Fourteen Weeks in Descriptive Astronomy |
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Page 37
... passing through the centre of the earth , separates the visible from the invisible heavens . The Sensible Horizon is ... passing through the poles of the horizon ( the zenith and nadir ) . The Prime Vertical is a vertical circle passing ...
... passing through the centre of the earth , separates the visible from the invisible heavens . The Sensible Horizon is ... passing through the poles of the horizon ( the zenith and nadir ) . The Prime Vertical is a vertical circle passing ...
Page 38
... longitude ( 15 ° apart ) extended to the Celestial Sphere . The Colures are two principal meridians ; the Equinoctial Colure is the meridian passing through the equinoxes ; the Solstitial Colure is the meridian passing 38 INTRODUCTION .
... longitude ( 15 ° apart ) extended to the Celestial Sphere . The Colures are two principal meridians ; the Equinoctial Colure is the meridian passing through the equinoxes ; the Solstitial Colure is the meridian passing 38 INTRODUCTION .
Page 39
... the meridian passing through the vernal equinox ; as the meridian passing through Greenwich is the point from which terrestrial longitude is measured . Declination is distance from the equinoctial , measured on any SPACE . 39.
... the meridian passing through the vernal equinox ; as the meridian passing through Greenwich is the point from which terrestrial longitude is measured . Declination is distance from the equinoctial , measured on any SPACE . 39.
Page 46
... the sun to the earth , and a noise could be made loud enough to pass that distance , it would require over fourteen years for it to come to us . Suppose a railroad could be built to the sun . An express - 46 THE SOLAR SYSTEM . THE EARTH.
... the sun to the earth , and a noise could be made loud enough to pass that distance , it would require over fourteen years for it to come to us . Suppose a railroad could be built to the sun . An express - 46 THE SOLAR SYSTEM . THE EARTH.
Page 53
... by luminous bridges . The spots are in motion . - They change from day to day ; but they all have a common movement . About fourteen days are required for a spot to pass across the disk of the sun from the eastern sido. THE SUN . 53.
... by luminous bridges . The spots are in motion . - They change from day to day ; but they all have a common movement . About fourteen days are required for a spot to pass across the disk of the sun from the eastern sido. THE SUN . 53.
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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