The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 212
Fig. 207. (3) A number of observations render it very probable thatevery intense disturbance of the solar surface is propagatedto our terrestrial magnetism with the speed of light. Fig. 207 shows certain of the solar lines as they wereobserved by Professor Young on Aug. 3, 1872. The contor-tions of… … Fig. 208. atmosphere of the sun. There were three especially notableparoxysms in this distortion, occurring at a quarter of nine,half-past ten, and ten minutes of twelve, a.m. Fig. 208 shows the curve of magnetic disturbance as tracedat Greenwich on the same day. It will be seen from the curvethat…
Astronomy
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