A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 250
s shown in Fig. 130, the distance BC measuredalong the earths surface will be over 3000 miles, although BF is only2000. 384. Velocity of the Shadow and Duration of Eclipses. — Themoon advances along its orbit very nearly 2100 miles an hour, andwere it not for the earths rotation this is the rate at… … Fig. 131. — Track of the Moons Shadow, Eclipse of July, 1878. miles an hour at the equator. An observer, therefore, on the earthsequator, with the moon near the zenith, would be passed by theshadow with a speed of about 1060 miles per hour (2100 — 1040) ;and this is its slowest velocity, which is…
Astronomy
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