Outlines of AstronomyLongman, Brown, Green, Longmans, 1851 - 661 стор. |
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Сторінка xi
... solar time . Of the measurements of time . Clocks , chronometers . Of astronomical measurements . Principle of telescopic sights to increase the accuracy of pointing . Simplest application of this principle . The transit instrument . Of ...
... solar time . Of the measurements of time . Clocks , chronometers . Of astronomical measurements . Principle of telescopic sights to increase the accuracy of pointing . Simplest application of this principle . The transit instrument . Of ...
Сторінка xii
... solar radation CHAPTER VII . - 205 Of the Moon . Its sidereal period . Its apparent diameter . Its parallax , distance , and real diameter . First approximation to its orbit . An ellipse about the Earth in the focus . Its excentricity ...
... solar radation CHAPTER VII . - 205 Of the Moon . Its sidereal period . Its apparent diameter . Its parallax , distance , and real diameter . First approximation to its orbit . An ellipse about the Earth in the focus . Its excentricity ...
Сторінка xiii
... SOLAR SYSTEM . · 264 Apparent motions of the planets . Their stations and retrogradations . The Sun their natural centre of motion . Inferior planets . Their phases , periods , etc. Dimensions and form of their orbits . Transits across ...
... SOLAR SYSTEM . · 264 Apparent motions of the planets . Their stations and retrogradations . The Sun their natural centre of motion . Inferior planets . Their phases , periods , etc. Dimensions and form of their orbits . Transits across ...
Сторінка xv
... Sanguine stars . Proper motion of the stars . Partly accounted for by a real motion of the Sun. Situa- tion of the solar apex . Agreement of southern and northern stars in giving the same result . Principles on which the CONTENTS . XV.
... Sanguine stars . Proper motion of the stars . Partly accounted for by a real motion of the Sun. Situa- tion of the solar apex . Agreement of southern and northern stars in giving the same result . Principles on which the CONTENTS . XV.
Сторінка xvi
... solar day affected by 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 ...
... solar day affected by 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 ...
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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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