The Adolfo Stahl lectures in astronomy, delivered in San Francisco, California, in 1916-17 and 1917-18, under the auspices of the Astronomical Society of the Pacific (1919)
Astronomical Society of the Pacific, Aitken, Robert Grant, 1864-1951 · San Francisco Stanford University Press · leaf 248
cycle from maximum to maximum is11.1 years. The magnetic elements of the Earth show, asidefrom the secular and regular daily variations, irregularfluctuations in intensity; the so-called magnetic storms areexamples of extremely vigorous disturbances of thischaracter. When the sun-spot and… … Fig. 10. CoMPARisox of R.mnfall with Sun-Spots. an effort is made to correlate the weather, the rainfall forexample, with sun-spots it has not as yet been possible toestablish any well defined relation. It may be interesting tocompare the rainfall in California with the sun-spot curve.Records at…
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
