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Leyden jar

(Encyclopedia)Leyden jar līˈdən [key], form of capacitor 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 conductiv...

Leyden

(Encyclopedia)Leyden, Netherlands: see Leiden.

Leiden

(Encyclopedia)Leiden or Leyden both: līˈdən [key], city (1994 pop. 114,892), South Holland prov., W Netherlands, on the Old Rhine (Oude Rijn) River. Manufactures include medical equipment, machinery, graphic art...

Lemonnier, Pierre Charles

(Encyclopedia)Lemonnier, Pierre Charles pyĕr shärl ləmônyāˈ [key], 1715–99, French astronomer. For many years he was professor of physics at the Collège de France. He studied the moon and the influence of ...

Lucas van Leyden

(Encyclopedia)Lucas van Leyden lüˈkäs vän līˈdən [key], 1494–1533, Dutch historical and genre painter and engraver. With Lucas, Dutch painting of scenes from daily life may be said to begin. His art is not...

capacitor

(Encyclopedia)capacitor 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 ...

hydria

(Encyclopedia)hydria hīˈdrēə [key], ancient Greek water jar with three handles—two lateral for lifting, a third vertical for pouring. In shape it was similar to the amphora, the early form having a narrower s...

electricity

(Encyclopedia)CE5 Electrical and radio symbols electricity, class of phenomena arising from the existence of charge. The basic unit of charge is that on the proton or electron—the proton's charge is designate...

Brown, Henry Kirke

(Encyclopedia)Brown, Henry Kirke, 1814–86, American sculptor, b. Leyden, Mass. He studied portrait painting with Chester Harding and later turned to sculpture, which he studied in Italy. Returning to America in 1...

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