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A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)

Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 552

An illustration from A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments.", 1891, leaf 552 — ua,provided with electrodes terminating in disks or portions ofspheres, and often with much other internal furniture ofmetal, mica, etc., are commonly called Crookes tubes,after an English investigator, whose experiments madesuch tubes widely known. • 412. Cathode Rays.—It was noticed long ago that… … of influence appears to proceed in straight lines from the cathode; for certain effects are observed at spots within the unobstructed reach of such lines and not at all or very little elsewhere. Thus Fig. 286 shows a shadow cast by a screen, S, placed in the course of rays from the cathode, C,…

Physics

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