Outlines of Astronomy |
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Page xvii
... unexpected connection with periodic comets in some instances , presents the latter class of bodies under a new aspect , increasing , а if anything can increase , the mysterious interest which already PREFACE TO THE TENTH EDITION.
... unexpected connection with periodic comets in some instances , presents the latter class of bodies under a new aspect , increasing , а if anything can increase , the mysterious interest which already PREFACE TO THE TENTH EDITION.
Page xviii
Sir John Frederick William Herschel. if anything can increase , the mysterious interest which already hangs about them . The group of asteroids , too , has received an accession of no less than fifteen to their list as it stood at the ...
Sir John Frederick William Herschel. if anything can increase , the mysterious interest which already hangs about them . The group of asteroids , too , has received an accession of no less than fifteen to their list as it stood at the ...
Page xxiii
... increase the accuracy of pointing . Simplest application of this principle . The transit instrument . Of the measurement of angular intervals . Methods of increasing the accuracy of reading . The vernier . The microscope . Of the mural ...
... increase the accuracy of pointing . Simplest application of this principle . The transit instrument . Of the measurement of angular intervals . Methods of increasing the accuracy of reading . The vernier . The microscope . Of the mural ...
Page xxvi
... increase and diminu- tion . Average effect in a whole revolution . Compensation in a com- plete revolution of the nodes . Lagrange's theorem of the stability of the inclinations of the planetary orbits . Change of obliquity of the ...
... increase and diminu- tion . Average effect in a whole revolution . Compensation in a com- plete revolution of the nodes . Lagrange's theorem of the stability of the inclinations of the planetary orbits . Change of obliquity of the ...
Page 18
... increase that angle , or render it more obtuse , this is the angle measured by the dip sector . Now , it is evident ... increases ; 2dly , that the distance of the visible horizon * or boundary of our view from the eye , • Opigw , to ...
... increase that angle , or render it more obtuse , this is the angle measured by the dip sector . Now , it is evident ... increases ; 2dly , that the distance of the visible horizon * or boundary of our view from the eye , • Opigw , to ...
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Common terms and phrases
amount angle angular appear apsides ascertained astronomical atmosphere attraction axis bright calculation celestial circle coincidence comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic effect ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination inequality instance instrument interval Jupiter latitude latter less light longitude lunar magnitude mass mean measure meridian micrometrical moon moon's nearly nebula node normal force nutation object observed orbit parallax parallel perigee perihelion period perturbations phænomena phænomenon planet planetary pole portion position precession precisely proper motion proportion recede recess refraction remarkable respect result revolution revolving right ascension rotation round satellites Saturn seen sidereal sidereal day situation solar sphere spherical stars station sun's suppose surface syzygies tangential force telescope tion Uranus variation velocity visible whole zenith