The Planetary and Stellar Worlds: A Popular Exposition of the Great Discoveries and Theories of Modern Astronomy. In a Series of Ten LecturesOakley & Mason, 1868 - 320 páginas |
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Página 36
... appear , these questions are answered ; and in attaining this answer , the means are reached to separate between the real and apparent motions of the fixed stars , and to study their complex changes , and to rise by slow degrees , to a ...
... appear , these questions are answered ; and in attaining this answer , the means are reached to separate between the real and apparent motions of the fixed stars , and to study their complex changes , and to rise by slow degrees , to a ...
Página 44
... , when it should next appear , would be found . But in this he was disappointed ; for when the moon became first faintly visible in the western sky , the group of stars which had ushered her 44 STRUCTURE OF THE UNIVERSE .
... , when it should next appear , would be found . But in this he was disappointed ; for when the moon became first faintly visible in the western sky , the group of stars which had ushered her 44 STRUCTURE OF THE UNIVERSE .
Página 45
... appear to lag behind the stars , which would by their swifter ve- locity pass by her , and thus occasion in her the ob- served apparent motion , from west to east . We shall see presently how this error was detected . The long and ...
... appear to lag behind the stars , which would by their swifter ve- locity pass by her , and thus occasion in her the ob- served apparent motion , from west to east . We shall see presently how this error was detected . The long and ...
Página 46
... appear as the twilight faded , were found to sink lower and lower towards the horizon , till they were no longer seen ; while new groups were constantly appearing in the east . These wonderful changes , so strange and inexpli- cable ...
... appear as the twilight faded , were found to sink lower and lower towards the horizon , till they were no longer seen ; while new groups were constantly appearing in the east . These wonderful changes , so strange and inexpli- cable ...
Página 50
... appear in the east ? With how much anxiety must this primitive discoverer have watched in the morning twilight ? Day after day he sought his solitary post , and marked the rising stars , slowly lift- ing themselves above the eastern ...
... appear in the east ? With how much anxiety must this primitive discoverer have watched in the morning twilight ? Day after day he sought his solitary post , and marked the rising stars , slowly lift- ing themselves above the eastern ...
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Términos y frases comunes
absolute accomplished actually aphelion appear astonishing astronomer axis beautiful body bright celestial sphere centre centrifugal force circle cluster comet commenced computed constellations curve detected determined diameter direction discovered discovery double stars earth earth's orbit eccentricity eclipse efforts entire equal equator examination existence fact finally fixed stars force forever grand Halley's comet heavens Herschel inclined increase instrument investigation Jupiter Kepler law of gravitation laws of Kepler light limits magnitude matter mean distance mighty miles Milky millions mind moon moon's motion move movements mysterious nearly nebula night object observation observatory orbs parallax pass perihelion phenomena philosopher planet planetary planetary orbits position precisely present primitive problem proper motion reached remarkable retrograde motion revealed revolving round satellites Saturn seen slowly solar system sphere Struve sun and moon sun's sweeping tance telescope theory thousand tion truth Uranus vast velocity visible wonderful