Saturn and Its System: Containing Discussions of the Motions (real and Apparent) and Telescopic Appearance of the Planet Saturn, Its Satellites, and Rings; the Nature of the Rings; the Great Inequality of Saturn and Jupiter; and the Habitability of Saturn. To which are Appended Notes on Chaldæan Astronomy, Laplace's Nebular Theory, and the Habitability of the Moon; a Series of Tables with Explanatory Notes; and Explanations of Astronomical TermsLongman, Green, Longman, Roberts, & Green, 1865 - 252 страници |
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Страница vii
... observers . The slope of the figures is , to a certain extent , a matter of indifference , since it varies with the hour of observation ; but to preserve uniformity I have adopted the following rule : - The horizontal line through the ...
... observers . The slope of the figures is , to a certain extent , a matter of indifference , since it varies with the hour of observation ; but to preserve uniformity I have adopted the following rule : - The horizontal line through the ...
Страница viii
... observer viewing the celestial sphere actually occupies the ' point of sight ' of the projection - that is the centre of the sphere . The object to be sought in all star - maps , is that the greatest portion possible of the celestial ...
... observer viewing the celestial sphere actually occupies the ' point of sight ' of the projection - that is the centre of the sphere . The object to be sought in all star - maps , is that the greatest portion possible of the celestial ...
Страница xii
... observer supposed to be K2 77 78 placed at the Sun's centre during a complete Revolution of Saturn • Actual Changes observed from the Earth Effect of the Inclination of Saturn's Orbit to the Ecliptie . 83 Disappearances and ...
... observer supposed to be K2 77 78 placed at the Sun's centre during a complete Revolution of Saturn • Actual Changes observed from the Earth Effect of the Inclination of Saturn's Orbit to the Ecliptie . 83 Disappearances and ...
Страница xxii
... observer of old , seeks among the celestial bodies the signs of change and motion , and when he has detected these , he tracks the wandering orb and calculates the extent and character of its orbit . To this work he must apply - besides ...
... observer of old , seeks among the celestial bodies the signs of change and motion , and when he has detected these , he tracks the wandering orb and calculates the extent and character of its orbit . To this work he must apply - besides ...
Страница 5
... observer employing them . Let us now carry the earth and planet forward in their orbits . It is obvious that the path of the earth becomes more and more inclined to the line of sight to the planet the farther the earth is carried on in ...
... observer employing them . Let us now carry the earth and planet forward in their orbits . It is obvious that the path of the earth becomes more and more inclined to the line of sight to the planet the farther the earth is carried on in ...
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Често срещани думи и фрази
angle aphelion appear ascending node astronomers atmosphere attractions body breadth celestial sphere Chaldæans circle conjunction considered corresponding Crown 8vo dark ring density determined diameter diminish disturbing division eccentricity ecliptic Edition effects ellipse equal equatorial equinox figure heliocentric hemisphere Herschel horizon inclined increase inner edge inner satellites interval Jupiter Jupiter's latitude less line of nodes line of sight longitude lunar major axis mean distance meridian miles moon moon's move nearly northern observer on earth opposition outer edge outer ring outline parallel path perihelion period phenomena plane of Saturn's planetary Plate pole position present quadrature R. A. Proctor represent respectively retrograde motion ring's plane rotation satellites Saturn Saturn's disc Saturn's globe Saturn's orbit Saturn's ring Saturnian seen shadow sidereal sidereal period solar southern spheroid stars sun's centre supposed synodical revolution Table telescope tion variations velocity vernal equinox vis viva vols Woodcuts