Letters on Astronomy: Addressed to a Lady; in which the Elements of the Science are Familiarly Explained in Connexion with Its Literary HistoryMarsh, Capen, Lyon and Webb, 1841 - 419 |
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Strona 14
... centre of the universe , and that the sun , moon , and stars , revolve about it , every day , from east to west ; in short , that ( 6 the apparent motions of the heavenly bodies are the same 14 LETTERS ON ASTRONOMY .
... centre of the universe , and that the sun , moon , and stars , revolve about it , every day , from east to west ; in short , that ( 6 the apparent motions of the heavenly bodies are the same 14 LETTERS ON ASTRONOMY .
Strona 15
... centre of the solar system , and the earth and all the planets are made to revolve around him , from west to east , while the apparent diurnal motion of the heavenly bodies , from east to west , is explained by the revolution of the ...
... centre of the solar system , and the earth and all the planets are made to revolve around him , from west to east , while the apparent diurnal motion of the heavenly bodies , from east to west , is explained by the revolution of the ...
Strona 17
... centre to the circumference of a circle is called a radius , as C D , C B , or C K. Any part of the circumference of a circle is called an arc , as A B , or B D. An angle is measured by an arc included between Fig . 1 . K B two radii ...
... centre to the circumference of a circle is called a radius , as C D , C B , or C K. Any part of the circumference of a circle is called an arc , as A B , or B D. An angle is measured by an arc included between Fig . 1 . K B two radii ...
Strona 19
... centre of the sphere , and divide it into two equal hemispheres . Small circles are such as do not pass through the centre , but divide the sphere into two unequal parts . The axis of a circle is a straight line passing through its ...
... centre of the sphere , and divide it into two equal hemispheres . Small circles are such as do not pass through the centre , but divide the sphere into two unequal parts . The axis of a circle is a straight line passing through its ...
Strona 22
... centre of the earth and the centre of the sun . It is found , by observation , that the earth does not lie with its axis at right angles to the plane of the ecliptic , so as to make the equator coincide with it , but that it is turned ...
... centre of the earth and the centre of the sun . It is found , by observation , that the earth does not lie with its axis at right angles to the plane of the ecliptic , so as to make the equator coincide with it , but that it is turned ...
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angle appear ascertain astronomers atmosphere attraction axis called celestial centre circle comet conjunction constellation degrees diameter direction discovery disk distance diurnal motion doctrine double stars earth ecliptic equal equator equinox exhibited fact fixed stars force Galileo globe gravity greater greatest half Halley's comet heavenly bodies heavens Hence Herschel horizon hundred inferior conjunction instrument John Herschel Jupiter Kepler latitude laws length less light longitude lunar lunar eclipse magnitude measure Mercury meridian meteors millions of miles minutes moon moon's motion move Nature nearer nearly node objects observations opposite orbit parallax passing perihelion period phenomena planetary planets pole respect revolve right ascension ring round satellites Saturn seen shadow side space spectator sphere sun's superior planets supposed surface telescope thousand tides tion truth Tycho Tycho Brahe universal gravitation Uranus velocity Venus vernal equinox visible west to east