Astronomy, as it is Known at the Present Day: With an Account of the Nature and Use of Astronomical Instruments, the Manner of Calculating the Notes of the Calendar, the Distances and Magnitudes of the Planets, and a Number of Other Useful and Interesting Calculations in AstronomyW. Cole, 1825 - 166 من الصفحات |
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الصفحة 8
... centre . 2. The Diameter of a Sphere is any straight line passing through the centre , and limited on each side by the surface of the sphere . 3. The Radius of a Sphere , or Circle , is half the diameter . 4. The Circumference of a ...
... centre . 2. The Diameter of a Sphere is any straight line passing through the centre , and limited on each side by the surface of the sphere . 3. The Radius of a Sphere , or Circle , is half the diameter . 4. The Circumference of a ...
الصفحة 9
... centre of the earth , and as it is seen from a point on the surface of the earth . This is called the diurnal parallax , to distinguish it from the annual parallax , which is the difference between the apparent places of an object in ...
... centre of the earth , and as it is seen from a point on the surface of the earth . This is called the diurnal parallax , to distinguish it from the annual parallax , which is the difference between the apparent places of an object in ...
الصفحة 10
... centre ; S the lower Focus , or that in which the sun is placed ; F the higher Focus ; P the lower Apsis ; and A the higher Apsis . 27. Although the Primary planets have all nearly the same common focus in which the sun is situated ...
... centre ; S the lower Focus , or that in which the sun is placed ; F the higher Focus ; P the lower Apsis ; and A the higher Apsis . 27. Although the Primary planets have all nearly the same common focus in which the sun is situated ...
الصفحة 11
... centre , called their aris . In some of the planets this axis is nearly perpendicular to the plane of its orbit ; and in others it is inclined to the plane of its orbit . On this depends the change of seasons in the planet ; for the ...
... centre , called their aris . In some of the planets this axis is nearly perpendicular to the plane of its orbit ; and in others it is inclined to the plane of its orbit . On this depends the change of seasons in the planet ; for the ...
الصفحة 12
... centres of the earth and sun , as she is at the time of new and full moon . This inequality sometimes amounts to 2 ° 51 ... centre of the path or orbit it describes , and prevents it from flying off . 51. Penumbra , a faint shadow which ...
... centres of the earth and sun , as she is at the time of new and full moon . This inequality sometimes amounts to 2 ° 51 ... centre of the path or orbit it describes , and prevents it from flying off . 51. Penumbra , a faint shadow which ...
طبعات أخرى - عرض جميع المقتطفات
Astronomy, as It Is Known at the Present Day <span dir=ltr>George G. Carey</span> لا تتوفر معاينة - 2015 |
عبارات ومصطلحات مألوفة
altitude angle appear ascertained astronomers atmosphere Aurora Borealis axis calculations called centre circle clouds colours Comets constellation degrees density diameter direction disc discovered diurnal motion Dominical letter earth's orbit eccentric anomaly eclipse equal equator equinox fixed stars following figure glass globe gravity greater greatest heat heavenly bodies heavens height Hence Herschel horizon inferior conjunction Julius Cæsar Jupiter known latitude length light longitude luminous lunar magnitude mean distance Mercury meridian miles minutes moon moon's move nearly night object obliquity observed occasioned opposite parallax passing period phenomena philosophers poles produced Ptolemy quantity of matter rainbow rays refraction retrograde motion revolution round revolve right ascension rise round the earth round the sun satellites Saturn seen shadow shines sidereal solar spherical sun and moon sun's supposed surface telescope tides tion Tycho Tychonic systems Uranus velocity Venus visible
مقاطع مشهورة
الصفحة 110 - Sometime we see a cloud that's dragonish ; A vapour sometime like a bear or lion, A tower'd citadel, a pendent rock, A forked mountain, or blue promontory With trees upon't, that nod unto the world, And mock our eyes with air : thou hast seen these signs ; They are black vesper's pageants.
الصفحة 100 - Meantime, refracted from yon eastern cloud, Bestriding earth, the grand ethereal bow Shoots up immense; and every hue unfolds, In fair proportion, running from the red To where the violet fades into the sky.
الصفحة 130 - With light and heat refulgent. Then Thy sun Shoots full perfection through the swelling year: And oft Thy voice in dreadful thunder speaks : And oft...
الصفحة 15 - These are thy glorious works, Parent of good, Almighty ! thine this universal frame, Thus wondrous fair: thyself how wondrous then, Unspeakable ! who sitt'st above these heavens To us invisible, or dimly seen In these thy lowest works; yet these declare Thy goodness beyond thought, and power divine.
الصفحة 23 - Had in her sober livery all things clad; Silence accompanied, for beast and bird, They to their grassy couch, these to their nests, Were slunk, all but the wakeful nightingale; She all night long her amorous descant* sung; Silence was pleased: now...
الصفحة 16 - Hither, as to their fountain, other stars Repairing, in their golden urns draw light...
الصفحة 116 - The rising vapours catch the silver light ; Thence fancy measures, as they parting fly, Which first will throw its shadow on the eye, Passing the source of light ; and thence away, Succeeded quick by brighter still than they.
الصفحة 64 - ... a degree of brightness about as strong as that with which such a coal would be seen to glow in faint daylight.
الصفحة 68 - Next glaring wat'ry thro' the Bull he moves; The am'rous Twins admit his genial ray ; Now burning, thro' the Crab he takes his way ; The Lion flaming, bears the solar power; The Virgin faints beneath the sultry shower. Now the just Balance weighs his equal force, The slimy Serpent swelters in his course; The sabled Archer clouds his languid face ; The Goat, with tempests, urges on his race.
الصفحة 111 - Where, midst the changeful scenery, ever new, Fancy a thousand wondrous forms descries, More wildly great than ever pencil drew, Rocks, torrents, gulfs, and shapes of giant size, And glitt'ring cliffs on cliffs, and fiery ramparts, rise.