The Observatory, Volume 56Editors of the Observatory, 1933 Some vols. for 1886- include a special issue: Annual companion to the Observatory. |
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Page 155
... line , they show a statistical effect dependent on the physical nature of the system producing the line- neutral atom , ionised atom , or molecule . The molecular lines are shorter and fatter than ordinary iron lines , and show a high ...
... line , they show a statistical effect dependent on the physical nature of the system producing the line- neutral atom , ionised atom , or molecule . The molecular lines are shorter and fatter than ordinary iron lines , and show a high ...
Page 334
... line 5303 A was present and strong ; another strong line . at 6374 A , shifted from the position of the ionised silicon line previously observed , was almost certainly the red coronal line . These lines had appeared within the preceding ...
... line 5303 A was present and strong ; another strong line . at 6374 A , shifted from the position of the ionised silicon line previously observed , was almost certainly the red coronal line . These lines had appeared within the preceding ...
Page 363
nebular lines , N1 , N2 , and lines due to neutral helium were prominent , as well as the Balmer series of hydrogen and the line 4363. Two lines , of unknown origin , at AA 5723 , 6088 , first made their appearance in that year . In ...
nebular lines , N1 , N2 , and lines due to neutral helium were prominent , as well as the Balmer series of hydrogen and the line 4363. Two lines , of unknown origin , at AA 5723 , 6088 , first made their appearance in that year . In ...
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absorption appears astrographic Astronomer Royal atmosphere atom bands bright BRITISH ASTRONOMICAL ASSOCIATION calcium Cambridge Cape catalogue central intensities centre chromosphere clock colour comet comparison stars computed correction corresponding craters Crommelin curve Decl density determined discussion distance double stars Earth eclipse effect electrons emission ephemeris equation equatorial Eros frequency galaxies George Darwin give given Greaves Greenwich hydrogen instrument interest investigation ionisation Jupiter km./sec latitude layer light lines longitude magnetic magnitude mean measured meridian meteorite meteors method motion nebulæ observations Observatory obtained orbit oscillator paper period photographs planet planetary plates position possible present President probable error Prof Professor Quadrantids radial velocities radiation Right Ascension rotational speed Sir Arthur Eddington Sir Frank Dyson slide Solar Activity spectra spectrograph spectrum spot Steavenson stellar Sun's sunspot surface tables telescope temperature theory University variable variable stars variation wave-length zero