The Geography of the Heavens and Class-book of Astronomy: Accompanied by a Celestial Atlas |
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Page 7
... Refraction and Twilight , · 297 " XVII . Aurora Borealis and Parallax , · 802 " XVIII . Practical Astronomy - Reflection and Refraction of Light , " XIX . Refractors and Reflectors , 808 813 XX . Problems and Tables , · 828 INDEX TO THE ...
... Refraction and Twilight , · 297 " XVII . Aurora Borealis and Parallax , · 802 " XVIII . Practical Astronomy - Reflection and Refraction of Light , " XIX . Refractors and Reflectors , 808 813 XX . Problems and Tables , · 828 INDEX TO THE ...
Page 291
... refraction of the atmosphere , which , as we shall see hereafter , increases the length of the day , by mak- ing the Sun appear more elevated above the horizon than it really is . All these apparent motions of the Sun are due to the ...
... refraction of the atmosphere , which , as we shall see hereafter , increases the length of the day , by mak- ing the Sun appear more elevated above the horizon than it really is . All these apparent motions of the Sun are due to the ...
Page 297
... refraction of the atmosphere , to exaggerate our estimate of their real magnitudes . THE HORIZONTAL MOON . 636. Both the Sun and Moon are sometimes seen to be elon- gated ... REFRACTION AND TWILIGHT . 297 "XVI Refraction and Twilight,
... refraction of the atmosphere , to exaggerate our estimate of their real magnitudes . THE HORIZONTAL MOON . 636. Both the Sun and Moon are sometimes seen to be elon- gated ... REFRACTION AND TWILIGHT . 297 "XVI Refraction and Twilight,
Page 298
... refraction of the light at C. 639. When light passes obliquely from a denser to a rarer medium , as from water into air , it is refracted from a perpen- dicular towards a horizon- tal . Here the lamp A shines up through water into air ...
... refraction of the light at C. 639. When light passes obliquely from a denser to a rarer medium , as from water into air , it is refracted from a perpen- dicular towards a horizon- tal . Here the lamp A shines up through water into air ...
Page 299
... REFRACTION . B 641. The refracting power of different transparent substances depends mainly upon their density . Water refracts more than air , glass more than water , and ... REFRACTION BY A PRISM . 13 * REFRACTION AND TWILIGHT . 299.
... REFRACTION . B 641. The refracting power of different transparent substances depends mainly upon their density . Water refracts more than air , glass more than water , and ... REFRACTION BY A PRISM . 13 * REFRACTION AND TWILIGHT . 299.
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Common terms and phrases
3d magnitude 4th magnitude angle aphelion appear Arcturus Aries astronomers Auriga axis Beta blue bright star called Cassiopeia celestial Cepheus circle cluster comet constellation Cor Caroli declination degree Delta Denebola diameter distant companion DOUBLE STAR Earth Earth's orbit east ecliptic equator equinoctial figure fixed stars Gamma head heavens hemisphere Herschel horizon Jupiter latitude light longitude luminous Map VIII mean distance Mercury meridian miles minutes Moon Moon's motion naked eye nearly NEBULA node north pole northern Number of stars o'clock observed Orion pale yellow parallax pass perihelion period planet Pleiades polar position principal star Refracting telescopes refraction remarkable represented revolution revolve right ascension rising satellites Saturn seen shadow sidereal Sirius situated small stars solstice southern Sun's supposed surface Taurus TELESCOPIC OBJECTS TELESCOPIC OBJECTS.-Alpha tides tion triangle TRIPLE STAR Ursa Ursa Major Venus vernal equinox visible Zeta Zodiac