Daniell battery, 1895.
3 4 c m
40cm
actual image size: 32cm x 26cm

Daniell battery, 1895.

© Science Museum / Science & Society Picture Library

Description

Daniell battery made by Elliott Bros. John Frederic Daniell (1791-1845) was the first Profesor of Chemistry at King's College, London. This type of cell was invented by him in 1836 and was the first two-fluid arrangement, in which one fluid acted as electrolyte and the other as a depolariser. It was used by all the emerging British and American commercial telegraph systems because the current produced was stronger and more constant. The Voltaic pile and similar batteries had a tendancy to polarise and almost stop producing current after a while.
 

Image Ref.

10194339
 

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