Outlines of astronomy |
From inside the book
Results 1-5 of 100
Page xxiii
... fixed stars . Their classification by magnitudes . Photometric scale of magnitudes . Conventional or vulgar scale . Photometric comparison of stars . Distribution of stars over the heavens . Of the Milky Way or galaxy . Its supposed ...
... fixed stars . Their classification by magnitudes . Photometric scale of magnitudes . Conventional or vulgar scale . Photometric comparison of stars . Distribution of stars over the heavens . Of the Milky Way or galaxy . Its supposed ...
Page 16
... fixed supports-- existing insulated in space from contact of every thing ex- ternal , it becomes easy to imagine it in motion - or , rather , difficult to imagine it otherwise ; for , since there is nothing to retain it in one place ...
... fixed supports-- existing insulated in space from contact of every thing ex- ternal , it becomes easy to imagine it in motion - or , rather , difficult to imagine it otherwise ; for , since there is nothing to retain it in one place ...
Page 41
... fixed places on the surface , but shift upon it every moment . Such changes , however , are inconsistent with the idea of a rotation of a body of regular figure about its axis of symmetry , per- formed in free space , and without ...
... fixed places on the surface , but shift upon it every moment . Such changes , however , are inconsistent with the idea of a rotation of a body of regular figure about its axis of symmetry , per- formed in free space , and without ...
Page 43
... fixed mark , it may easily be supposed at rest , and be , itself , mistaken for the common centre about which all the others in that region describe their circles ; or it may be known by its configuration with a very splendid and re ...
... fixed mark , it may easily be supposed at rest , and be , itself , mistaken for the common centre about which all the others in that region describe their circles ; or it may be known by its configuration with a very splendid and re ...
Page 48
... fixed axis . In order to show this , however , it will be necessary to premise a few ob- servations on parallactic ... fix his eye steadily on any ob- ject , but at the same time not entirely withdraw his atten- tion from the general ...
... fixed axis . In order to show this , however , it will be necessary to premise a few ob- servations on parallactic ... fix his eye steadily on any ob- ject , but at the same time not entirely withdraw his atten- tion from the general ...
Other editions - View all
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