Michael Faraday discovers electromagnetic induction. Separately, Joseph Henry also discovers induction but does not publish his findings. Faraday builds the first dynamo.
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Joseph Henry demonstrates an electric motor at the Albany Academy in the US.
1831
February 3
The US federal Copyright Act is revised to include printed music. The term of copyright is extended to 28 years, plus the renewal period of 14 years.
Joseph-Antoine Plateau invents the Phenakistiscope, using a slotted disc to create an appearance of continuous motion when spun in front of a series of still images.
1833
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Karl Friedrich Gauss and Wilhelm Weber build an electric telegraph at Göttingen, Germany.
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Simon Ritter von Stampfer, a Viennese professor, invents the Stroboscope.
The Daedalum, later renamed the Zoëtrope, is suggested by British mathematician William George Horner (1786-1837). Based on the Phenakistiscope but with the images arranged on the inside of a rotating cylinder, it becomes popular as a toy after 1860.
Chronomedia index
William Henry Fox Talbot [left] begins work on a