Letters on Astronomy: In which the Elements of the Science are Familialry [!] Explained ... With Numerous EngravingsHarper & Brothers, 1840 - 427 |
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Strona 16
... less interesting to you than many that are to follow ; but still , permit me to urge upon you the necessity of studying it with attention , and reflecting upon each definition , until you fully un- derstand it ; for , unless you fully ...
... less interesting to you than many that are to follow ; but still , permit me to urge upon you the necessity of studying it with attention , and reflecting upon each definition , until you fully un- derstand it ; for , unless you fully ...
Strona 24
... less and less , until we reached the equator , where it would appear in the horizon . Or , if we should travel northwards , the north star would rise continually higher and higher , until , if we could reach the pole of the earth , that ...
... less and less , until we reached the equator , where it would appear in the horizon . Or , if we should travel northwards , the north star would rise continually higher and higher , until , if we could reach the pole of the earth , that ...
Strona 38
... less of the light is lost on passing through the glass than is absorbed by the mirror , and the mirror is very liable to be clouded or tarnished ; so that there is not so great a difference in the two in- struments , in regard to ...
... less of the light is lost on passing through the glass than is absorbed by the mirror , and the mirror is very liable to be clouded or tarnished ; so that there is not so great a difference in the two in- struments , in regard to ...
Strona 39
... less an ornament to it than the more expensive statues with which some people of fortune adorn theirs . I will therefore , before concluding this letter , offer you a few directions for using the telescope . Some states of weather ...
... less an ornament to it than the more expensive statues with which some people of fortune adorn theirs . I will therefore , before concluding this letter , offer you a few directions for using the telescope . Some states of weather ...
Strona 40
... less change of temperature . The watery vapor of the atmosphere , also , is more perfectly dissolved in hot than in cold air , and the more water air contains , provided it is in a state of perfect solution , the clearer it is . A ...
... less change of temperature . The watery vapor of the atmosphere , also , is more perfectly dissolved in hot than in cold air , and the more water air contains , provided it is in a state of perfect solution , the clearer it is . A ...
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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...