File:1911 Britannica - Siemens Electrodynamometer.png

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Summary

Description
English: Siemens electrodynamometer.
  • F, Fixed coil
  • D, Movable coil
  • S, Spiral spring
  • T, Torsion head
  • MM, Mercury cups
  • I, Index needle.
    Illustration from 1911 Encyclopædia Britannica, article Amperemeter.
Date
Source Encyclopædia Britannica Eleventh Edition, Vol. 1, Page 881
Author Encyclopædia Britannica, 1911

Licensing

Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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current17:32, 8 January 2012Thumbnail for version as of 17:32, 8 January 20121,042 × 682 (56 KB)Clarice Reis