Abstract
REFERENCE is made in text-books on magnetism to experiments by Paillot1 and others in which potential differences such as 0.05 volt for 30,000 gauss were obtained between an iron electrode in the field and another which is not. It seems, however, that one should expect only the much smaller potential difference calculable by equating the magnetic energy change involved per c.c. (7.8 gm.) of iron (which is (µ- 1)H2/8?;) with the corresponding electrochemical energy (which is V × 108 × 7.8 ×l0â1/0.000289), whence we get V = (µ l)H2 × 1.5 × 10â13 volts, the values for various fields being:
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