The Solar System: A Study of Recent Observations |
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amount of heat aphelion astronomers atmosphere attraction average axis body bright brilliant canals Cassini's division cause centre comet conjunction curve dark density determined diameter disc discovered distance earth eclipse edge energy equator equatorial extremely feet gases gemination globe gravitation greater heavens heliometer Herschel inch inferior conjunction irregular Jupiter Kepler known latitude less light lines Lowell LOWELL OBSERVATORY markings Mars Martian mass measures Mercury meteors miles per second million miles minute molecules moon moon's motion mountains moving nearly Neptune Newcomb node observations occur ocean opposition orbit parabolic orbit parallax particles pass path pendulum perihelion photographs planet planetary portions position radiation rays recognised revolve ring satellites Saturn Schiaparelli seen sidereal period solar constant solar system spectrum speed spots stars sun's synodic period telescope temperature theory tides tion to-day transit Uranus varies velocity Venus visible water vapour wave
Popular passages
Page 257 - They have likewise discovered two lesser stars, or satellites, which revolve about Mars; whereof the innermost is distant from the centre of the primary planet exactly three of his diameters, and the outermost, five; the former revolves in the space of ten hours, and the latter in twenty-one and a half...
Page 158 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Page 310 - Age," etc. Fully illustrated. 8°, $2.00. *' This volume is the best popular and yet scientific treatment we know of of the origin and development of land-forms, and we immediately adopted it as the best available text-book for a college course in physiography. . . . The book is full of life and vigor, and shows the sympathetic touch of a man deeply in love with nature." — Science. 5.— Volcanoes. By TG BONNEY, FRS, University College, London.
Page 164 - Every particle of matter attracts every other particle with a force proportional to the product of their masses, and inversely proportional to the square of the distance between them.
Page 309 - FRS, in Great Britain. Each volume of the series will treat some department of science with reference to the most recent advances, and will be contributed by an author of acknowledged authority. Every effort will be made to maintain the standard set by the first volumes, until the series shall represent the more important aspects of contemporary science. The advance of science has been so rapid, and its place in modern life has become so dominant, that it is needful to revise continually the statement...
Page 310 - Earth Sculpture ; or, The Origin of Land-Forms. By JAMES GEIKIE, LL.D., DCL, FRS, etc., Murchison Professor of Geology and Mineralogy in the University of Edinburgh ; author of " The Great Ice Age,
Page 310 - New Haven Leader. 3. — Rivers of North America. A Reading Lesson for Students of Geography and Geology. By ISRAEL C. RUSSELL, Professor of Geology, University of Michigan, author of " Lakes of North America," "Glaciers of North America," " Volcanoes of North America,