Duff, A. Wilmer (Alexander Wilmer), b. 1864, ed, Guthe, Karl Eugen, 1866-1915, Hallock, William, 1857-1913, Lewis, E. Percival (Exum Percival), 1863-1925, Goodspeed, Arthur W. (Arthur Willis), b. 1860, Carman, Albert Pruden, b. 1861, McClung, Robert Kenning, 1874- · Philadelphia, P. Blakiston's Son & Co · leaf 659
nducting power from the gas by filter-ing it through cotton wool or water indicates that the conduc-tivity must be due to something mixed with the air, while itsremoval by an electric field shows that, whatever it may be thatis mixed with the air, it must carry an electric charge. The air rendered… … EartK Earth plates placed a few centimeters apart in air and let A be con-nected to one pole of a battery while the other pole is connectedto earth; let B be connected to one pair of quadrants of a quad-rant electrometer while the other pair of quadrants is connectedto earth. If a beam of Rontgen…
Physics
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