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 23
Stran 6
... sun , but by the stars . There are several important reasons in favour of this course of procedure . First , the sun appears on the meridian only once in twenty - four hours , and at the instant of arrival its disc may be obscured by ...
... sun , but by the stars . There are several important reasons in favour of this course of procedure . First , the sun appears on the meridian only once in twenty - four hours , and at the instant of arrival its disc may be obscured by ...
Stran 8
... sun and moon on the horizon , when they are in reality depressed beneath it . In point of fact , the sun is visible ... disc exhibits an oval shape , the vertical diameter being sensibly smaller than the horizontal diameter . This ...
... sun and moon on the horizon , when they are in reality depressed beneath it . In point of fact , the sun is visible ... disc exhibits an oval shape , the vertical diameter being sensibly smaller than the horizontal diameter . This ...
Stran 9
... sun . The mean value of the sun's apparent diameter may be said to amount to 32 ' . Again , the variation of refraction ... sun's disc when it is on the horizon . The same explanation is obviously applicable to the case of the moon ...
... sun . The mean value of the sun's apparent diameter may be said to amount to 32 ' . Again , the variation of refraction ... sun's disc when it is on the horizon . The same explanation is obviously applicable to the case of the moon ...
Stran 24
... sun's disc . Let V represent the centre of the planet . The observer at the station O will see the planet projected on the sun's disc at Y ; the observer at P will see it projected on the solar V O P CF X D DH disc at X. The result ...
... sun's disc . Let V represent the centre of the planet . The observer at the station O will see the planet projected on the sun's disc at Y ; the observer at P will see it projected on the solar V O P CF X D DH disc at X. The result ...
Stran 25
... sun than the earth , its motion is quicker , and the result is that it apparently travels over the sun's disc with a velocity equal to the excess of its orbital motion over that of the earth . Hence the explanation of its transit will ...
... sun than the earth , its motion is quicker , and the result is that it apparently travels over the sun's disc with a velocity equal to the excess of its orbital motion over that of the earth . Hence the explanation of its transit will ...
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Pogosti izrazi in povedi
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,