Outlines of AstronomyBlanchard & Lea, 1856 - 557 стор. |
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Сторінка xiii
... comet . Comets without tails , or with more than one . Their extreme tenuity . Their probable structure . Motions conformable to the law of gravity . Actual dimensions of comets . Periodical return of several . Halley's comet . Other ...
... comet . Comets without tails , or with more than one . Their extreme tenuity . Their probable structure . Motions conformable to the law of gravity . Actual dimensions of comets . Periodical return of several . Halley's comet . Other ...
Сторінка xiv
Sir John Frederick William Herschel. Encke's comet - Biela's - Faye's - Lexell's - De Vico's - Brorsen's - Peter's . Great comet of 1843. Its probable identity with several older comets . Great interest at present attached to cometary ...
Sir John Frederick William Herschel. Encke's comet - Biela's - Faye's - Lexell's - De Vico's - Brorsen's - Peter's . Great comet of 1843. Its probable identity with several older comets . Great interest at present attached to cometary ...
Сторінка 295
... COMET . - BIELA'S . — FAYE'S . - LEXELL'S . - DE VICO'S . -BRORSEN'S . - PETERS's . - GREAT COMET OF 1843. - ITS PROBABLE IDENTITY WITH SEVERAL OLDER COMETS . GREAT INTEREST AT PRESENT ATTACHED TO COMETARY ASTRONOMY , AND ITS REASONS ...
... COMET . - BIELA'S . — FAYE'S . - LEXELL'S . - DE VICO'S . -BRORSEN'S . - PETERS's . - GREAT COMET OF 1843. - ITS PROBABLE IDENTITY WITH SEVERAL OLDER COMETS . GREAT INTEREST AT PRESENT ATTACHED TO COMETARY ASTRONOMY , AND ITS REASONS ...
Сторінка 296
... comet was actually observed very near the sun . Several , however , stand on record as having been bright enough to be seen with the naked eye in the daytime , even at noon and in bright sunshine . Such were the comets of 1402 , 1532 ...
... comet was actually observed very near the sun . Several , however , stand on record as having been bright enough to be seen with the naked eye in the daytime , even at noon and in bright sunshine . Such were the comets of 1402 , 1532 ...
Сторінка 297
... comet of 1769 extended 97 ° , and that of the last great comet ( 1843 ) was estimated at about 65 ° when longest . The figure ( fig . 2 , Plate II . ) is a representation of the comet of 1819 - by no means one of the most considerable ...
... comet of 1769 extended 97 ° , and that of the last great comet ( 1843 ) was estimated at about 65 ° when longest . The figure ( fig . 2 , Plate II . ) is a representation of the comet of 1819 - by no means one of the most considerable ...
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Outlines of Astronomy John Frederick William Herschel,Sir John Frederick William Herschel Повний перегляд - 1851 |
Загальні терміни та фрази
altitude amount angle angular appear apsides ascertained astronomers axis bright calculation celestial centre circle comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic effect elements ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric horizon inclination increase inequality instance instrument interval Jupiter latitude latter less light longitude lunar magnitude mass mean measure meridian moon moon's motion nearly nebula node normal force nutation object observed orbit parallax parallel perigee perihelion period perpendicular perturbations planet planetary pole portion position precession proper motions proportion recede recess reckoned refraction remarkable render respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose syzygies tangential force telescope tion Uranus variation velocity visible whole zenith