Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка xi
... measurements of time . Clocks , chronometers . Of astronomical measurements . Principle of telescopic sights to increase the accuracy of pointing . Simplest application of this principle . The transit instrument . Of the measurement of ...
... measurements of time . Clocks , chronometers . Of astronomical measurements . Principle of telescopic sights to increase the accuracy of pointing . Simplest application of this principle . The transit instrument . Of the measurement of ...
Сторінка 7
... measured , nay , when even he has followed up the application of his technical processes , and fairly arrived at his conclusion , there is still something wanting in his mind- not in the evidence , for he has examined each link , and ...
... measured , nay , when even he has followed up the application of his technical processes , and fairly arrived at his conclusion , there is still something wanting in his mind- not in the evidence , for he has examined each link , and ...
Сторінка 16
... 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 , ―properties ...
... 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 , ―properties ...
Сторінка 17
... measure of its apparent angular diameter . Leaving , at present , out of con- sideration the effect of refraction in ... measured by the dip sector . Now , it is evident , 1st , that as the point M is more elevated above m , the point ...
... measure of its apparent angular diameter . Leaving , at present , out of con- sideration the effect of refraction in ... measured by the dip sector . Now , it is evident , 1st , that as the point M is more elevated above m , the point ...
Сторінка 17
... measure of its apparent angular diameter . Leaving , at present , out of consideration the effect of refraction in ... measured by the dip sector . Now , it is evident , 1st , that as the point M is more elevated above m , the point ...
... measure of its apparent angular diameter . Leaving , at present , out of consideration the effect of refraction in ... measured by the dip sector . Now , it is evident , 1st , that as the point M is more elevated above m , the point ...
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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
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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.