A new manual of the elements of astronomy, descriptive and mathematical .. (1868)
Kiddle, Henry, 1824-1891 · New York, Ivison, Phinney, Blakeman & co.; Chicago, S.C. Griggs & co. · leaf 137
fainting away. The eclipticis so called because eclipses only take place when the moon is in its plane,t From the Latin word pene, meaning almost, and umbra, meaning ashadow. Questions.^—180. What is an eclipse ? Of how many kinds ? 181. How is a solareclipse caused? 182, A lunar eclipse? a. How is… … SOLAB AND LUNAE ECLIPSES. 183. If the moon moved exactly in the plane of theearths orbit, a solar eclipse would occur at every new moon,and a lunar eclipse at every full moon ; but as the moonsorbit is inclined to that of the earth, an eclipse can onlyhappen when the moon is at or near one of its…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
