Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 414
Fig. 137. — Model of atom, non-radiating at left and radiating at right. of electrons carrying (or perhaps consisting of) negativecharges of electricity, which revolve around the positivenucleus at great speed. Under ordinary circumstances theelectrons revolve in circular paths with uniform speed,…
Astronomy
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