Outlines of Astronomy |
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Page xi
... Parallel wire micrometer . Principle of the dupli- cation of images . The heliometer . Double refracting eye - piece . Variable prisin micrometer . Of the position micrometer 76 CHAPTER IV . OF GEOGRAPHY . Of the figure of ( xi )
... Parallel wire micrometer . Principle of the dupli- cation of images . The heliometer . Double refracting eye - piece . Variable prisin micrometer . Of the position micrometer 76 CHAPTER IV . OF GEOGRAPHY . Of the figure of ( xi )
Page xii
John Frederick William Herschel. CHAPTER IV . OF GEOGRAPHY . Of the figure of the Earth . Its exact dimensions . Its form that of equilibrium modified by centrifugal force . Variation of gravity on its surface . Statical and dynamical ...
John Frederick William Herschel. CHAPTER IV . OF GEOGRAPHY . Of the figure of the Earth . Its exact dimensions . Its form that of equilibrium modified by centrifugal force . Variation of gravity on its surface . Statical and dynamical ...
Page xv
... figure of the Earth and other planets on the motions of their satellites . Of the tides . Masses of disturbing bodies deducible from the perturbations they produce . Mass of the Moon , and of Jupiter's satellites , how ascertained ...
... figure of the Earth and other planets on the motions of their satellites . Of the tides . Masses of disturbing bodies deducible from the perturbations they produce . Mass of the Moon , and of Jupiter's satellites , how ascertained ...
Page 28
... figure of the earth ; - the hills , trees , and other objects which roughen its surface , and break and elevate the ... figures . If we ascend a high eminence plain ( for instance , one of the Egyptian pyramids 28 OUTLINES OF ASTRONOMY .
... figure of the earth ; - the hills , trees , and other objects which roughen its surface , and break and elevate the ... figures . If we ascend a high eminence plain ( for instance , one of the Egyptian pyramids 28 OUTLINES OF ASTRONOMY .
Page 29
... figure of a body which , however seen , appears always circular , can be no other than a sphere or globe . ( 22. ) A diagram will elucidate this . Suppose the earth to be repre- sented by the sphere LHNQ , whose centre is C , and let A ...
... figure of a body which , however seen , appears always circular , can be no other than a sphere or globe . ( 22. ) A diagram will elucidate this . Suppose the earth to be repre- sented by the sphere LHNQ , whose centre is C , and let A ...
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Common terms and phrases
altitude amount angle angular appear apsides ascertained astronomers 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 effect ellipse epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity greater heavens heliocentric horizon inclination increase 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 perpendicular perturbations planet planetary pole portion position precession proper motions proportion recede recess reckoned refraction remarkable respect result revolution right ascension rotation round satellites Saturn seen sidereal sidereal day sidereal period situation solar sphere spherical stars station sun's suppose syzygies tangential force telescope tion Uranus variation velocity visible whole zenith