Elementary treatise on electricity and magnetism : founded on Joubert's "Traité élémentaire d'électricité" (1909)
Foster, G. Carey (George Carey), Porter, Alfred William, 1863-1939, Joubert, Jules François · London : Longmans · leaf 614
employed, the beam convergesapproximately to a focal point a little beyond the ceiatre of cur-vature ; and after passing this point it once more diverges andspreads through the tube. These appearances are so similar tothose presented by a beam of ordinary light that the term CathodeRays was given… … Heat sufficient to render platinum incandescent may be produced at the focal point. When the stream strikes the w;ills of the tube or a solid obstacle within it, it excites phosphorescence, the colour of which depends upon the substance struck. When this phosphorescent light is examined I…
Electricity · Magnetism
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