The London, Edinburgh and Dublin philosophical magazine and journal of science . cup in one ofits extremities. F is a double pulley whose axis is a thickbrass cylinder ; a point made of non-magnetic nickel steel isfirmly fixed to one of its extremities, while the ferro-magnetic rod is soldered to the other, as shown in fig. inner pulley serves to twist the specimen to be tested,and the outer to increase the sensibility of the apparatus. * Amer. Journ. of Sci. xxxiv. p. 175 (1887); Phys. Rev. xiii. p. 257(1901). t Day, Electrician, xxxix. p. 480 (1897). X J. S. Stevens, Phys. Kev. (3) x.
The London, Edinburgh and Dublin philosophical magazine and journal of science . cup in one ofits extremities. F is a double pulley whose axis is a thickbrass cylinder ; a point made of non-magnetic nickel steel isfirmly fixed to one of its extremities, while the ferro-magnetic rod is soldered to the other, as shown in fig. inner pulley serves to twist the specimen to be tested,and the outer to increase the sensibility of the apparatus. * Amer. Journ. of Sci. xxxiv. p. 175 (1887); Phys. Rev. xiii. p. 257(1901). t Day, Electrician, xxxix. p. 480 (1897). X J. S. Stevens, Phys. Kev. (3) x. p. 161 (1900). § H. Nagaoka, Phil. Mag. 1. p. 53 (1900). Rigidity of Ferromagnetic Substances by Magnetization. 539 C is a magnetizing coil and E a block of wood, to which arotating cylinder is fixed, as in the case of the former ex-periments. A fine copper wire, well annealed by passing anelectric current, is attached to a point on the outer circum-ference of the pulley and goes vertically upward around wire after passing round the cylinder is stretched by a Fig. Fl*. 2.
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectscience, bookyear1840
