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'Trough' battery, early 19th century.

'Trough' battery, early 19th century.
3 4 c m
actual image size: 32cm x 26cm


Voltaic battery, an improvement on Volta's original 'pile'. The copper-zinc pairs are mounted on separate compartments in a wooden box, forming a horizontal series of 50 pairs. The cells are filled with a solution of common salt, or with dilute acid. This type of battery retained its charge much longer than the original Volta pile type.

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© Royal Institution / Science & Society Picture Library

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