Astronomical and geographical essaysW. & S. Jones, 1812 - 518 pages |
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Page 35
... has phases , just like the moon , from the fine thin crescent to . the enlightened hemisphere . Her illuminated part is constantly turned towards the sun ; hence its horns are turned towards the east when it is a € 2 OF VENUS . 35.
... has phases , just like the moon , from the fine thin crescent to . the enlightened hemisphere . Her illuminated part is constantly turned towards the sun ; hence its horns are turned towards the east when it is a € 2 OF VENUS . 35.
Page 40
... illuminated part , he will see more or less of her reflected beams ; for only one - half of a globe can be enlightened at once . Hence , while she is making her revolution round the heavens , she undergoes great changes in her ap ...
... illuminated part , he will see more or less of her reflected beams ; for only one - half of a globe can be enlightened at once . Hence , while she is making her revolution round the heavens , she undergoes great changes in her ap ...
Page 41
... illuminates the earth by a light re- flected from the sun , she is reciprocally enlightened , but in a much greater degree by the earth , for the surface is above thirteen times greater than that of the Moon ; and , therefore ...
... illuminates the earth by a light re- flected from the sun , she is reciprocally enlightened , but in a much greater degree by the earth , for the surface is above thirteen times greater than that of the Moon ; and , therefore ...
Page 53
... numberless places between the earth and the nearest fixed stars . Other suns kindle to illuminate other systems , where our sun's rays are unperceived ; but they also are swallowed up in the vast expanse . D3 MACLAURIN'S OBSERVATIONS . 53.
... numberless places between the earth and the nearest fixed stars . Other suns kindle to illuminate other systems , where our sun's rays are unperceived ; but they also are swallowed up in the vast expanse . D3 MACLAURIN'S OBSERVATIONS . 53.
Page 80
... illuminated by all the stars which are above the horizon of that place , yet , when the sun is above the horizon , his light is so strong , that it quite extinguishes the faint light of the stars , and produces day . When the sun goes ...
... illuminated by all the stars which are above the horizon of that place , yet , when the sun is above the horizon , his light is so strong , that it quite extinguishes the faint light of the stars , and produces day . When the sun goes ...
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Other editions - View all
ASTRONOMICAL & GEOGRAPHICAL ES George 1750-1795 Adams,William 1763-1831 Jones No preview available - 2016 |
ASTRONOMICAL & GEOGRAPHICAL ES George 1750-1795 Adams,William 1763-1831 Jones No preview available - 2016 |
Common terms and phrases
angle apparent motion Aries astronomers azimuth body bright bring broad paper circle called Capricorn celestial globe centre comet conjunction dark dial diameter disc distance diurnal motion earth ecliptic edge elevated enlightened equal equator equinoctial equinox fixed stars Georgium Sidus given place greatest elongation heavens hemisphere Herschel horary index hour circle hour-lines illuminated inferior planets inhabitants Jupiter latitude light London longest day longitude magnitude Mars Mercury miles minutes month moon moon's nearer night nodes noon north pole number of degrees observed opposite parallax parallel pass plate polar circle PROBLEM quadrant of altitude rays Rectify the globe retrograde retrograde motion revolution right ascension round the sun satellites Saturn seen semicircle shadow shew ship situation solar spectator sphere strong brass meridian sun appears sun's place superior planet suppose surface telescope terrestrial globe tion tropic tropic of Cancer turn the globe Venus vertical visible west to east zenith
Popular passages
Page 72 - Their names are Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricornus, Aquarius, Pisces; the whole occupying a complete circle, or broad belt, in the heavens, called the Zodiac.
Page 226 - If both the places be situated on the same parallel of latitude, their bearing is either east or west from each other ; if the'y be situated on the same meridian, they bear north and south from each other ; if they be situated on the same rhumb-line, that rhumbline is their bearing : if they be not situated on the same rhumb-line, lay the quadrant of altitude over the. two places, and that rhumb-line which is the nearest of...
Page 54 - Our views of Nature, however imperfect, serve to represent to us, in the most sensible manner, that mighty power which prevails throughout, acting with a force and efficacy that appears to suffer no diminution from the greatest distances of space or intervals of time...
Page 199 - To make this circle answer the purpose, a semicircular wire is placed over it, carrying two indices, one on the east, the other on the west side of the strong brass circle.
Page 308 - By subtracting this from twenty-four hours, we have the length of the shortest night. If we bring the first degree of Capricorn to the brass meridian' and proceed in all respects as before, we shall have the length of the longest night and shortest day. Thus, at Delhi, the...
Page 312 - As the terrestrial globe by turning on its axis represents the real diurnal motion of the earth ; so the celestial globe, by turning on its axis, represents the apparent motion of the heavens.
Page 210 - ... than the hour at the given place, turn the globe eastward till the index has passed over as many hours as are equal to the given...
Page 285 - ... equal parts or degrees, as in the figure. Because the hour-lines are less distant from each other about noon, than in any other part of the dial, it is best to have the centres of these quadrants at a little distance from the centre of the dial-plane...
Page 420 - The grand transition, that there lives and works A soul in all things, and that soul is God. The beauties of the wilderness are His, That make so gay the solitary place Where no eye sees them. And the fairer forms That cultivation glories in are His. He sets the bright procession on its way, And marshals all the order of the year ; He marks the bounds which winter may not pass, And blunts his pointed fury ; in its case, Russet and rude...
Page 83 - THE natural advantages which arise from the position of the earth which we inhabit with respect to the other planets, afford much employment to mathematical speculation, by which it has been discovered, that no other conformation of...