Outlines of astronomy |
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Page xx
... Precession of the equinoxes . Nutation . Aberration Refraction . Parallax . Summary view of the uranographical cor- rections - 176 · - CHAPTER VI . OF THE SUN'S MOTION . Apparent motion of the Sun not uniform . Its apparent diameter ...
... Precession of the equinoxes . Nutation . Aberration Refraction . Parallax . Summary view of the uranographical cor- rections - 176 · - CHAPTER VI . OF THE SUN'S MOTION . Apparent motion of the Sun not uniform . Its apparent diameter ...
Page xxii
... Precession of the equinoxes explained . Nutation . Prin- ciple of forced vibrations - 378 CHAPTER XIII . THEORY OF THE AXES , PERIHELIA , AND EXCENTRICITIES . Variation of elements in general . Distinction between periodic and secular ...
... Precession of the equinoxes explained . Nutation . Prin- ciple of forced vibrations - 378 CHAPTER XIII . THEORY OF THE AXES , PERIHELIA , AND EXCENTRICITIES . Variation of elements in general . Distinction between periodic and secular ...
Page xxiv
... precession . Incommensurability of the day and year . Its incon- venience . How obviated . The Julian Calendar . Irregularities at its first introduction . Reformed by Augustus . Gregorian reformation . Solar and lunar cycles ...
... precession . Incommensurability of the day and year . Its incon- venience . How obviated . The Julian Calendar . Irregularities at its first introduction . Reformed by Augustus . Gregorian reformation . Solar and lunar cycles ...
Page 190
... PRECESSION OF THE EQUINOXES . - NUTATION . —ABERRATION . - REFRACTION . - PARALLAX . — SUMMARY VIEW OF THE URANOGRAPHICAL CORRECTIONS . ( 290. ) THE determination of the relative situations of objects in the heavens , and the ...
... PRECESSION OF THE EQUINOXES . - NUTATION . —ABERRATION . - REFRACTION . - PARALLAX . — SUMMARY VIEW OF THE URANOGRAPHICAL CORRECTIONS . ( 290. ) THE determination of the relative situations of objects in the heavens , and the ...
Page 202
... precession of the equinoxes , because the place of the equinox among the stars , at every subsequent moment , precedes ( with reference to the diurnal motion ) that which it held the moment before . The amount of this motion by which ...
... precession of the equinoxes , because the place of the equinox among the stars , at every subsequent moment , precedes ( with reference to the diurnal motion ) that which it held the moment before . The amount of this motion by which ...
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Common terms and phrases
amount angle angular appear apsides ascertained astronomical attraction axis bright calculation celestial circle comet curve described diameter difference direction disc distance disturbed body disturbing force diurnal diurnal motion double stars earth ecliptic Edition effect epoch equal equator equinoctial equinox error exact excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination inequality instance instrument interval Julian period 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 phænomena planet planetary pole portion position precession proper motions proportion recede reckoned 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 vols whole zenith