A new treatise on astronomy, and the use of globes : in two parts ... (1866)
M'Intire, James, 1799-1879 · New York : Published by A.S. Barnes & Burr ... · leaf 175
a pari icular placeDraw the diagram, and show how the quantity may be fouud. V/liet 108 ASTRONOMY. eclipse. If this distance is intermediate between (d + rf) and Sd ~ d), there will be a partial eclipse ; and if it is less thand ~,d), the eclipse will be annular or total, according as d isgreater… … Having drawn the common tangents on the same anddifferent sides of the sun and earth, it is evident that theeclipse of the moon M, will be total as long as she iswholly immersed in the real shadow or umbra a 6 C ofthe earth. Should a part of the moon, but not the whole,enter the shadow, the eclipse…
Astronomy
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