Variation compas, for observations of the Aurora, 19th century.

Variation compas, for observations of the Aurora, 19th century.
2 9 c m
40cm
actual image size: 32cm x 21cm

Description

Variation compas with a 12 inch needle, used for observations of the effect of the Aurora on the magnetic needle by the Royal Society in the 19th century.

Image Details

Image Ref.
 
10288942

© Science Museum / Science & Society Picture Library

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