AstronomyLongman, Rees, Orme, Brown, Green, & Longman, 1834 - 422 pages |
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Page v
... Sphere . -Measurement of Heights by the Barometer . - 107 CHAP . IV . OF URANOGRAPHY . - Construction of Celestial Maps and Globes by Observations of Right Ascension and Declination . Celestial Objects distinguished into Fixed and ...
... Sphere . -Measurement of Heights by the Barometer . - 107 CHAP . IV . OF URANOGRAPHY . - Construction of Celestial Maps and Globes by Observations of Right Ascension and Declination . Celestial Objects distinguished into Fixed and ...
Page 2
... sphere ; he finds it , in comparison , a mere point ; so lost - even in the minute system to which it belongs - as to be invisible and unsuspected from some of its principal and remoter members . ( 3. ) There is hardly any thing which ...
... sphere ; he finds it , in comparison , a mere point ; so lost - even in the minute system to which it belongs - as to be invisible and unsuspected from some of its principal and remoter members . ( 3. ) There is hardly any thing which ...
Page 16
... sphere or globe . ( 23. ) A diagram will elucidate this . Suppose the earth to be represented by the sphere LHNQ , whose centre is C , and let A , G , M be stations at different elevations above various points of its surface ...
... sphere or globe . ( 23. ) A diagram will elucidate this . Suppose the earth to be represented by the sphere LHNQ , whose centre is C , and let A , G , M be stations at different elevations above various points of its surface ...
Page 17
... sphere , the visible area , i.e. the spherical segment or slice NO PQ , increases ; 2dly , that the distance of the visible horizon * or bound- ary of our view from the eye , viz . the line MN , increases ; and , 3dly , that the angle ...
... sphere , the visible area , i.e. the spherical segment or slice NO PQ , increases ; 2dly , that the distance of the visible horizon * or bound- ary of our view from the eye , viz . the line MN , increases ; and , 3dly , that the angle ...
Page 18
... sphere at m , as is the line xy . ( 24. ) This explains what is meant by the dip of the horizon . M m , which is perpendicular to the ge- neral surface of the sphere at m , is also the direction in which a plumb_line * would hang ; for ...
... sphere at m , as is the line xy . ( 24. ) This explains what is meant by the dip of the horizon . M m , which is perpendicular to the ge- neral surface of the sphere at m , is also the direction in which a plumb_line * would hang ; for ...
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action altitude amount angle angular angular velocity appear arise ascertained astronomical atmosphere attraction axis body bright calculation called cause celestial circle clock comet described determined deviation diameter difference direction disc distance disturbing force diurnal motion double stars earth earth's surface ecliptic effect ellipse equal equator equinoctial equinox error exact exactly excentricity fixed globe gravity heavens heliocentric hemisphere horizon inclination inequality instance instrument interval Jupiter latitude latter law of Kepler length less light longitude lunar magnitude mass mean measure meridian moon moon's nearly nodes nutation object observed orbit parallax perihelion period planet planetary pole portion position precession produce proportion radius reckoned refraction respect retrograde revolution revolving right ascension ring rotation round satellites Saturn seen sidereal sidereal period situation solar spectator sphere spherical stars station sun's suppose synodical period telescope tion triangle Uranus variation velocity visible whole zenith