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 296
... energy is called the normal state . It often happens that to an energy level E ; there belongs a number g of permissible states . In such cases the level j is said to be degenerate and g ; is called the weight of the level . By emission ...
... energy is called the normal state . It often happens that to an energy level E ; there belongs a number g of permissible states . In such cases the level j is said to be degenerate and g ; is called the weight of the level . By emission ...
Page 301
... energy of the atom core is , in comparison to the total ionisation energy of all the valence electrons , the closer does this approximation hold . For We note that fik is negative if E ; < E ; consequently , if i denotes the normal ...
... energy of the atom core is , in comparison to the total ionisation energy of all the valence electrons , the closer does this approximation hold . For We note that fik is negative if E ; < E ; consequently , if i denotes the normal ...
Page 306
... energy value of the atom is just at the centre of k ; finally , it falls from there to the level l emitting the line in question . These two lines are of comparable intensity , because in each case one of the energy values involved in ...
... energy value of the atom is just at the centre of k ; finally , it falls from there to the level l emitting the line in question . These two lines are of comparable intensity , because in each case one of the energy values involved 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