Fourteen Weeks in Descriptive Astronomy |
From inside the book
Results 1-5 of 26
Page 8
... portion of the class write their topics in full upon the blackboard , it will be found a valuable exercise in spelling , punctuation , and composition . Every point which can be illustrated in the heavens should be shown to the class ...
... portion of the class write their topics in full upon the blackboard , it will be found a valuable exercise in spelling , punctuation , and composition . Every point which can be illustrated in the heavens should be shown to the class ...
Page 25
... by Brahé , with the places as stated by the best tables that could be computed on the circular theory . For a time they agreed , but in certain portions of the orbit the observations of Brahé would not fit the computed 2 HISTORY . 25.
... by Brahé , with the places as stated by the best tables that could be computed on the circular theory . For a time they agreed , but in certain portions of the orbit the observations of Brahé would not fit the computed 2 HISTORY . 25.
Page 53
... portions called the umbra , and around that a grayish portion styled the pe- numbra ( pene , almost , and um- bra , black ) .— Sometimes , how- ever , umbræ ap- pear without a penumbra , and vice versa . The umbra itself has generally a ...
... portions called the umbra , and around that a grayish portion styled the pe- numbra ( pene , almost , and um- bra , black ) .— Sometimes , how- ever , umbræ ap- pear without a penumbra , and vice versa . The umbra itself has generally a ...
Page 59
... portion of the sun's disk . The faculæ , on the other hand , do not increase the temperature . ( Secchi . ) The spots are depressions below the luminous surface . —This was thought probable before , but is conclu- sively proved by the ...
... portion of the sun's disk . The faculæ , on the other hand , do not increase the temperature . ( Secchi . ) The spots are depressions below the luminous surface . —This was thought probable before , but is conclu- sively proved by the ...
Page 79
... portion of her orbit , as we shall easily see by imagining various positions of the earth and planet , and then drawing lines as we have just done , noticing whether they indicate direct or retrograde motion . The greater the distance ...
... portion of her orbit , as we shall easily see by imagining various positions of the earth and planet , and then drawing lines as we have just done , noticing whether they indicate direct or retrograde motion . The greater the distance ...
Other editions - View all
Common terms and phrases
ancients Andromeda angle aphelion appearance Aries astronomers atmosphere axis body Boötes bright brilliant Canis Minor Capricornus Cassiopeia celestial centre Cepheus circle color comet conjunction constellation Cor Caroli dark density Describe diameter disk Draco earth east ecliptic equal equator equinoctial figure fixed stars full moon globe heat heavens Hercules Herschel horizon inclined inferior inferior conjunction inferior planet Jupiter latitude length light lunar Lyra magnitude Mars mean distance Mercury meridian meteors miles moon moon's motion move naked eye nearly nebula Neptune node north pole orbit Orion parallax pass path penumbra perihelion Perseus Pisces planet Polaris precession rays revolve ring rising Saturn seasons seen shadow shines shower sidereal sidereal day solar day solar system space spots summer sun's superior planet surface synodic revolution tance Taurus telescope theory tion Uranus Ursa Major Ursa Minor varies velocity Venus vernal equinox visible zodiac