Popular Astronomy, Volume 50Goodsell Observatory of Carleton College, 1942 |
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Page 145
... variation , and the nature of the irregular variations . On the assumption that the light of the night sky is uniformly dis- tributed over large geographical areas it is possible to compute theoreti- cal curves of the variations in ...
... variation , and the nature of the irregular variations . On the assumption that the light of the night sky is uniformly dis- tributed over large geographical areas it is possible to compute theoreti- cal curves of the variations in ...
Page 484
... variation in the light of comets is a rule rather than an exception . Table 3 contains the results obtained for the periodic variation in the brightness of comets . The column denoted P gives the period in days ; column a gives the semi ...
... variation in the light of comets is a rule rather than an exception . Table 3 contains the results obtained for the periodic variation in the brightness of comets . The column denoted P gives the period in days ; column a gives the semi ...
Page 494
... variation . The tabulation does not appear to substantiate very strongly the equinoctial maxima . There is , however , a well - defined semi - annual variation in the occurrence of polar lights to which C. F. Brooks and I have called ...
... variation . The tabulation does not appear to substantiate very strongly the equinoctial maxima . There is , however , a well - defined semi - annual variation in the occurrence of polar lights to which C. F. Brooks and I have called ...
Contents
Bolide observed A bright 451 | 114 |
STELLAR DISTANCES FREDERICK SLOCUM | 117 |
METEORITIC FOSSILS BEN HUR WILSON | 125 |
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absolute magnitude American American Astronomical Society American Meteor Society angle appeared Astronomical Society atmosphere average azimuth changes College comets constellation craters Cygni diameter direction distance earth eclipse end point ephemeris errors fireball galactic galaxies given height horizon indicated instruments July June Jupiter latitude Lick Observatory light curve longitude luminosity lunar Mare Imbrium Mars maxima maximum mean measured meridian meteor meteorite method miles minimum moon motion nebulae Notes novae object observations Observatory obtained OCCULTATIONS Ohio orbit paper parallax path perihelion phenomena photographs planet POPULAR ASTRONOMY position predicted present probably problem projectile radiation region reports rotation seen solar spectra spectral type spectrum SS Cygni stellar sunspot surface Table telescope tion train University Variable Star variation velocity Venus visible Yerkes Observatory zenith Zodiacal Light