Popular Astronomy, Volume 50Goodsell Observatory of Carleton College, 1942 |
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Page 123
... method makes use of the Cepheid or pulsating variable stars . They show a marked correlation between their periods and their intrinsic brightness ; the longer the period , the brighter the star . Remembering that light varies inversely ...
... method makes use of the Cepheid or pulsating variable stars . They show a marked correlation between their periods and their intrinsic brightness ; the longer the period , the brighter the star . Remembering that light varies inversely ...
Page 145
... method of investigating the high levels of the earth's atmosphere . The spectrographic method requires long exposures and consequently the resolving power on the time scale for the observations is poor . The photoelectric photometer has ...
... method of investigating the high levels of the earth's atmosphere . The spectrographic method requires long exposures and consequently the resolving power on the time scale for the observations is poor . The photoelectric photometer has ...
Page 429
... method of changing a date , Gregorian calendar to the equivalent date , World calendar . Three such methods seem desirable . The third method is for the populace ; the other methods presuppose more education . Suppose a person was born ...
... method of changing a date , Gregorian calendar to the equivalent date , World calendar . Three such methods seem desirable . The third method is for the populace ; the other methods presuppose more education . Suppose a person was born ...
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