Letters on Astronomy: In which the Elements of the Science are Familialry [!] Explained ... With Numerous EngravingsHarper & Brothers, 1840 - 427 |
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Strona 20
... horizon is the great circle which divides the earth into upper and lower hemispheres , and separates the visible heavens from the invisible . This is the ra- tional horizon . The sensible horizon is a circle touch- ing the earth at the ...
... horizon is the great circle which divides the earth into upper and lower hemispheres , and separates the visible heavens from the invisible . This is the ra- tional horizon . The sensible horizon is a circle touch- ing the earth at the ...
Strona 21
... horizon , it is only necessary to count the number of degrees of the horizon between that point and the meridian , in order to find its azi- muth ; but if the point is above the horizon , then its azimuth is estimated by passing a ...
... horizon , it is only necessary to count the number of degrees of the horizon between that point and the meridian , in order to find its azi- muth ; but if the point is above the horizon , then its azimuth is estimated by passing a ...
Strona 24
... horizon of any place is always equal to the latitude of the place . Thus , in forty degrees of north latitude we see the north star forty degrees above the northern ho- rizon ; whereas , if we should travel southward , its ele- vation ...
... horizon of any place is always equal to the latitude of the place . Thus , in forty degrees of north latitude we see the north star forty degrees above the northern ho- rizon ; whereas , if we should travel southward , its ele- vation ...
Strona 25
... horizon . The earth is divided into five zones . That portion of the earth which lies between the tropics is called the torrid zone ; that between the tropics and the po- lar circles , the temperate zones ; and that between the polar ...
... horizon . The earth is divided into five zones . That portion of the earth which lies between the tropics is called the torrid zone ; that between the tropics and the po- lar circles , the temperate zones ; and that between the polar ...
Strona 26
... horizon is best represented by a circular piece of pasteboard , cut so as to fit closely to the apple , be ing movable upon it . When this horizon passed through the poles , it becomes the horizon of the equa tor ; when it is so placed ...
... horizon is best represented by a circular piece of pasteboard , cut so as to fit closely to the apple , be ing movable upon it . When this horizon passed through the poles , it becomes the horizon of the equa tor ; when it is so placed ...
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angle appear ascertain astronomers atmosphere attraction axis called celestial celestial sphere centre circle comet conjunction constellation degrees diameter direction discovery disk distance diurnal motion doctrine double stars earth ecliptic equal equator equinox exhibit fact fixed stars force Galileo globe gravity greater greatest half Halley's comet heavenly bodies heavens Hence Herschel horizon inferior conjunction inferior planets instrument 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 nearer nearly nebula node objects observations opposite orbit parallax passing perihelion period phenomena planetary planets pole respect revolve right ascension ring round satellites Saturn seen shadow side solar system space spectator sphere sun's superior planets supposed surface tance telescope thousand tides tion Tycho Tycho Brahe universal gravitation Uranus velocity Venus visible west to east
Popularne fragmenty
Strona 195 - Less than archangel ruined, and the excess Of glory obscured ; as when the sun, new risen, Looks through the horizontal misty air Shorn of his beams, or from behind the moon, In dim eclipse, disastrous twilight sheds On half the nations, and with fear of change Perplexes monarchs.
Strona 88 - Go, wondrous creature! mount where Science guides, Go, measure earth, weigh air, and state the tides; Instruct the planets in what orbs to run, Correct old Time, and regulate the sun; Go, soar with Plato to th...
Strona 181 - O'er the dark trees a yellower verdure shed, And tip with silver every mountain's head; Then shine the vales, the rocks in prospect rise, A flood of glory bursts from all the skies...
Strona 208 - First in his east the glorious lamp was seen, Regent of day, and all the horizon round Invested with bright rays, jocund to run His longitude through heaven's high road ; the gray Dawn and the Pleiades before him danced, Shedding sweet influence.
Strona 235 - Fairest of stars, last in the train of night, If better thou belong not to the dawn, Sure pledge of day, that crown'st the smiling morn With thy bright circlet, praise Him in thy sphere, While day arises, that sweet hour of prime.
Strona 383 - IX. 0 how canst thou renounce the boundless store Of charms which Nature to her votary yields! The warbling woodland, the resounding shore, The pomp of groves, and garniture of fields; All that the genial ray of morning gilds, And all that echoes to the song of even, All that the mountain's sheltering bosom shields, And all the dread magnificence of heaven, O how canst thou renounce, and hope to be forgiven ! X.
Strona 36 - Or in Valdarno, to descry new lands, Rivers or mountains in her spotty globe. His spear, to equal which the tallest pine Hewn on Norwegian hills, to be the mast Of some great...
Strona 101 - As home he goes beneath the joyous moon. Ye that keep watch in heaven, as earth asleep Unconscious lies, effuse your mildest beams, Ye constellations, while your angels strike, Amid the spangled sky, the silver lyre. Great source of day ! best image here below Of thy Creator, ever pouring wide, From world to world, the vital ocean round, On nature write with every beam His praise.
Strona 181 - As when the moon, refulgent lamp of night ! O'er heaven's clear azure spreads her sacred light, When not a breath disturbs the. deep serene, And not a cloud o'ercasts the solemn scene; Around her throne the vivid planets roll, And stars unnumber'd gild the glowing pole, O'er the dark trees a yellower verdure shed, And tip with silver every mountain's head...
Strona 282 - On the other hand, in the regions beneath the dark side, a solar eclipse of fifteen years in duration, under their shadow, must afford (to our ideas) an inhospitable asylum to animated beings, ill compensated by the faint light of the satellites. But we shall do wrong to judge of the fitness or unfitness of their condition from what we see around us, when, perhaps, the very combinations which convey to our minds only images of horror, may be in reality theatres of the most striking and glorious displays...