Leyden jar


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Leyden jar

(lī`dən), form of capacitorcapacitor
or condenser,
device for the storage of electric charge. Simple capacitors consist of two plates made of an electrically conducting material (e.g., a metal) and separated by a nonconducting material or dielectric (e.g.
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 invented at the Univ. of Leiden in the 18th cent. It consists of a narrow-necked glass jar coated over part of its inner and outer surfaces with conductive metal foil; a conducting rod or wire passes through an insulating stopper in the neck of the jar and contacts the inner foil layer, which is separated from the outer layer by the glass wall. By modern standards, the Leyden jar is cumbersome and inefficient. It is rarely used except in laboratory demonstrations of capacitance.

Leyden jar

[′līd·ən ‚jär]
(electricity)
An early type of capacitor, consisting simply of metal foil sheets on the inner and outer surfaces of a glass jar.

Leyden jar

Physics an early type of capacitor consisting of a glass jar with the lower part of the inside and outside coated with tin foil
References in periodicals archive ?
Articles appeared describing the Ark of the Covenant as "a very expensive but very perfect Leyden jar," (5) or in similar terms.
It was more than 80 years since Benjamin Franklin, in 1752, had experimented with static electricity from Leyden jars and with electricity from the sky, by flying a kite over Philadelphia during a storm.
Franklin noted the manner of discharge of the Leyden jar.
Moreover, Franklin charged a Leyden jar from the key just as easily as if it were a friction machine.
Those early, simple spark gap transmitters have an ancestry that can be traced back to the electrical machines and Leyden jars that 18th-century experimenters used to astound their spectators.
filling Leyden jars, the violet corona of a ship's mast and
Behind it, four electrostatic generators use LP records to create electrical charges, then store the energy in Leyden jars.