Blackened sphere from Violle's actinometer

PART OF:
Two pairs of blackened & gilt spheres
Made:
Unattributed place
Blackened sphere from Violle's actinometer

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Blackened sphere from Violle's actinometer
Science Museum Group
© The Board of Trustees of the Science Museum

Blackened sphere with wooden stand, from one of two pairs of blackened & gilt spheres, Violle's actinometer, tested at Kew in 1889

Details

Category:
Meteorology
Object Number:
1995-848/2
Materials:
wood and copper
Measurements:
each, overall: 22.2 cm
type:
actinometer
credit:
Meteorological Office, Berkshire