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Scientific American, Vol. 97, No. 10 (1907) (1907)
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RESISTANCE © it ff y were so large; with the simpler method of electrical that helium is formed as the result of the spontaneous s—o aathhicad oO | record, these differences are much reduced. The object change of radium emanation. Sir William now finds TELEGRAPH KEYS SWITCH ® of the Wells apparatus… … The Wells Apparatus. Originally this wheel was used for experiments on ——_—__——__—2 +8 _—_- moving objects and commingling colors, and these led be men of science and not dreamers, that before they The Railroad Commission of Indiana has issued to the results on perception with the moving eye, on…Internet Archive · Public domain (published before 1931). Free to use for anything.
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