Radiometer used to illustrate Sir William Crookes' researches

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Radiometer used to illustrate Sir William Crookes' researches
Science Museum Group
© The Board of Trustees of the Science Museum

Radiometer used to illustrate Sir William Crookes' researches on the radiation of heat in high vacua: pith-ball balance in vacuo (the balls are repelled if a flame is brought near), 1872-79.

Details

Category:
Heat
Object Number:
1888-166/2
Materials:
glass, wood (unidentified), sealing wax and metal (unknown)
Measurements:
tube: 235 mm x x , 23 mm, .055kg
type:
radiometer (crookes' type) and laboratory equipment (physics)
credit:
Sir William Crookes