Introduction to Astronomy: For the Use of Science Classes and Elementary and Middle Class SchoolsG. P. Putnam's sons, 1873 - 174 páginas |
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Página v
... , 44 CHAPTER III . I. LAWS OF PLANETARY MOTION ,. 46 • II . OF THE UNIVERSAL LAW OF GRAVITATION , 51 · III . PARALLAX , 56 · IV . THE ABERRATION OF LIGHT , 62 · QUESTIONS , 64 · I. THE SOLAR SYSTEM , . CHAPTER IV . PAGE.
... , 44 CHAPTER III . I. LAWS OF PLANETARY MOTION ,. 46 • II . OF THE UNIVERSAL LAW OF GRAVITATION , 51 · III . PARALLAX , 56 · IV . THE ABERRATION OF LIGHT , 62 · QUESTIONS , 64 · I. THE SOLAR SYSTEM , . CHAPTER IV . PAGE.
Página 9
... motions , distances , or magnitudes of the heavenly bodies , it is necessary that we should have correct ideas of the size and form of the Earth itself . That its surface is curved , and its whole figure more or less spherical , appears ...
... motions , distances , or magnitudes of the heavenly bodies , it is necessary that we should have correct ideas of the size and form of the Earth itself . That its surface is curved , and its whole figure more or less spherical , appears ...
Página 13
... motion of the stars . A few hours ' observation of the heavens upon a starry night suffices to show a motion of all the stars from east to west . If any person will station himself so as to have a full view of the northern portion of ...
... motion of the stars . A few hours ' observation of the heavens upon a starry night suffices to show a motion of all the stars from east to west . If any person will station himself so as to have a full view of the northern portion of ...
Página 14
... motion of the stars to be produced by the revolution of the earth on its axis . The first is known as Foucault's pendulum experiment . If a heavy ball of lead be suspended by a long wire from a fixed support , and be made to oscillate ...
... motion of the stars to be produced by the revolution of the earth on its axis . The first is known as Foucault's pendulum experiment . If a heavy ball of lead be suspended by a long wire from a fixed support , and be made to oscillate ...
Página 15
... motion of the stars is only apparent , that of the earth real ; but the construction of this instrument , and the conditions to be fulfilled in using it , are too complicated to be described here . We have now to discuss an experiment ...
... motion of the stars is only apparent , that of the earth real ; but the construction of this instrument , and the conditions to be fulfilled in using it , are too complicated to be described here . We have now to discuss an experiment ...
Otras ediciones - Ver todas
Introduction to Astronomy - For the Use Od Science Classes and Elementary ... John Isaac Plummer Sin vista previa disponible - 2010 |
Términos y frases comunes
61 Cygni aberration of light altitude amount angle aphelion apparent diameter appear astronomical atmosphere attraction axis bodies bright called cause centre circle colour comet compared conjunction density determined difference direction disc diurnal diurnal motion earth eccentricity effect equal equator equatorial equinox Explain fixed stars force Give gravity greater heavens hemisphere hence horizon inclined inferior conjunction inferior planets interval Jupiter known latitude length less libration longitude lunar eclipse magnitude Mars mass mean distance measured Mercury meridian meteors miles moon moon's motion nearly nebulæ Neptune node object observed opposition orbit parallax pass penumbra perihelion perturbations phenomena planetary point of Aries polar pole position precession radius refraction revolving round right ascensions rings rotation round the sun satellites Saturn seen shadow sidereal sidereal period similar solar day solar eclipse solar system solstice spots sun's supposing surface synodical period syzygy telescope tion transit Uranus velocity Venus visible zenith
Pasajes populares
Página 54 - 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.