Page:Gods Glory in the Heavens.djvu/373

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 * +THE EARTH.
 * Volume,
 * 1.000
 * Mass (Sun's = 1),
 * 0.0000028173
 * Density (water = 1),
 * 5.6747
 * Diameter, mean, in miles,
 * 7916
 * polar, in miles,
 * 7898
 * equatorial, in miles,
 * 7924
 * Circumference in miles,
 * 25,000
 * In one second of time bodies fall, latitude of London, in feet,
 * 16.835
 * Centrifugal force at equator (gravity = 1),
 * 0.00346
 * Times rotation requires to be increased to neutralise gravity at equator,
 * 17
 * Period of rotation in sidereal hours,
 * 24
 * Length of a mean solar day in sidereal time,
 * 24$h.$ 3$m.$- 56$s.$.55
 * sidereal day in mean solar time,
 * 23$h.$ 56$m.$ 4$s$.09
 * Daily acceleration of sidereal time in mean solar time,
 * 3$m.$ 55$s.$.09
 * Greatest difference between the mean and apparent solar time,
 * 16$m.$ 16$s.$
 * Greatest height of mountains in miles,
 * 5
 * Axis of the poles (axis of diameter of equator = 305),
 * 304
 * Greatest depth of ocean in miles,
 * 9
 * Mean distance from the Sun (Earth's radius = 1),
 * 23,984
 * in miles,
 * 95,000,000
 * Distance at perihelion (mean distance = 1),
 * .9832
 * aphelion (mean distance = 1),.
 * 1.0168
 * Eccentricity (semi-major axis = 1),
 * 0.016783568
 * Sidereal revolution in mean solar days.
 * 365$d.$ 6$h.$ 9$m.$ 9$s.$.6
 * Anomalistic revolution in mean solar days.
 * 365$d.$ 6$h.$ 13$m.$ 49$s.$
 * Tropical revolution in mean solar days,
 * 365$d.$ 5$h.$ 48$m.$ 49$s.$.7
 * Interval between vernal and autumnal equinoxes,
 * 186$d.$ 11$h.$ 34$m.$
 * Interval between autumnal and vernal equinoxes,
 * 178$d.$ 18$h.$ 7$m.$
 * }
 * in miles,
 * 95,000,000
 * Distance at perihelion (mean distance = 1),
 * .9832
 * aphelion (mean distance = 1),.
 * 1.0168
 * Eccentricity (semi-major axis = 1),
 * 0.016783568
 * Sidereal revolution in mean solar days.
 * 365⇭⇭⇭ 6⇭⇭⇭ 9⇭⇭⇭ 9⇭⇭⇭.6
 * Anomalistic revolution in mean solar days.
 * 365⇭⇭⇭ 6⇭⇭⇭ 13⇭⇭⇭ 49⇭⇭⇭
 * Tropical revolution in mean solar days,
 * 365⇭⇭⇭ 5⇭⇭⇭ 48⇭⇭⇭ 49⇭⇭⇭.7
 * Interval between vernal and autumnal equinoxes,
 * 186⇭⇭⇭ 11⇭⇭⇭ 34⇭⇭⇭
 * Interval between autumnal and vernal equinoxes,
 * 178⇭⇭⇭ 18⇭⇭⇭ 7⇭⇭⇭
 * }
 * Tropical revolution in mean solar days,
 * 365⇭⇭⇭ 5⇭⇭⇭ 48⇭⇭⇭ 49⇭⇭⇭.7
 * Interval between vernal and autumnal equinoxes,
 * 186⇭⇭⇭ 11⇭⇭⇭ 34⇭⇭⇭
 * Interval between autumnal and vernal equinoxes,
 * 178⇭⇭⇭ 18⇭⇭⇭ 7⇭⇭⇭
 * }
 * 178⇭⇭⇭ 18⇭⇭⇭ 7⇭⇭⇭
 * }