File:Electromagnetic Measurements Lord Kelvins Ampere Balance.png: Difference between revisions
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[[Image:Electromagnetic Measurements Lord Kelvins Ampere Balance.png|thumb|right|A 1911 photo of Lord Kelvin's Ampere balance - an electromechanical apparatus used for the precise measurement of an ampere or unit of electric currents]] | |||
[[Category:Electromagnetic_measurements|{{PAGENAME}}]] |
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