Astronomy, a handy manual for students and others (1918)
Dyson, Frank Watson, Sir, 1868-1939 · New York, E.P. Dutton & Co. · leaf 106
ead ofthe direction BA. Let us further sup-pose that the gentleman with theumbrella walks round a circular track.When he is walking northwards hisumbrella will be pointed a little to thenorth, when eastward a little east,when southward a little south—the di-rection in which he holds the… … 96 ASTRONOMY in which the star is seen, is constantly changing—being always inclined slightly from the stars meandirection towards the direction in which the Earth atthe moment is travelling, and in consequence thestars are seen to describe small ellipses in the skyabout their mean positions. The…
Astronomy
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