Two pairs of blackened & gilt spheres
- Made:
- Unattributed place
Two pairs of blackened & gilt spheres, Violle's actinometer, tested at Kew in 1889
Details
- Category:
- Meteorology
- Object Number:
- 1995-848
- Measurements:
-
each, overall: 22.2 cm
- type:
- actinometer
- credit:
- Meteorological Office, Berkshire
