Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка xv
... mean motion . Interpretation of the constant part of these ine- qualities . Annual equation of the Moon . Her secular acceleration . Lunar inequalities due to the action of Venus . Effect of the sphe- roidal figure of the Earth and ...
... mean motion . Interpretation of the constant part of these ine- qualities . Annual equation of the Moon . Her secular acceleration . Lunar inequalities due to the action of Venus . Effect of the sphe- roidal figure of the Earth and ...
Сторінка 30
... mean state , the amount of refraction is greater than its mean amount ; when lower , less : and , 6thly . That in one and the same state of the barometer the refraction is greater , the colder the air . The variation , owing to these ...
... mean state , the amount of refraction is greater than its mean amount ; when lower , less : and , 6thly . That in one and the same state of the barometer the refraction is greater , the colder the air . The variation , owing to these ...
Сторінка 35
... means of judging of their distances from him , would refer them , in the direc- tions in which they were seen from his station , to the con- cave surface of an imaginary sphere , having his eye for a centre , and its surface at some ...
... means of judging of their distances from him , would refer them , in the direc- tions in which they were seen from his station , to the con- cave surface of an imaginary sphere , having his eye for a centre , and its surface at some ...
Сторінка 79
... mean or average of the results obtained , this class of errors may be so far subdued , by setting them to destroy ... means of de- tection of all mechanical defects which elude by their mi- nuteness every other mode of detection . What ...
... mean or average of the results obtained , this class of errors may be so far subdued , by setting them to destroy ... means of de- tection of all mechanical defects which elude by their mi- nuteness every other mode of detection . What ...
Сторінка 82
... mean , which is one of the chief modes by which precision is attained in practical astronomy . Suppose , for example , the principle of an instrument required that a circle should be concentric with the axis on which it is made to turn ...
... mean , which is one of the chief modes by which precision is attained in practical astronomy . Suppose , for example , the principle of an instrument required that a circle should be concentric with the axis on which it is made to turn ...
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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.