Adjustable spark gap, early 19th century.
- Made:
- 1801-1830
Adjustable spark gap, early 19th century. This instrument consists essentially of two brass balls. The lower one is supported on an insulated blue glass pillar; the upper one can be held at the required height above it by a catch. The catch can be released to let the upper ball make contact with the lower one. Either ball could be earthed while the other was charged.
Details
- Category:
- King George III
- Object Number:
- 1927-1444
- Measurements:
-
height 440 mm
length 225 mm
width 115 mm
base: length 220 mm
base: width 115 mm
- type:
- spark gaps
- rights:
- Unlinked Name
- credit:
- King’s College London
