Licht, Waerme, Strahlen / Magnetismus, Elektrizitaet, Induktion / Daemonen und Geister

Licht, Waerme, Strahlen / Magnetismus, Elektrizitaet, Induktion / Daemonen und Geister

Electrodynamic Current Balance
William Thomson (Lord Kelvin), Glasgow, around 1887

Instrument for measuring electric current. The arm of a balance deflects because of electromagnetic attraction when current flows through the coils; this can be compensated for by a rider on the scale.

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