Popular astronomy : a concise elementary treatise on the sun, planets, satellites and comets (1865)
Mitchel, O. M. (Ormsby MacKnight), 1809-1862 · New York : Oakley & Mason · leaf 165
ght byentering the shadow of the primary, and admitting thisentrance to be instantaneous, every eye everywhere shouldlose the light at the same moment of absolute time. The earths position in its orbit ought, therefore, tohave no effect on the time of the eclipse, and yet it be-came clearly… … J s the sun, E E E E the earths orbit, J Jupiter,and S the satellite. It was found that when theearth was at E, or nearest to Jupiter, the interval fromeclipse to eclipse grew longer as the earth receded fromJupiter. At E the interval was at a maximum. Itnow diminished by slow degrees, becoming…
Astronomy
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