![](http://www.alamy.com/thumbs/6/896D1B1E-DA4C-45E4-9982-3AF19A9A8DAB/D7M74R.jpg)
Engraved book plate depicting instruments used in electrical experiments, circa 1890
Galvanometers were the first instruments used to detect and measure electric currents. Key to illustrations: 1. Edelmanns quarter-cylinder electrometer 2. Leyden Jar 3. Wimshurst Influence Machine 4. Electrophorus 5. Electrophorus 6. Gold-leaf Electroscope 7. Grove's Cell 8. Diagram showing a) four cells in series b) four cells in parallel c) three in series with two in parallel. 9. Apparatus for calibrating Galvanometer 10. Daniell's Cell 11. Leclanche Cell Galvanometer
Size: 6621px × 8808px
Location: UK
Photo credit: © ThislifeThen / Alamy / Afripics
License: Licensed
Model Released: No
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