Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
,in the time it turns eastward around its axis, one rotation will notbring the same meridian around from the sun to the sun again; there-fore, the earth must make somewhat more than one rotation to com-plete a solar day. Suppose a man to be standing at a given point, at 12 oclock, noon,on the… … passed from E to F, and he will now see the sun in the direction of thedotted line, SD, instead of the direction of the line, SID, coming fromthe star, IST. The difference, then, between the sidereal day and the solar day, isthe length of time it takes the earth to rotate from the line, SID, to…
Physics · Astronomy
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