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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Faraday as a Discoverer by John Tyndall: We may easily dismiss this experiment by saying that the heat is due
to the electric currents excited in the copper. But so long as we
are unable to reply to the question, 'What is an electric current?'
the explanation is only provisional. For my own part, I look with
profound interest and hope on the strange action here referred to.
Faraday's thoughts ran intuitively into experimental combinations,
so that subjects whose capacity for experimental treatment would, to
ordinary minds, seem to be exhausted in a moment, were shown by him
to be all but inexhaustible. He has now an object in view, the
first step towards which is the proof that the principle of
Archimedes is true of magnetism. He forms magnetic solutions of
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