Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 431
kept, the suns southern hemisphere 384 AN INTRODUCTION TO ASTRONOMY [ch. xi, 230 has been somewhat more active than the northern. For theperiod from 1874 to 1902, 57 per cent of the total spot areawas in the southern hemisphere of the sun and only 43 percent in the northern. That is, the activity… … }lB77[lB7a|lfl73|lBaoll6Bl[lBB2[lBB3[l8M[l885|l8Ba[l887[l88B}lBS9|ia90[ ||ia52|lBB3[lBB4|lBB5|lB96[ie37[l6B8[l839|l90o]l90l Fig. 145. — Distribution and magnitudes of sun spots for the period from1876 to 1902 (Maunder). northern. Whether this difference is permanent and what itmeans cannot at…
Astronomy
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Combinations of colours with tints and with shades [microform] (1905)](https://img.insideoutlibrary.com/img/200/ia-cihm_83026-45-0.webp)