Elementary Lessons in Astronomy |
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Page 5
... miles , while we travel round the sun at a distance of 93,000,000 miles . 15. We thus see how it is that the greater size of the sun is balanced , so to speak , by its greater distance ; the result being that the large distant sun looks ...
... miles , while we travel round the sun at a distance of 93,000,000 miles . 15. We thus see how it is that the greater size of the sun is balanced , so to speak , by its greater distance ; the result being that the large distant sun looks ...
Page 6
... miles away , the more distant ones so far away that light , which travels at the rate of 186,300 miles in a second of time , requires thousands of years to dart from the stars to our eyes ! 17. In spite , however , of this immensity ...
... miles away , the more distant ones so far away that light , which travels at the rate of 186,300 miles in a second of time , requires thousands of years to dart from the stars to our eyes ! 17. In spite , however , of this immensity ...
Page 10
... miles ; some other method , therefore , must be used , and the velocity of light affords us a convenient one . Light travels at the rate of 186,300 miles in a second of time — that is to say , between the beats of the pendulum of an ...
... miles ; some other method , therefore , must be used , and the velocity of light affords us a convenient one . Light travels at the rate of 186,300 miles in a second of time — that is to say , between the beats of the pendulum of an ...
Page 16
... miles a second , or three times faster than our Earth travels round the sun , which is one thousand times faster than an ordinary railway train . 44. Nor is our Sun , which be it remembered is a star , an exception ; it is approaching ...
... miles a second , or three times faster than our Earth travels round the sun , which is one thousand times faster than an ordinary railway train . 44. Nor is our Sun , which be it remembered is a star , an exception ; it is approaching ...
Page 19
... miles , and yet the two stars seem as one to the naked eye . FIG . 2. - The Double - double Star in the constellation Lyra . 1. As seen in an opera - glass . 2. As seen in a small telescope . 3. As seen in a telescope of great power ...
... miles , and yet the two stars seem as one to the naked eye . FIG . 2. - The Double - double Star in the constellation Lyra . 1. As seen in an opera - glass . 2. As seen in a small telescope . 3. As seen in a telescope of great power ...
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Common terms and phrases
angle aphelion appear Assistant Master astronomers atmosphere attraction axis Boötes called Cambridge celestial equator celestial pole celestial sphere centre circle clock College comet constellation determined diameter direction Earth Earth's rotation Earth's surface ecliptic ELEMENTARY equal equatorial equinox exactly eye-piece fact Fcap follows globe GREEK Greenwich heavenly bodies heavens horizon Illustrated inclined Jupiter latitude length lens LESSON light longitude Mars mass measured meridian meteorites meteors miles Moon Moon's motion nearly nebulæ Neptune node object-glass observed occupied orbit parallax path penumbra perihelion planet point of Aries polar pole portion position prism Prof Professor rays refraction represent revolution revolve round right ascension ring round the Sun satellites Saturn seen shadow side sidereal solar day solstice spectrum spots stars Sun's suppose telescope tion transit travel round triangle true sun Uranus Ursa Ursa Major vapour velocity Venus vernal equinox visible
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