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)
Heath, Thomas Little, Sir, 1861-1940, Aristarchus, of Samos. On the sizes and distances of the sun and moon. English & Greek. 1913 · Oxford : Clarendon press · leaf 217
1887, pp. 20, 21), and I quote the solution exactly ashe gives it:— Let AB be the axis of the first sphere, and the circle A OB the circle inwhich P, Pf the poles of the second sphere, and Μ the position of the planet,are found together at the same moment. Suppose that the motion of the twospheres… … Fig. 8. Let i be the inclination AOP, r the arc of a great circle AM, u (measuredpositively downwards) the angle OAM. Then in the triangle Ρ AM we have, since Ρ Μ = 900, cos r = — sin i cos β,sin r cos (Θ + u) — + cos i cos Θ,sin r sin (Θ + u) = 4- sin Θ. Multiplying the second equation by (-sin#)…
Aristarchus, of Samos · Astronomy, Greek · Astronomers
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