Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 90
rs will leave bright trails on the plate in arcsof circles. Fig. 72. — SailingRound the Earth. MOTHER EARTH, OLD ADAMS PLANET 69 The Earth Turning on Its Axis Makes Day and Night. —The Earth, in turning round on its axis once every 24 hours,receives the light of the Sun on half of its surface at a… … Fig. 73.—The Earth Moves Away from the Swinging Pendulum. all over the world would be of the same length, that is, each wouldbe 12 hours long. Instead, the Earth is tilted a little, as shownin Fig. 75—to be exact, its axis is tilted 23j^ degrees out ofthe perpendicular and this makes the day and…
Astronomy · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
