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The FUNDAMENTAL discovery that the ratio of the “absolute” electrostatic unit to the “absolute” electromagnetic unit of electric charge, predicted as velocity, was apparently identical with the velocity of light brought about an unforeseen confusion in the field of electrical units. The use of various absolute dimension systems expressing the electric and magnetic quantities by means of the three mechanical fundamental dimensions influenced the writing style of formulas and caused the introduction of arbitrary factors.
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E. Weber (1932) studied this question.
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