“In principio it is impossible to prove from experiments that something is non-existent.”

—  Felix Ehrenhaft

The Magnetic Current http://adsabs.harvard.edu/abs/1941Sci....94..232E, Science, Volume 94, Issue 2436, pp. 232-233 (September, 1941)

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Felix Ehrenhaft 2
Austrian physicist 1879–1952

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