Young, Charles A. (Charles Augustus), 1834-1908, Young, Anne Sewell, b. 1871., ed · Boston, New York [etc.] Ginn and Company · leaf 133
ut the synodic, as is evi- 180] THE SUNS ROTATION. 119 dent from Figs 42. Suppose an observer on the earth atE sees a spot on the centre of the suns disc at #; whilethe sun rotates E will alsomove forward in its orbit;and the observer, the nexttime he sees the spot on thecentre of the disc, will be… … T E Fig. 42.Synodic and Sidereal Revolution of the Sun. T being the true period of the suns rotation, E the length of theyear, and S the observed synodic rotation. This gives T— 25.35. Different observers, however, get slightly different results. Car-rington finds 25.38 ; Spoerer, 25.23. The paths…
Astronomy · Constellations
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