Letters on Astronomy: Addressed to a Lady; in which the Elements of the Science are Familiarly Explained in Connexion with Its Literary HistoryMarsh, Capen, Lyon and Webb, 1841 - 419 |
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Strona 22
... turned about twenty - three and a half de- grees out of a perpendicular direction , making an angle with the plane itself of sixty - six and a half degrees . The equator , therefore , must be turned the same dis- tance out of a ...
... turned about twenty - three and a half de- grees out of a perpendicular direction , making an angle with the plane itself of sixty - six and a half degrees . The equator , therefore , must be turned the same dis- tance out of a ...
Strona 37
... turned with the finger . In facility of management , it has greatly the advantage of Herschel's telescope . Moreover , the sky of England is so much of the time unfavorable for as- tronomical observation , that one hundred good hours ...
... turned with the finger . In facility of management , it has greatly the advantage of Herschel's telescope . Moreover , the sky of England is so much of the time unfavorable for as- tronomical observation , that one hundred good hours ...
Strona 57
... turned , to bring the reflected body to coincide with the other body , becomes a measure of the angular distance between them . By keeping this principle in view , you will be able to understand the use of the several parts of the ...
... turned , to bring the reflected body to coincide with the other body , becomes a measure of the angular distance between them . By keeping this principle in view , you will be able to understand the use of the several parts of the ...
Strona 60
... turning round on its axis , the sun is moving in the same direction , so that , when we have come round under the same celestial meridian from which we started , we do not find the sun there , but he has moved eastward nearly a degree ...
... turning round on its axis , the sun is moving in the same direction , so that , when we have come round under the same celestial meridian from which we started , we do not find the sun there , but he has moved eastward nearly a degree ...
Strona 67
... turned topsyturvy . The gods no longer knew what belonged to them ; but , after paying their visits on certain feast- days , and expecting to meet with good cheer , as usual , they were under the disagreeable necessity of returning back ...
... turned topsyturvy . The gods no longer knew what belonged to them ; but , after paying their visits on certain feast- days , and expecting to meet with good cheer , as usual , they were under the disagreeable necessity of returning back ...
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angle appear ascertain astronomers atmosphere attraction axis called celestial centre circle comet conjunction constellation degrees diameter direction discovery disk distance diurnal motion doctrine double stars earth ecliptic equal equator equinox exhibited fact fixed stars force Galileo globe gravity greater greatest half Halley's comet heavenly bodies heavens Hence Herschel horizon hundred inferior conjunction instrument John Herschel Jupiter Kepler latitude laws length less light longitude lunar lunar eclipse magnitude measure Mercury meridian meteors millions of miles minutes moon moon's motion move Nature nearer nearly node objects observations opposite orbit parallax passing perihelion period phenomena planetary planets pole respect revolve right ascension ring round satellites Saturn seen shadow side space spectator sphere sun's superior planets supposed surface telescope thousand tides tion truth Tycho Tycho Brahe universal gravitation Uranus velocity Venus vernal equinox visible west to east