Letters on Astronomy: In which the Elements of the Science are Familialry [!] Explained ... With Numerous EngravingsHarper & Brothers, 1840 - 427 |
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Strona 14
... is at rest in the centre of the universe , and that the sun , moon , and stars , revolve about it , every day , from east to west ; in short , that the apparent motions of the heavenly bodies are the same 14 LETTERS ON ASTRONOMY .
... is at rest in the centre of the universe , and that the sun , moon , and stars , revolve about it , every day , from east to west ; in short , that the apparent motions of the heavenly bodies are the same 14 LETTERS ON ASTRONOMY .
Strona 17
... centre to the circumference of a circle is called a radius , as CD , C B , or C K. Any part of the circumference of a circle is called an arc , as A B , or B D. An angle is measured by an arc included between I Fig . 1 . K A two radii ...
... centre to the circumference of a circle is called a radius , as CD , C B , or C K. Any part of the circumference of a circle is called an arc , as A B , or B D. An angle is measured by an arc included between I Fig . 1 . K A two radii ...
Strona 19
... centre of the sphere , and divide it into two equal hemispheres . Small circles are such as do not pass through the centre , but divide the sphere into two unequal parts . The axis of a circle is a straight line . passing through its ...
... centre of the sphere , and divide it into two equal hemispheres . Small circles are such as do not pass through the centre , but divide the sphere into two unequal parts . The axis of a circle is a straight line . passing through its ...
Strona 22
... centre of the earth and the centre of the sun . It is found , by observation , that the earth does not lie with its axis at right angles to the plane of the ecliptic , so as to make the equator coincide with it , but that it is turned ...
... centre of the earth and the centre of the sun . It is found , by observation , that the earth does not lie with its axis at right angles to the plane of the ecliptic , so as to make the equator coincide with it , but that it is turned ...
Strona 26
... centre of the earth , from one tropic to the other , would represen the plane of the ecliptic ; and consequently a line cut round the apple where such a section meets the sur- face , will be the terrestrial ecliptic . The points where ...
... centre of the earth , from one tropic to the other , would represen the plane of the ecliptic ; and consequently a line cut round the apple where such a section meets the sur- face , will be the terrestrial ecliptic . The points where ...
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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...