Letters on Astronomy: Addressed to a Lady; in which the Elements of the Science are Familiarly Explained in Connexion with Its Literary HistoryMarsh, Capen, Lyon and Webb, 1841 - 419 |
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Strona 20
... earth and skies seem to meet . The sensible horizon is parallel to the rational , but is distant from it by the semidiameter of the earth , or nearly four thousand miles . Still , so vast is the dis- tance of the starry sphere , that ...
... earth and skies seem to meet . The sensible horizon is parallel to the rational , but is distant from it by the semidiameter of the earth , or nearly four thousand miles . Still , so vast is the dis- tance of the starry sphere , that ...
Strona 21
... earth is the diameter on which the earth is conceived to turn in its diurnal revolution . The same line , continued until it meets the starry con- cave , constitutes the axis of the celestial sphere . The poles of the earth are the ...
... earth is the diameter on which the earth is conceived to turn in its diurnal revolution . The same line , continued until it meets the starry con- cave , constitutes the axis of the celestial sphere . The poles of the earth are the ...
Strona 22
... earth is its distance from the equator north or south . The polar distance , or angular distance from the nearest ... earth performs its annual revolutions around the sun . It passes through the centre of the earth and the centre of the ...
... earth is its distance from the equator north or south . The polar distance , or angular distance from the nearest ... earth performs its annual revolutions around the sun . It passes through the centre of the earth and the centre of the ...
Strona 26
... earth , select a large apple , ( a melon , when in season , will be found still better . ) The eye and the stem of the ap- ple will indicate the position of the two poles of the earth . Applying the thumb and finger of the left hand to ...
... earth , select a large apple , ( a melon , when in season , will be found still better . ) The eye and the stem of the ap- ple will indicate the position of the two poles of the earth . Applying the thumb and finger of the left hand to ...
Strona 69
... EARTH . " He took the golden compasses , prepared In God's eternal store , to circumscribe This universe , and all created things ; One foot he centred , and the other turned Round through the ... EARTH . 69 LETTER VII Figure of the Earth,
... EARTH . " He took the golden compasses , prepared In God's eternal store , to circumscribe This universe , and all created things ; One foot he centred , and the other turned Round through the ... EARTH . 69 LETTER VII Figure of the Earth,
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angle appear ascertain astronomers atmosphere attraction axis called celestial centre circle comet conjunction constellation degrees diameter direction discovery disk distance diurnal motion doctrine double stars earth ecliptic equal equator equinox exhibited fact fixed stars force Galileo globe gravity greater greatest half Halley's comet heavenly bodies heavens Hence Herschel horizon hundred inferior conjunction instrument John Herschel Jupiter Kepler latitude laws length less light longitude lunar lunar eclipse magnitude measure Mercury meridian meteors millions of miles minutes moon moon's motion move Nature nearer nearly node objects observations opposite orbit parallax passing perihelion period phenomena planetary planets pole respect revolve right ascension ring round satellites Saturn seen shadow side space spectator sphere sun's superior planets supposed surface telescope thousand tides tion truth Tycho Tycho Brahe universal gravitation Uranus velocity Venus vernal equinox visible west to east