Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 257
— The discoveries mentioned inthe last paragraph gave rise to the electron theory of matterdeveloped by the English physicist, Sir. J. J. Thomson. Thistheory is that all atoms are made up of systems of positivelyand negatively charged particles in rapid motion, the negativelycharged particles being… … FIG. 175. —X ray tube. The cathode rays from Kstrike the metal anode A and produce X rays. of electrons moving through the conductor; a negatively chargedbody contains an excess of electrons; and a positively charged body is deficient inelectrons. X rays. — Whenthe cathode raysfall upon a bodysuch…
Physics · Home Economics
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