
4 0 c m
31cm
actual image size: 23cm x 32cm
Description
Portrait of Edward Weston (1850-1936), naturalized American inventor. Weston was noted for his contribution to the technology of electrical measurements, including the invention of a moving -coil voltmeter and the Weston standard cell invented in 1892, based on mercury and cadmium. This replaced the Clark cell as a voltage reference source, and the Weston cell became the recognized standard at the International Conference on Electrical Units and Standards in London in 1908.
Image Details
Image Ref.
10303221
© Science Museum / Science & Society Picture Library