School Atlas of Astronomy: Comprising, in Twenty-one Plates, a Complete Series of Illustrations of the Heavenly BodiesWilliam Blackwood and sons, 1869 - 70 strani |
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Zadetki 1–5 od 10
Stran 5
... Sidereal Time - Equation of Time . One of the most important practical advantages connected with the study of ... sidereal day . This interval of time , like the mean solar day , is invariable , and is in like manner subdivided ...
... Sidereal Time - Equation of Time . One of the most important practical advantages connected with the study of ... sidereal day . This interval of time , like the mean solar day , is invariable , and is in like manner subdivided ...
Stran 5
... sidereal day is shorter than the solar day . The reason of this is obvious . It arises from the circumstance of the annual motion of the sun being contrary in direction to the diurnal motion of the stars . Let us suppose the sun and a ...
... sidereal day is shorter than the solar day . The reason of this is obvious . It arises from the circumstance of the annual motion of the sun being contrary in direction to the diurnal motion of the stars . Let us suppose the sun and a ...
Stran 6
... sidereal time , but the results in the ' Nautical Almanac , ' founded upon the theory of the sun's apparent motion , enables us to pass with facility from sidereal to mean solar time . CHAPTER V. On the Corrections to the Apparent ...
... sidereal time , but the results in the ' Nautical Almanac , ' founded upon the theory of the sun's apparent motion , enables us to pass with facility from sidereal to mean solar time . CHAPTER V. On the Corrections to the Apparent ...
Stran 16
... sidereal revolution . Thus , in the case of Venus , while the sidereal revolution does not exceed 224 days in round numbers , the synodical re- volution amounts to 584 days . * The orbit of the planet is here supposed to be circular ...
... sidereal revolution . Thus , in the case of Venus , while the sidereal revolution does not exceed 224 days in round numbers , the synodical re- volution amounts to 584 days . * The orbit of the planet is here supposed to be circular ...
Stran 18
... sidereal and synodic revolutions of an inferior planet holds good also in the case of a superior planet . Let us suppose the planet to be in opposition at P. If the planet remained at rest while the earth revolved round the sun , it ...
... sidereal and synodic revolutions of an inferior planet holds good also in the case of a superior planet . Let us suppose the planet to be in opposition at P. If the planet remained at rest while the earth revolved round the sun , it ...
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amounts angle angular apparent diameter apparent paths apparent position apparition appear astronomers Atlas atmosphere axis body brightness celestial object celestial sphere centre circle circumstance comet constellation dark lines direction discovered discovery diurnal motion double star earth's orbit earth's surface ecliptic Edinburgh & London Engraved & Printed equator excentricity exhibits greatest heavens Herschel horizon inches inferior conjunction inferior planets instance Jupiter KEITH JOHNSTON light longitude magnitude Maps Mars mean distance mean solar Mercury meridian meteors millions of miles minor planets moon moon's motion movements naked eye nebula Neptune night node observations opposite passing perihelion phenomena planet revolves Printed in Colours rays refraction remarkable represented result revolving round right ascension ring round the sun satellites Saturn seen shadow shooting stars sidereal solar parallax solar spectrum south pole southern hemisphere spots sun's disc superior planets suppose synodic revolution telescope termed total eclipse Uranus velocity Venus visible William Blackwood
Priljubljeni odlomki
Stran 17 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Stran 70 - Director-General of the Geological Survey of Great Britain and Ireland ; and JAMES NICOL, FRSE, FGS, Professor of Natural History in the University of Aberdeen. Constructed by ALEX. KEITH JOHNSTON, FRSE, &c., Geographer to the Queen, Author of the "Physical Atlas,