Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 275
position can be determinedby observation. The anglesM1SE2 and M1SM2 can bedetermined from the periods of the earth and Mars and theinterval of time required for the earth and Mars to movefrom El and Mi respectively to E2 and M2. The differenceof these two angles is M2SE2, from which, together… … Fig. 85.- - Finding the distance of asuperior planet. CH. VIII, 145] THE SOLAR SYSTEM 229 not a circle. But the manner in which the distance of theearth from the sun varies can easily be determined fromobservations of the apparent diameter of the sun, for theapparent diameter of an object varies…
Astronomy
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
