Fourteen Weeks in Descriptive Astronomy |
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Page 12
... SIDEREAL SYSTEM . THE STARS THE CONSTELLATIONS NORTHERN CIRCUMPOLAR CONSTELLATIONS EQUATORIAL CONSTELLATIONS SOUTHERN CONSTELLATIONS . 217 219 221 234 • 234 • 242 263 DOUBLE STARS , COLORED STARS , VARIABLE STARS , CLUSTERS , MAGELLANIC ...
... SIDEREAL SYSTEM . THE STARS THE CONSTELLATIONS NORTHERN CIRCUMPOLAR CONSTELLATIONS EQUATORIAL CONSTELLATIONS SOUTHERN CONSTELLATIONS . 217 219 221 234 • 234 • 242 263 DOUBLE STARS , COLORED STARS , VARIABLE STARS , CLUSTERS , MAGELLANIC ...
Page 15
... sidereal journeys , marking their paths to a nicety of which we can scarcely conceive , and at last it has analyzed the structure of the sun and far - off stars , announ- cing the very elements of which they are composed . Observing for ...
... sidereal journeys , marking their paths to a nicety of which we can scarcely conceive , and at last it has analyzed the structure of the sun and far - off stars , announ- cing the very elements of which they are composed . Observing for ...
Page 40
... Sidereal Clock , and Chronographs of the best Observatories . III . THE ECLIPTIC SYSTEM . ( a ) The PRINCIPAL CIRCLE is the Ecliptic . This is the earth's orbit about the sun , or the apparent path of the sun in the heavens . It is ...
... Sidereal Clock , and Chronographs of the best Observatories . III . THE ECLIPTIC SYSTEM . ( a ) The PRINCIPAL CIRCLE is the Ecliptic . This is the earth's orbit about the sun , or the apparent path of the sun in the heavens . It is ...
Page 55
... SIDEREAL REVOLUTION . Synodic and sidereal revolution of the spots . - We can easily understand why we make an allowance for the motion of the earth in its orbit . Suppose a solar spot at a , on a line passing from THE SUN . 55.
... SIDEREAL REVOLUTION . Synodic and sidereal revolution of the spots . - We can easily understand why we make an allowance for the motion of the earth in its orbit . Suppose a solar spot at a , on a line passing from THE SUN . 55.
Page 56
... sidereal revolution . The spots apparently do not always move in straight lines . Sometimes their path curves toward MARCH . JUNE . SEPTEMBER Fig . the north , and sometimes toward the south , as in the figure . This can be explained ...
... sidereal revolution . The spots apparently do not always move in straight lines . Sometimes their path curves toward MARCH . JUNE . SEPTEMBER Fig . the north , and sometimes toward the south , as in the figure . This can be explained ...
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Common terms and phrases
ancients Andromeda angle aphelion appearance Aries astronomers atmosphere axis body Boötes bright brilliant Canis Minor Capricornus Cassiopeia celestial centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk Draco earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune node north pole orbit Orion parallax pass path penumbra perihelion Perseus Pisces planet Polaris precession rays revolve ring rising Saturn seasons seen shadow shines shower sidereal sidereal day solar day solar system space spots summer sun's superior planet surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible zodiac