Fourteen Weeks in Descriptive Astronomy |
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Page 15
... light , we notice that they change their position with respect to the others . They are therefore called " planets " ( literally , wan- derers ) . Others remain immovable , and shine with a shifting , twinkling light . They are termed ...
... light , we notice that they change their position with respect to the others . They are therefore called " planets " ( literally , wan- derers ) . Others remain immovable , and shine with a shifting , twinkling light . They are termed ...
Page 17
... light from the sun . He introduced the division of the earth's surface into zones , and the theory of the obliquity of the ecliptic . He also predicted an eclipse of the sun which is memorable in ancient history as having terminated a ...
... light from the sun . He introduced the division of the earth's surface into zones , and the theory of the obliquity of the ecliptic . He also predicted an eclipse of the sun which is memorable in ancient history as having terminated a ...
Page 36
... light of the sun ; but with a telescope they can be traced , and an astronomer will find certain stars as well at noon as at midnight . Indeed , when looking at the sky from the bottom of a deep well or lofty chimney , if a bright star ...
... light of the sun ; but with a telescope they can be traced , and an astronomer will find certain stars as well at noon as at midnight . Indeed , when looking at the sky from the bottom of a deep well or lofty chimney , if a bright star ...
Page 45
... Light . HOW WE ARE TO IMAGINE THE SOLAR SYSTEM TO OUR- SELVES . - We are to think of it as suspended in space ; being held up , not by any visible object , but in accordance with the law of Universal Gravitation discovered by Newton ...
... Light . HOW WE ARE TO IMAGINE THE SOLAR SYSTEM TO OUR- SELVES . - We are to think of it as suspended in space ; being held up , not by any visible object , but in accordance with the law of Universal Gravitation discovered by Newton ...
Page 47
... LIGHT OF THE SUN . - This is equal to 5,563 wax - candles held at a distance of one foot from the eye . It would require 800,000 full - moons to pro- duce a day as brilliant as one of cloudless sunshine . THE HEAT OF THE SUN . - The ...
... LIGHT OF THE SUN . - This is equal to 5,563 wax - candles held at a distance of one foot from the eye . It would require 800,000 full - moons to pro- duce a day as brilliant as one of cloudless sunshine . THE HEAT OF THE SUN . - The ...
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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