The elements of astronomy, physical and geometrical (1715)
Gregory, David, 1659-1708, Halley, Edmond, 1656-1742. Synopsis of the astronomy of comets, Adams, John, 1735-1826, former owner. BRL, Boston Public Library (John Adams Library) BRL · London : Printed for J. Nicholson ... and sold by J. Morphew ... · leaf 397
he diftance from the Center ofthe Earth is given, the Sine-of the Parallax isas the Sine of the apparent diftance from theVertex, (by Prof. 47;) and the apparant diftancefrom the Vertex being given, the Sine of theParallax is reciprocally as the diftance from theCenter (by preced.j And therefore… … Bookll. 0/Astronomy. 341 Proposition L.T^O find the Parallax of a Th^tnomenm that doe^-*- not change its Declination^ f^ffi^S between theTole and Vertex, Let ZV [^^^^.27.]be the Meridian, and in itZ the Zenith, P the Pole; the true Place K,and L the apparent Place of the Phaenomenon,whofe Parallel…
Astronomy
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