Faraday's rotating wire – the homopolar motor: time to update?
Issue 338 | Page 115 | Published Sep 2010
Description
Answering some of the questions raised in the production of a previous article led to the development of a simple alternative design for the rotating wire demonstration. Significantly, this demonstration avoids the use of mercury as a conducting liquid. The attempt to explain variations in performance of another model and seeking the best performance for a new one became a catalogue of theoretical and practical activity that illustrates 'How science works'.
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