Fourteen Weeks in Descriptive Astronomy |
From inside the book
Results 6-10 of 51
Page 56
... sidereal revolution . The spots apparently do not always move in straight lines . Sometimes their path curves toward MARCH . JUNE . SEPTEMBER . Fig . 9 . the north , and sometimes toward the south , as in the figure . This can be ...
... sidereal revolution . The spots apparently do not always move in straight lines . Sometimes their path curves toward MARCH . JUNE . SEPTEMBER . Fig . 9 . the north , and sometimes toward the south , as in the figure . This can be ...
Page 80
... SIDEREAL AND SYNODIC REVOLUTION . - The interval of time required by a planet to perform a revolution from one fixed star back to it again , is termed a sidereal revolution ( sidus , a star ) . 1. The interval of time between two ...
... SIDEREAL AND SYNODIC REVOLUTION . - The interval of time required by a planet to perform a revolution from one fixed star back to it again , is termed a sidereal revolution ( sidus , a star ) . 1. The interval of time between two ...
Page 81
... sidereal and a synodic revolution , and the planet would come into conjunction twice in each revolution . Since , however , the earth is in motion , it follows that after the planet has completed its sidereal revolution , it must then ...
... sidereal and a synodic revolution , and the planet would come into conjunction twice in each revolution . Since , however , the earth is in motion , it follows that after the planet has completed its sidereal revolution , it must then ...
Page 85
... sidereal revolu- tion around the sun in 88 days , yet to pass from one inferior or superior conjunction to the same again ( a synodic revolution ) requires 116 days . The reason of this is , as already explained , that when Mercury ...
... sidereal revolu- tion around the sun in 88 days , yet to pass from one inferior or superior conjunction to the same again ( a synodic revolution ) requires 116 days . The reason of this is , as already explained , that when Mercury ...
Page 91
... sidereal revolu- tion , as it would appear to an observer at the sun , but a synodic revolution is 584 days . Mercury , we remember , catches up with the earth in 28 days after it reaches the point where it left the earth at the last ...
... sidereal revolu- tion , as it would appear to an observer at the sun , but a synodic revolution is 584 days . Mercury , we remember , catches up with the earth in 28 days after it reaches the point where it left the earth at the last ...
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