The Theory of Spectra and Atomic Constitution

CONTENTSESSAY ION THE SPECTRUM OF HYDROGENEmpirical spectral lawsLaws of temperature radiationThe nuclear theory of the atomQuantum theory of spectraHydrogen spectrumThe Pickering linesOther spectraESSAY IION THE SERIES SPECTRA OF THE ELEMENTSI. Introduction II. General Principles of the Quantum Theory of SpectraHydrogen spectrumThe correspondence principleGeneral spectral lawsAbsorption and excitation of radiationIII. Development of the Quantum Theory of Spectra Effect of external forces on the hydrogen spectrumThe Stark effectThe Zeeman effectCentral perturbationsRelativity effect on hydrogen linesTheory of series spectraCorrespondence principle and conservation of angular momentumThe spectra of helium and lithiumComplex structure of series linesIV. ConclusionESSAY IIITHE STRUCTURE OF THE ATOM AND THE PHYSICAL AND CHEMICAL PROPERTIES OF THE ELEMENTSI. Preliminary The nuclear atomThe postulates of the quantum theoryHydrogen atomHydrogen spectrum and X-ray spectraThe fine structure of the hydrogen linesPeriodic tableRecent atomic modelsII. Series Spectra and the Capture of Electrons by AtomsArc and spark spectraSeries diagramCorrespondence principleIII. Formation of Atoms and the Periodic TableFirst Period. Hydrogen-HeliumSecond Period. Lithium-NeonThird Period. Sodium-ArgonFourth Period. Potassium-KryptonFifth Period. Rubidium-XenonSixth Period. Caesium-NitonSeventh PeriodSurvey of the periodic tableIV. Reorganization of Atoms and X-Ray SpectraAbsorption and emission of X-rays and correspondence principle]X-ray spectra and atomic structureClassification of X-ray spectraConclusion