Fourteen Weeks in Descriptive Astronomy |
From inside the book
Results 1-5 of 39
Page 8
... equal the reality in the sky . After a constellation has been traced , the pupil should be practised in star - map drawing . Much profit- able instruction can be obtained in this way . For the pur- pose of more easily finding the ...
... equal the reality in the sky . After a constellation has been traced , the pupil should be practised in star - map drawing . Much profit- able instruction can be obtained in this way . For the pur- pose of more easily finding the ...
Page 9
... equal in amount to the mass of Mercury . ( See article by Prof. Young in Popular Science Monthly , Nov. 1880. ) Newcomb says that in 5,000,000 years , at the present rate , the sun will have shrunk to half its present size . P. 82 ...
... equal in amount to the mass of Mercury . ( See article by Prof. Young in Popular Science Monthly , Nov. 1880. ) Newcomb says that in 5,000,000 years , at the present rate , the sun will have shrunk to half its present size . P. 82 ...
Page 27
... equal velocity in the different parts of their orbits . He next set about establish- ing some law by which this speed could be deter- mined , and the place of the planet computed . He drew an ellipse , and marked the various positions ...
... equal velocity in the different parts of their orbits . He next set about establish- ing some law by which this speed could be deter- mined , and the place of the planet computed . He drew an ellipse , and marked the various positions ...
Page 28
... equal to that inclosed between SD and SC . Hence the second law- A LINE CONNECTING THE CENTRE OF THE EARTH WITH THE CENTRE OF THE SUN , PASSES OVER EQUAL SPACES IN EQUAL TIMES . Third Law . - Kepler , not satisfied with the dis- covery ...
... equal to that inclosed between SD and SC . Hence the second law- A LINE CONNECTING THE CENTRE OF THE EARTH WITH THE CENTRE OF THE SUN , PASSES OVER EQUAL SPACES IN EQUAL TIMES . Third Law . - Kepler , not satisfied with the dis- covery ...
Page 38
... equal to twenty - four hours of motion - thus making 15 ° equal to one hour of motion . Through these divisions run twenty - four meridians , each constituting an hour of motion ( time ) or 15 ° of space . The Hour Circles may be ...
... equal to twenty - four hours of motion - thus making 15 ° equal to one hour of motion . Through these divisions run twenty - four meridians , each constituting an hour of motion ( time ) or 15 ° of space . The Hour Circles may be ...
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