Archive for Volta

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1786 – electrical stimulation

In 1786, in Bologna Italy, Luigi Galvani noticed that the muscles of a dead frog twitched when they came in contact with a metal probe and there were sparks visible between the probe and the frog muscle. Galvani made the assumption that the sparks came from the frog muscle. His associate, Alessandro Volta disagreed with […]

1838 – telegraph

1838 is often listed as the year for the invention of the telegraph. This was when Samuel Morse first successfully tested his electrical telegraphy device in the US. Cooke and Wheatstone listed a patent in England for a similar device in 1837 as an alarm system. In 1836, David Alter, a US scientist, demonstrated a […]

1791 – Faraday – bio

Michael Faraday was born in 1791 in South London, England. Faraday studied electromagnetic fields and was also a chemist. He proposed that magnetism is a circular force and used that idea to build the first simple electric motor. He discovered electromagnetic induction and built the first generator and transformer. He discovered that a magnetic field […]