Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 pages |
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Page xv
... ascertained . Perturbations of Uranus resulting in the discovery of Neptune ยท Page 454 PART III . OF SIDEREAL ASTRONOMY . CHAPTER XV . Of the fixed stars . Their classification by magnitudes . Photometric scale of magnitudes ...
... ascertained . Perturbations of Uranus resulting in the discovery of Neptune ยท Page 454 PART III . OF SIDEREAL ASTRONOMY . CHAPTER XV . Of the fixed stars . Their classification by magnitudes . Photometric scale of magnitudes ...
Page 3
... the necessity of being on every point , within that limit , rather diffuse and copious in explanation , as well as the eminently matured and ascertained character of the science itself , render this course B 2 INTRODUCTION . 3.
... the necessity of being on every point , within that limit , rather diffuse and copious in explanation , as well as the eminently matured and ascertained character of the science itself , render this course B 2 INTRODUCTION . 3.
Page 4
John Frederick William Herschel, Sir John Frederick William Herschel. ascertained character of the science itself , render this course both practicable and eligible . Practicable , because there is now no danger of any revolution in ...
John Frederick William Herschel, Sir John Frederick William Herschel. ascertained character of the science itself , render this course both practicable and eligible . Practicable , because there is now no danger of any revolution in ...
Page 20
... ) , this would be a tolerably good method of ascertaining it . Suppose A and B to be two eminences , whose perpendicular heights A a and Bb ( which B for simplicity , we will suppose to be exactly 20 OUTLINES OF ASTRONOMY .
... ) , this would be a tolerably good method of ascertaining it . Suppose A and B to be two eminences , whose perpendicular heights A a and Bb ( which B for simplicity , we will suppose to be exactly 20 OUTLINES OF ASTRONOMY .
Page 21
... ascertaining the dimensions of the earth , yet it will suffice to afford such an approximation to it as shall be of use in the present stage of the reader's knowledge , and help him to many just con- ceptions , on which account we shall ...
... ascertaining the dimensions of the earth , yet it will suffice to afford such an approximation to it as shall be of use in the present stage of the reader's knowledge , and help him to many just con- ceptions , on which account we shall ...
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Common terms and phrases
amount angle angular appear apsides ascertained astronomical axis bright calculation celestial centre circle comet curve degree described diameter difference direction disc distance disturbing 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 increase inequality instance interval Jupiter latitude latter less light longitude lunar magnitude mass mean measure meridian micrometrical moon moon's motion nearly nebula node normal force nutation object observed orbit parallax perigee perihelion period perturbations planet planetary pole portion position Post 8vo precession proper motion proportion recede recess refraction remarkable respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible vols whole Woodcuts zenith