Fourteen Weeks in Descriptive Astronomy |
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Page 14
... distances , their magnificent retinue of suns . The powers of the mind are aroused , and eager questionings crowd upon ... distance of many of the stars , and of all the planets ; computed their weight and size , their days , years , and ...
... distances , their magnificent retinue of suns . The powers of the mind are aroused , and eager questionings crowd upon ... distance of many of the stars , and of all the planets ; computed their weight and size , their days , years , and ...
Page 29
... distance is to the cube of Mars ' distance ; or , representing the earth's time of revolu- tion by P , and her distance from the sun by p , then letting D and d represent the same in another planet , we have the proportion P2 : D2 :: p3 ...
... distance is to the cube of Mars ' distance ; or , representing the earth's time of revolu- tion by P , and her distance from the sun by p , then letting D and d represent the same in another planet , we have the proportion P2 : D2 :: p3 ...
Page 32
... distance out in space ? Does it not reach the moon ? " Laws of Motion . - To understand the philosophy of the reasoning that now occupied the mind of Newton , let us apply the laws of motion as we have learned them in Philosophy . When ...
... distance out in space ? Does it not reach the moon ? " Laws of Motion . - To understand the philosophy of the reasoning that now occupied the mind of Newton , let us apply the laws of motion as we have learned them in Philosophy . When ...
Page 33
... distance . He knew ( according to the measurement then received ) that a body on the surface of the earth is four thousand miles from the centre . He applied this imaginary law . Sup- pose it is removed four thousand miles from the ...
... distance . He knew ( according to the measurement then received ) that a body on the surface of the earth is four thousand miles from the centre . He applied this imaginary law . Sup- pose it is removed four thousand miles from the ...
Page 34
... distance from the circumference to the centre of the earth . He has- tened home , inserted this new value in his calcula- tions , and soon found that the result would be cor- rect . Overpowered by the thought of the grand truth just ...
... distance from the circumference to the centre of the earth . He has- tened home , inserted this new value in his calcula- tions , and soon found that the result would be cor- rect . Overpowered by the thought of the grand truth just ...
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Common terms and phrases
ancients Andromeda angle aphelion appear Aries astronomers atmosphere axis Boötes bright brilliant Canis Minor Capricornus Cassiopeia cause Celestial Sphere centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavenly bodies heavens Hercules Herschel horizon inclined inferior conjunction inferior planet Jupiter latitude length light luminous lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon's motion move naked eye nearly nebula Neptune night node north pole Orion parallax pass path penumbra perihelion Perseus Pisces polar Polaris precession rays revolve ring rising Saturn seasons seen shine side sidereal sidereal day solar day solar system solstice space spots summer sun's surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible winter Zodiac