than in water, and establishes that the speed of light in different media is inverse to the refractive indices of the media, using the Fizeau-Foucault apparatus.
  • May - John Tyndall and Hermann Knoblauch publish a report on "The magneto-optic properties of crystals, and the relation of magnetism and diamagnetism to molecular arrangement".

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