Fourteen Weeks in Descriptive Astronomy |
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Page 7
... Discovery .. The Chemical News . .... Kneeland . PUBLISHERS ' NOTICE . - Teachers will find in each edition of this Series certain changes ; not such , however , as to cause any inconvenience in the use of all the editions in the same ...
... Discovery .. The Chemical News . .... Kneeland . PUBLISHERS ' NOTICE . - Teachers will find in each edition of this Series certain changes ; not such , however , as to cause any inconvenience in the use of all the editions in the same ...
Page 17
... discovered the " Saros " or " Chaldean Period , " which is the length of time in which the eclipses of the sun and moon repeat themselves in the same order . THE GRECIANS . - In the seventh century B. C. , Thales , noted for his ...
... discovered the " Saros " or " Chaldean Period , " which is the length of time in which the eclipses of the sun and moon repeat themselves in the same order . THE GRECIANS . - In the seventh century B. C. , Thales , noted for his ...
Page 19
... discovered the precession of the equi- noxes , and made the first catalogue of the stars- 1081 in number . Two THE EGYPTIANS . - Egypt , as well as Chaldea , was noted for its knowledge of the sciences long before they were cultivated ...
... discovered the precession of the equi- noxes , and made the first catalogue of the stars- 1081 in number . Two THE EGYPTIANS . - Egypt , as well as Chaldea , was noted for its knowledge of the sciences long before they were cultivated ...
Page 27
... discovered at last , and Kepler an- nounced his first great law- PLANETS REVOLVE IN ELLIPSES , WITH THE SUN AT ONE FOCUS . Second Law . - Kepler knew that the planets do not move with equal velocity in the different parts of their ...
... discovered at last , and Kepler an- nounced his first great law- PLANETS REVOLVE IN ELLIPSES , WITH THE SUN AT ONE FOCUS . Second Law . - Kepler knew that the planets do not move with equal velocity in the different parts of their ...
Page 28
... discovered that while in going from B to A the planet moves very slowly , and from D to C Fig . 3 . D very rapidly ; yet the space inclosed between the lines SB and SA is equal to that inclosed between SD and SC . Hence the second law ...
... discovered that while in going from B to A the planet moves very slowly , and from D to C Fig . 3 . D very rapidly ; yet the space inclosed between the lines SB and SA is equal to that inclosed between SD and SC . Hence the second law ...
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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