Demonstration Dynamo

Demonstration Dynamo

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Description
With this demonstration dynamo, each revolution of the crank lifts the ratchet, allowing a spring to rotate the coil through 10 degrees. As the coil moves through any ten-degree interval, an E.M.F. is induced with corresponds to the mean angular displacement of the coil from its original position.
Ref: Robert Andrews Millikan and John Mills, A Short University Course in Electricity, Sound and Light (Boston, 1908), p. 134.
Central Scientific Co. Catalogue (Chicago, 1928).
Location
Currently not on view
Object Name
dynamo
Physical Description
metal (overall material)
Measurements
overall: 6 1/4 in x 11 in x 5 1/2 in; 15.875 cm x 27.94 cm x 13.97 cm
ID Number
2010.0235.27
catalog number
2010.0235.27
accession number
2010.0235
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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