Leyden jar
device · 1745 · Early modern era
The first capacitor.
Inventor: Ewald Georg von Kleist.
What it is made of
- Outer metal foil coating — has part. Foil on the outside of the jar.
- Inner metal foil lining — has part. Foil or water inside.
- Brass rod with chain — has part. A lead to the inner plate.
Principles and materials it uses
- Glass — is made of. A glass jar with foil.
- Electrostatic machine — uses. Charged by the machine.
Where it is used
- Electrostatic machine — is part of. Charge stores.
History: what it evolved from and what it influenced
- Capacitor — evolved into. The Leyden jar was the first capacitor.