Fourteen Weeks in Descriptive Astronomy |
From inside the book
Results 6-10 of 32
Page 95
... rays of light into regions where the sun has already set , has hence been inferred . Thus , on Venus , the evenings , like ours , are lighted by twilight , and the mornings by dawn . ( 2. ) The edge of the enlightened portion of the ...
... rays of light into regions where the sun has already set , has hence been inferred . Thus , on Venus , the evenings , like ours , are lighted by twilight , and the mornings by dawn . ( 2. ) The edge of the enlightened portion of the ...
Page 108
... rays . In three months the earth has passed over one - fourth of her orbit , and has arrived at B. Stars about F now appear on the meridian at midnight . while those at E , which previously occupied their places , have descended toward ...
... rays . In three months the earth has passed over one - fourth of her orbit , and has arrived at B. Stars about F now appear on the meridian at midnight . while those at E , which previously occupied their places , have descended toward ...
Page 112
... rays of the sun strike the various por- tions of the earth , when in any position , at different angles . - Example . When the earth is in Libra , and also when in Aries , the rays strike vertically at the equator , and more and more ...
... rays of the sun strike the various por- tions of the earth , when in any position , at different angles . - Example . When the earth is in Libra , and also when in Aries , the rays strike vertically at the equator , and more and more ...
Page 113
... rays strike less obliquely in the southern hemisphere than before , but in the northern hemisphere more obliquely . These six months have changed the direction of the sun's rays on every part of the earth's surface . This accounts for ...
... rays strike less obliquely in the southern hemisphere than before , but in the northern hemisphere more obliquely . These six months have changed the direction of the sun's rays on every part of the earth's surface . This accounts for ...
Page 114
... rays could leave a gold- en line on the surface of the earth as it revolves , they would mark the Tropic of Cancer . The sun is at its furthest northern declination , ascends the high- est it is ever seen above our horizon , and rises ...
... rays could leave a gold- en line on the surface of the earth as it revolves , they would mark the Tropic of Cancer . The sun is at its furthest northern declination , ascends the high- est it is ever seen above our horizon , and rises ...
Other editions - View all
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