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Page 45
... called the equator , at any point of which , indifferently , if he take up his station and recommence his observations , he will find that he has both the centres of diurnal motion CHAP . I. EFFECT OF CHANGE OF LATITUDE . 45.
... called the equator , at any point of which , indifferently , if he take up his station and recommence his observations , he will find that he has both the centres of diurnal motion CHAP . I. EFFECT OF CHANGE OF LATITUDE . 45.
Page 46
... equator ) the whole sphere will have passed in review over him — the whole hemisphere with which he began his night's observation will have been carried down beneath him , and the entire opposite one brought up from below . ( 65. ) If ...
... equator ) the whole sphere will have passed in review over him — the whole hemisphere with which he began his night's observation will have been carried down beneath him , and the entire opposite one brought up from below . ( 65. ) If ...
Page 55
... equator is , therefore , a plane perpendicular to the earth's axis , and passing through its centre . The ce- lestial equator is a great circle of the heavens , marked out by the indefinite extension of the plane of the ter- restrial ...
... equator is , therefore , a plane perpendicular to the earth's axis , and passing through its centre . The ce- lestial equator is a great circle of the heavens , marked out by the indefinite extension of the plane of the ter- restrial ...
Page 56
... equator , measured on its own terrestrial meridian : it is reckoned in degrees , minutes , and seconds , from 0 up to 90 ° , and northwards or southwards according to the hemisphere the place lies in . Thus , the observatory at ...
... equator , measured on its own terrestrial meridian : it is reckoned in degrees , minutes , and seconds , from 0 up to 90 ° , and northwards or southwards according to the hemisphere the place lies in . Thus , the observatory at ...
Page 57
... equator intercepted between the meridian of the place and that of Greenwich ; or , which is the same thing , by the spherical angle at the pole in- cluded between these meridians . As latitude is reckoned north or south , so longitude ...
... equator intercepted between the meridian of the place and that of Greenwich ; or , which is the same thing , by the spherical angle at the pole in- cluded between these meridians . As latitude is reckoned north or south , so longitude ...
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Common terms and phrases
altitude amount angle angular appear arise ascertained astronomical ation atmosphere axis body calculation called cause celestial centre centrifugal force circle clock comet course degree described determined diameter difference direction distance disturbing diurnal motion double stars earth earth's surface ecliptic effect ellipse equal equator equatorial equinoctial equinox error exact exactly excentricity fixed force globe gravity heavens heliocentric hemisphere horizon hour angle inclination instance instrument interval Jupiter latitude latter length longitude lunar magnitude mass mean measured meridian moon moon's mural circle nature nearly nodes nutation object observed orbit parallax parallel perihelion period planet polar pole portion position precession proportion rays reckoning refraction render respect revolution revolve right ascension 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 vertical visible weight whole zenith
Popular passages
Page 194 - Capricorn; because the sun, at the respective solstices, is situated in the division, or signs of the ecliptic so denominated. Of these signs there are twelve, each occupying 30° of its circumference. They commence at the vernal equinox, and are named in order — Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricornus, Aquarius, Pisces.
Page 6 - SACRED HISTORY OF THE WORLD, Attempted to be Philosophically considered, in a Series of Letters to a Son. By SHARON TURNER, FSA and RASL New Edition, edited by the Rev.
Page 224 - that every particle of matter in the universe attracts every other particle, with a force whose direction is that of the line joining the two, and whose magnitude is directly as the product of their masses, and inversely as the square of their distances from each other.
Page 275 - Jupiter a moderate-sized orange, in a circle nearly half a mile across; Saturn a small orange, on a circle of four-fifths of a mile...
Page 374 - This earth ? reciprocal, if land be there, Fields and inhabitants. Her spots thou seest As clouds, and clouds may rain, and rain produce Fruits in her soften'd soil, for some to eat Allotted there ; and other suns, perhaps, With their attendant moons, thou wilt descry, Communicating male and female light, Which two great sexes animate the world, Stored in each orb, perhaps, with some that live...
Page 375 - Thus a yellow colour predominating in the light of the brighter star, that of the less bright one in the same field of view will appear blue ; while, if the tint of the brighter star verge to crimson, that of the other will exhibit a tendency to green — or even appear as a vivid green, under favourable circumstances.
Page 201 - The sun's rays are the ultimate source of almost every motion which takes place on the surface of the earth. By its heat are produced all winds, and those disturbances in the electric equilibrium of the atmosphere which give rise to the phenomena of lightning, and probably also to those of terrestrial magnetism and the aurora.
Page 221 - That it is our own immediate consciousness of effort when we exert force to put matter in motion, or to oppose and neutralize force, which gives us this internal conviction of power and causation so far as it refers to the material world, and compels us to believe that whenever we see material objects put in motion from a state of rest, or deflected from their rectilinear paths and changed in their velocities if already in motion, it is in consequence of such an effort somehow exerted, though not...
Page 6 - INTRODUCTION TO GEOLOGY. Intended to convey Practical Knowledge of the Science, and comprising the most important recent discoveries ; with explanations of the facts and phenomena which serve to confirm or invalidate various Geological Theories. By ROBERT BAKEWELL.