Fourteen Weeks in Descriptive Astronomy |
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Page 9
... half its present size . P. 82. ) During the total eclipse of July 29 , 1878 , Prof. Watson of the Ann Arbor Observatory , and Dr. Lewis Swift , of Rochester , each saw two Intra - Mercurial planets . ( P. 90. ) The greatest brilliancy ...
... half its present size . P. 82. ) During the total eclipse of July 29 , 1878 , Prof. Watson of the Ann Arbor Observatory , and Dr. Lewis Swift , of Rochester , each saw two Intra - Mercurial planets . ( P. 90. ) The greatest brilliancy ...
Page 36
... half of the sphere is constantly visible to us ; and so far distant are the stars , that we see just as much of the sphere as we would if the upper part of the earth were removed , and we were to stand four thousand miles further away ...
... half of the sphere is constantly visible to us ; and so far distant are the stars , that we see just as much of the sphere as we would if the upper part of the earth were removed , and we were to stand four thousand miles further away ...
Page 48
... half de- gree in diameter , so that 360 disks like the sun , laid side by side , would make a half circle of the celestial sphere . It seems a little larger to us in winter than in summer , as we are 3,000,000 miles nearer it . If we ...
... half de- gree in diameter , so that 360 disks like the sun , laid side by side , would make a half circle of the celestial sphere . It seems a little larger to us in winter than in summer , as we are 3,000,000 miles nearer it . If we ...
Page 57
... half - way to either pole requires twenty - eight days . One spot was noticed which had a motion three times greater than that of clouds driven along by the most violent hurricane . Again , immense cyclones occasionally pass over the ...
... half - way to either pole requires twenty - eight days . One spot was noticed which had a motion three times greater than that of clouds driven along by the most violent hurricane . Again , immense cyclones occasionally pass over the ...
Page 58
... half an hour . In one case , Sir . W. Herschel relates that when examining a spot through his telescope , he turned away for a moment , and on looking back it was gone . The appearance of the spots is periodical . - It is a re- markable ...
... half an hour . In one case , Sir . W. Herschel relates that when examining a spot through his telescope , he turned away for a moment , and on looking back it was gone . The appearance of the spots is periodical . - It is a re- markable ...
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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