Leyden jar, early 19th century.

Leyden jar, early 19th century.
4 0 c m
actual image size: 23cm x 32cm


Leyden jars were invented by E G von Kleist in 1745. They are devices for storing static electricity, and consist of two conductors separated by an insulator. This Leyden jar has a tinfoil coating both internally and externally. There is a bras ball conductor on a bras rod which extends through the mahogany lid and joins eight wires which are twisted together to form a cage.

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© Science Museum / Science & Society Picture Library

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