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History of Science Museum

Puluj Radiometer with Electrodes, c. 1890

Inventory Number 68508


Item type
Object
Provenance
Not ascertained
Object type
Radiometer
Dimensions
Height: 240mm Width: 145mm Depth: 70mm Weight: 123g
Inventory No
68508

Description

Puluj electric radiometer with rotating vanes which are moved by the off-centre cathode ray stream. The mica vanes have florescent images which glow; on each vane there is a sun shape on one side and five circles on the other. The glass electric radiometer stands on a turned blackened wooden base. The base is weighted down by a lead ring.