Stars and telescopes; a hand-book of popular astronomy founded on the 9th ed. of Lynn's Celestial motions (1901)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911 · Boston, Little, Brown · leaf 132
TO ILLUSTRATE keplers 2d law ( The six shaded areasare all equal) … SIR ISAAC NEWTON 1643-I727) separate planet, inversely proportional to the squareof the distance from him.20 20 The work of both Kepler and Newton relates purely tolaws of planetary motion, and is in no way whatever concerned 94 Stars and Telescopes The planets vary very much in size, as is…
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
