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Apparatus for electrolysis, 1800-1820.

Apparatus for electrolysis, 1800-1820.
3 1 c m
actual image size: 32cm x 23cm


The item on the left is a reproduction of the voltaic pile used by Anthony Carlisle (1768-1840) and William Nicholson (1753-1815) to electrolyse water in 1800. The electrolysis cell in the centre dates from about 1810 and is very similar to the apparatus used by Humphry Davy (1778-1829) in 1807 to prepare potasium by the electrolysis of potash (potasium hydroxide). The apparatus on the right dates from around 1820 and is similar to that used by Davy to demonstrate the electrolysis of water at the Royal Institution. The experiment showed that hydrogen and oxygen were produced in the decomposition of water.

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© Science Museum / Science & Society Picture Library

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