Photograph as originally submitted to this page in the Historical Marker Database www.HMdb.org. Click on photo to resize in browser. Scroll down to see metadata.
Electro-Magnet
Photographer: Allen C. Browne
Taken: December 31, 2014
Caption: Electro-Magnet
Additional Description:
on W.W.Story's Statue of Joseph Henry
The SI unit of inductance is the Henry named for Joseph Henry who developed the practical use of the electromagnet.
Submitted: May 9, 2015, by Allen C. Browne of Silver Spring, Maryland.
Database Locator Identification Number: p307596
File Size: 3.393 Megabytes

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