Fourteen Weeks in Descriptive Astronomy |
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Page 33
... moon fall toward the earth , i . e . , bend from a straight line , every second ? " For sev- enteen years , with a patience rivalling Kepler's , this philosopher toiled over interminable columns of fig- ures to find how much the moon's ...
... moon fall toward the earth , i . e . , bend from a straight line , every second ? " For sev- enteen years , with a patience rivalling Kepler's , this philosopher toiled over interminable columns of fig- ures to find how much the moon's ...
Page 126
... moon's orbit does not lie par- allel to the ecliptic , but is inclined to it . Now the sun attracts the moon , and ... moon's orbit with the ecliptic travel backward , completing a revolution in about 18 years . During half of this time ...
... moon's orbit does not lie par- allel to the ecliptic , but is inclined to it . Now the sun attracts the moon , and ... moon's orbit with the ecliptic travel backward , completing a revolution in about 18 years . During half of this time ...
Page 142
... moon seems to be a part of a larger circle than the rest of the moon . As we have already said , the moon appears larger on ... moon's rotation on its axis is al- ways performed in the same time , while its move- ment along its orbit is ...
... moon seems to be a part of a larger circle than the rest of the moon . As we have already said , the moon appears larger on ... moon's rotation on its axis is al- ways performed in the same time , while its move- ment along its orbit is ...
Page 143
... moons , they would scarcely make daylight , since the brilliancy of the moon does not exceed 300000 that of the sun . That portion of the moon's surface which is exposed to the sun is supposed to be highly heated , possibly to the ...
... moons , they would scarcely make daylight , since the brilliancy of the moon does not exceed 300000 that of the sun . That portion of the moon's surface which is exposed to the sun is supposed to be highly heated , possibly to the ...
Page 144
... moon , we may distinguish the outline of the unillumined portion of the moon . In England , it is popularly known as " the old moon in the new moon's arms . ' This reflection of the earth's rays must serve to keep the lunar nights quite ...
... moon , we may distinguish the outline of the unillumined portion of the moon . In England , it is popularly known as " the old moon in the new moon's arms . ' This reflection of the earth's rays must serve to keep the lunar nights quite ...
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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