Fourteen Weeks in Descriptive Astronomy |
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Page 9
... less in a distance whose vastness in any case is beyond the grasp of the mind . In this connection it may be added that the velocity of light ( p . 182 ) , which has been estimated in part on the basis of the solar distance ( Physics ...
... less in a distance whose vastness in any case is beyond the grasp of the mind . In this connection it may be added that the velocity of light ( p . 182 ) , which has been estimated in part on the basis of the solar distance ( Physics ...
Page 22
... less in this superstition . Tiberius , emperor of Rome , practised Astrology . Hippoc- rates himself , the " Father of Medicine " who flour- ished in the 4th century B. C. , ranked it among the most important branches of knowledge for ...
... less in this superstition . Tiberius , emperor of Rome , practised Astrology . Hippoc- rates himself , the " Father of Medicine " who flour- ished in the 4th century B. C. , ranked it among the most important branches of knowledge for ...
Page 40
... less employed . They are measured on the Ecliptic , as circles of Right Ascension ( R. A. ) are now measured on the Equinoctial . The Parallels of Celestial Latitude are now little used , but are small circles drawn parallel to the ...
... less employed . They are measured on the Ecliptic , as circles of Right Ascension ( R. A. ) are now measured on the Equinoctial . The Parallels of Celestial Latitude are now little used , but are small circles drawn parallel to the ...
Page 52
... less than 8 ° nor more than 35 ° of latitude . They seem to herd together - the length of the straggling group being generally par- allel to the equator . The size of the spots . - It is not uncommon to find a spot with a surface larger ...
... less than 8 ° nor more than 35 ° of latitude . They seem to herd together - the length of the straggling group being generally par- allel to the equator . The size of the spots . - It is not uncommon to find a spot with a surface larger ...
Page 53
... less than 186,000 miles long , and had an area of twenty - five billion square miles . If these are deep openings in the luminous atmos- phere of the sun , what an abyss must that be at " the bottom of which our earth could lie like a ...
... less than 186,000 miles long , and had an area of twenty - five billion square miles . If these are deep openings in the luminous atmos- phere of the sun , what an abyss must that be at " the bottom of which our earth could lie like a ...
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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