Aristarchus of Samos, the ancient Copernicus; a history of Greek astronomy to Aristarchus, together with Aristarchus's Treatise on the sizes and distances of the sun and moon (1913)
nd the bright portions in the moon when the cone comprehending both the sun and the moon has its vertex at our eye; 1 The promised Lemma (the equivalent of which is stated, rather than proved, in Euclid’s Oftics, 24) does not appear. Some of the MSS. have a scholium containing a rather clumsy… … is, and if 4H, AL be the pair of tangents from 4, and 277, PO the pair of tangents from P, then 170 > HL. By Eucl. vi. 8 and 17, CM?= CT.CP, and CH?=CS.CA; therefore CT. CP=CS,CAsor CA; CP=CT:CS. But CA< CP; therefore C7 < CS, so that the chord HZ is less than the chord 7270.
Aristarchus, of Samos · Astronomers -- Greece -- Biography · Astronomy, Greek -- History
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