Matter, ether, and motion; the factors and relations of physical science (1892)
Dolbear, A. E. (Amos Emerson), 1837-1910 · Boston, Lee and Shepard · leaf 237
ebe removed to about the one-hundredth of the normalpressure, the discharge appears as a broad band ofpurplish light between the terminals ; if the reductionbe to the thousandth, the light fills the tube. Still 224 MATTER, ETHER, AND MOTION further reduced, the discharge appears broken up… … Diag. 27. — Crookess Tube. Long Free Path. degree, this free path may be made as long as the tube,or longer. This means that a molecule may movefrom one end of the tube to the other without cominginto collision with another one. When a molecule touches upon the electrifiedterminal, it is impelled…
Physics
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