Elementary Lessons in Astronomy |
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Page 44
... feet in diameter , a pea at the distance of 215 feet will represent the Earth ; and let us add , the nearest fixed star would be represented by a similar globe placed at the distance of 11,000 miles . 103. More than 1,300,000 Earths ...
... feet in diameter , a pea at the distance of 215 feet will represent the Earth ; and let us add , the nearest fixed star would be represented by a similar globe placed at the distance of 11,000 miles . 103. More than 1,300,000 Earths ...
Page 66
... an idea of the comparative sizes of the Earth and Sun , and of the dis- tance between them ; let us now complete the picture . Still taking a globe about two feet in diameter to represent 66 [ CHAP . III . ASTRONOMY .
... an idea of the comparative sizes of the Earth and Sun , and of the dis- tance between them ; let us now complete the picture . Still taking a globe about two feet in diameter to represent 66 [ CHAP . III . ASTRONOMY .
Page 67
... feet in diameter ; the Earth , also a pea , on a circle of 430 feet ; Mars , a rather large pin's head , on a circle of 654 feet ; the asteriods , grains of sand , in orbits of from 1,000 to 1,200 feet ; Jupiter , a moderate - sized ...
... feet in diameter ; the Earth , also a pea , on a circle of 430 feet ; Mars , a rather large pin's head , on a circle of 654 feet ; the asteriods , grains of sand , in orbits of from 1,000 to 1,200 feet ; Jupiter , a moderate - sized ...
Page 74
... Feet . Equatorial diameter Polar diameter •し 41,852,404 41,709,790 Now turn these feet into miles : the difference after all is small ; still it proves that the Earth is not a sphere , but what is called an oblate spheroid . LESSON XII ...
... Feet . Equatorial diameter Polar diameter •し 41,852,404 41,709,790 Now turn these feet into miles : the difference after all is small ; still it proves that the Earth is not a sphere , but what is called an oblate spheroid . LESSON XII ...
Page 99
... Feet . 26,691 measured from the 23,853 floor of the crater Eratosthenes ( central cone ) 15,750 15,870 3,500 Mont Blanc Snowdon • Beer and Mädler have measured thirty - nine mountains higher H 2 CHAP . III . ] 99 THE SOLAR SYSTEM . 30.
... Feet . 26,691 measured from the 23,853 floor of the crater Eratosthenes ( central cone ) 15,750 15,870 3,500 Mont Blanc Snowdon • Beer and Mädler have measured thirty - nine mountains higher H 2 CHAP . III . ] 99 THE SOLAR SYSTEM . 30.
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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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