Birkeland, Darboux and Poincaré: Motion of an Electric Charge in the Field of a Magnetic Pole
نویسندگان
چکیده
1 Problem In 1896, Birkeland reported [1, 2, 3, 4] studies of a Crookes tube when a strong, straight electromagnet was placed outside and to the left, as in the figures below.
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