Popular Astronomy, Volume 50Goodsell Observatory of Carleton College, 1942 |
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Page 74
... mean solar time was devised . Since this time is measured with reference to the mean fictitious sun it can not be determined directly by the observation of any celestial object ; it must rather be determined by the use of formulas which ...
... mean solar time was devised . Since this time is measured with reference to the mean fictitious sun it can not be determined directly by the observation of any celestial object ; it must rather be determined by the use of formulas which ...
Page 101
... Means 1242 336 0.80 0.78 312 6.8 7.9 5.2 Cb Column 7 gives the mean period , with the average deviation of the individual dates of maximum and minimum from the mean value given in columns 8 and 9. Column 10 gives the mean range of ...
... Means 1242 336 0.80 0.78 312 6.8 7.9 5.2 Cb Column 7 gives the mean period , with the average deviation of the individual dates of maximum and minimum from the mean value given in columns 8 and 9. Column 10 gives the mean range of ...
Page 493
... mean of the years 1913- 1922 , the mean sunspot number for the northern summer half - year ( April - September ) was 46 as against 42 for the winter half - year . But this was only an effect of curvature in the variation over the whole ...
... mean of the years 1913- 1922 , the mean sunspot number for the northern summer half - year ( April - September ) was 46 as against 42 for the winter half - year . But this was only an effect of curvature in the variation over the whole ...
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