Fourteen Weeks in Descriptive Astronomy |
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Page 47
... brilliant as one of cloudless sunshine . THE HEAT OF THE SUN . - The amount of heat we receive annually is sufficient to melt a layer of ice thirty - eight yards in thickness , extending over the whole earth . Yet the sunbeam is only ...
... brilliant as one of cloudless sunshine . THE HEAT OF THE SUN . - The amount of heat we receive annually is sufficient to melt a layer of ice thirty - eight yards in thickness , extending over the whole earth . Yet the sunbeam is only ...
Page 60
... brilliant por- tions of the sun . These are called fa- culo . They vary FACULE . from barely discern- ible , softly - gleaming tracts 1,000 miles long , to lofty , piled - up , mountain- ous regions 40,000 miles long and 4,000 broad ...
... brilliant por- tions of the sun . These are called fa- culo . They vary FACULE . from barely discern- ible , softly - gleaming tracts 1,000 miles long , to lofty , piled - up , mountain- ous regions 40,000 miles long and 4,000 broad ...
Page 89
... brilliant of all the planets . When visible before sunrise , she was called by the ancients Phosphorus , Lucifer , or the Morning Star , and when she shone in the evening after sunset , Hesperus , Ves- per , or the Evening Star . She ...
... brilliant of all the planets . When visible before sunrise , she was called by the ancients Phosphorus , Lucifer , or the Morning Star , and when she shone in the evening after sunset , Hesperus , Ves- per , or the Evening Star . She ...
Page 90
... brilliant about five weeks before and after inferior conjunc- tion , at which time the planet is bright enough to cast a shadow at night . If , in addition , at this time of greatest brilliancy , Venus is at or near her high- est north ...
... brilliant about five weeks before and after inferior conjunc- tion , at which time the planet is bright enough to cast a shadow at night . If , in addition , at this time of greatest brilliancy , Venus is at or near her high- est north ...
Page 96
... brilliant , while it is dark and opaque ; they appear light and airy , while it is solid and firm ; we see in it no motion , while they are constantly changing their position ; they seem mere points in the sky , while it is vast and ...
... brilliant , while it is dark and opaque ; they appear light and airy , while it is solid and firm ; we see in it no motion , while they are constantly changing their position ; they seem mere points in the sky , while it is vast and ...
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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