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Description: Electromagnetic machine, Dr. Hearder's, vertical coil trembler switches and terminals, battery in glass cylinder with second cylinder, invented by Dr. Hearder, Plymouth, English, c.1900 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: induction coils Temporal: 1900 Source: Science Museum Identifier: A119506 Go to resource More Like this...-
Electromagnetic machine, vertical induction coil,…Electromagnetic machine, vertical induction coil,…
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