Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка 77
... causes which may pro- duce instrumental derangement , and with all the peculiarities of structure and material of each instrument he possesses , as not to allow himself to be misled by their errors , but to ex- tract from their ...
... causes which may pro- duce instrumental derangement , and with all the peculiarities of structure and material of each instrument he possesses , as not to allow himself to be misled by their errors , but to ex- tract from their ...
Сторінка 81
... cause for what we have noticed . We examine , therefore , the theory of our instrument ; we suppose defects in its ... causes to guide us , may be confounded with laws of nature , as they are mixed up with them in their effects . They ...
... cause for what we have noticed . We examine , therefore , the theory of our instrument ; we suppose defects in its ... causes to guide us , may be confounded with laws of nature , as they are mixed up with them in their effects . They ...
Сторінка 83
... cause or other , the apparent diurnal orbit of every star is distorted from a circular into an oval form , its lower segment being flatter than its upper ; and the deviation being greater the nearer the star approached the horizon , the ...
... cause or other , the apparent diurnal orbit of every star is distorted from a circular into an oval form , its lower segment being flatter than its upper ; and the deviation being greater the nearer the star approached the horizon , the ...
Сторінка 86
... causes of irregularity in the going of clocks and watches which may affect our reckoning of time . Thus we become involved by degrees in more and more delicate instrumental inquiries ; and we speedily find that , in proportion as we ...
... causes of irregularity in the going of clocks and watches which may affect our reckoning of time . Thus we become involved by degrees in more and more delicate instrumental inquiries ; and we speedily find that , in proportion as we ...
Сторінка 88
... causes . Now , the statement of the law of any observed motion in a celestial object can be no other than a proposition ... cause is suddenly removed , the stream flows in its original course , and ceases to run into the receiver . The ...
... causes . Now , the statement of the law of any observed motion in a celestial object can be no other than a proposition ... cause is suddenly removed , the stream flows in its original course , and ceases to run into the receiver . The ...
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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.