A short course in astronomy and the use of the globes (1871)
Kiddle, Henry, 1824-1891 · New York, Chicago, Ivison, Blakeman, Taylor & co. · leaf 182
h it would have if viewed from thecentre. In the diagram, let the small circle represent the earth, having itfcentre at E; A, B, and C, a body as seen at different altitudesfrom the place P; EH, the plane of the rational horizon; Pli,the plane of the sensible horizon, and E Z, the direction of the… … zenith. At A, the body being in the sensible horizon, its apparentaltitude will be nothing; but if viewed from E, it would appearto be above the horizon adistance equal to the an-gle m E H, or its equalm A h, since the differ-ence in direction betweenthe lines E H or P h, andE in, is the difference…
Astronomy
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