Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
З цієї книги
Результати 1-5 із 100
Сторінка xii
... diameter . Its parallax , distance , and real diameter . First approximation to its orbit . An ellipse about the Earth in the focus . Its excentricity and inclination . Motion of its nodes and apsides . Of occultations and solar ...
... diameter . Its parallax , distance , and real diameter . First approximation to its orbit . An ellipse about the Earth in the focus . Its excentricity and inclination . Motion of its nodes and apsides . Of occultations and solar ...
Сторінка 16
... diameter , measured with an instrument called the dip sector , is the same ( except under some singular atmospheric circumstances , which produce a temporary dis- tortion of the outline ) , in whatever direction the measure is taken ...
... diameter , measured with an instrument called the dip sector , is the same ( except under some singular atmospheric circumstances , which produce a temporary dis- tortion of the outline ) , in whatever direction the measure is taken ...
Сторінка 17
... diameter . Leaving , at present , out of con- sideration the effect of refraction in the air below M , of which more hereafter , and which always tends , in some degree , to increase that angle , or render it more obtuse , this is the ...
... diameter . Leaving , at present , out of con- sideration the effect of refraction in the air below M , of which more hereafter , and which always tends , in some degree , to increase that angle , or render it more obtuse , this is the ...
Сторінка 18
... diameter of the earth diminishes , being nowhere so gre 180 ° , or two right angles , but falling short of it by some sible quantity , and that more and more the higher we a- The figure exhibits three states or stages of elevation . the ...
... diameter of the earth diminishes , being nowhere so gre 180 ° , or two right angles , but falling short of it by some sible quantity , and that more and more the higher we a- The figure exhibits three states or stages of elevation . the ...
Сторінка 17
... diameter . Leaving , at present , out of consideration the effect of refraction in the air below M , of which more hereafter , and which always tends , in some degree , to increase that angle , or render it more obtuse , this is the ...
... diameter . Leaving , at present , out of consideration the effect of refraction in the air below M , of which more hereafter , and which always tends , in some degree , to increase that angle , or render it more obtuse , this is the ...
Інші видання - Показати все
Outlines of Astronomy John Frederick William Herschel,Sir John Frederick William Herschel Повний перегляд - 1851 |
Загальні терміни та фрази
angle angular appear apsides ascertained astronomical 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 Edition effect elements ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe heavens heliocentric horizon inclination 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 perturbations planet planetary pole portion position Post 8vo precession proper motions proportion recede recess reckoned refraction respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible vols whole Woodcuts zenith
Популярні уривки
Сторінка 674 - A Dictionary of Science, Literature, and Art : Comprising the History, Description, and Scientific Principles of every Branch of Human Knowledge ; with the Derivation and Definition of all the Terms in General Use. Edited by WT BRANDE, FRSL and E.