Photograph of Oertling balance used by Prof. Poynting

maker:
L Oertling

Photograph of Oertling balance used by Prof. Poynting, in 1878, for his "Determination of the Mean Density of the Earth and the Gravitation Constant".

Details

Category:
Geophysics
Object Number:
1921-31
type:
photograph
credit:
National Physical Laboratory.