Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 434
e is motion radially outwardfrom spot centers, at levels about 2500 miles higher there isno horizontal motion, and in the high levels of the chromo-sphere (10,000 to 15,000 miles) the motion is inward towardthe centers of the spots. This suggests that spots are pro-duced-by cooler gases from high… … FlG. 147. — The Mt. Wilson Solar Observatory of the Carnegie Institutionof Washington. Pasadena, California. ments, together with their kinetic energies, led St. John tothe conclusion that the material flowing inward and down-ward by no means equals that flowing outward at lowerlevels from the axes…
Astronomy
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