Popular Astronomy, Volume 50Goodsell Observatory of Carleton College, 1942 |
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Page 75
... observations over a period sufficiently long to eliminate to a considerable extent the effects of the irregular changes . Eclipse observations over a period of 2000 years indicate that the slowing down causes the length of the year , as ...
... observations over a period sufficiently long to eliminate to a considerable extent the effects of the irregular changes . Eclipse observations over a period of 2000 years indicate that the slowing down causes the length of the year , as ...
Page 411
... Observations of the Variation and Dip of the Magnetic Needle . By Samuel Williams , F.A.A. , Hollis Professor of Mathematics and Natural Philosophy in the University . ( All these references preserve the capitalization , punctuation ...
... Observations of the Variation and Dip of the Magnetic Needle . By Samuel Williams , F.A.A. , Hollis Professor of Mathematics and Natural Philosophy in the University . ( All these references preserve the capitalization , punctuation ...
Page 412
... Observations of a lunar eclipse , November 11 , 1780 , at Cambridge . ( 11 ) Observations of a lunar eclipse , March 29 , 1782 , at Cambridge . ( 12 ) Observations of a solar eclipse , April 12 , 1782 , at Cambridge . ( 13 ) Observations ...
... Observations of a lunar eclipse , November 11 , 1780 , at Cambridge . ( 11 ) Observations of a lunar eclipse , March 29 , 1782 , at Cambridge . ( 12 ) Observations of a solar eclipse , April 12 , 1782 , at Cambridge . ( 13 ) Observations ...
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