Kaye, G. W. C. (George William Clarkson), 1880-1941 · London, New York [etc.] Longman's Green, and Co. · leaf 186
r on the ions, (4) passage of the spark for photo-graphing the cloud tracks. Wilsons instantaneous photographs (see Figs. 1 and 76) lONISATION BY X RAYS 15: show the tracks of corpuscles starting within the beam ofX rays and extending for some distance beyond it. Thereis no indication of any… … Fig. 76.—Photograph obtained by 0. T. R. Wilson of the path of a beam ofX rays in air supersaturated with moisture (see p. 155), The beam of rays,about 2 mm. in diameter, traversed the air {from left to right of the picture)immediately after the expansion which produced the supersaturation. Theaxis…
X-rays
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