Howe, Herbert A. (Herbert Alonzo), 1858-1926 · Meadville, Penna., Flood and Vincent · leaf 48
. Let E bethe position of the ob-server on the earth,while S and S are twostars said to be 300apart. Through these stars a circle whose center is at E is drawn on the sur-face of the celestial sphere. From E two lines, ESand ES, are drawn, making the angle SES. Thisangle is measured by the number… … Fig. 10.—Measurement of an Angle. 42 A Study of the Sky. Center of thesphere. 8,000 miles, is very minute in comparison with thedistance from the earth to any fixed star, for the latterdistance is expressed by many millions of millions ofmiles. In consequence of this, the angular distancebetween…
Astronomy
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