The Interpretation of Radium and the Structure of the Atom
A Nobel Prize–winning chemist explains the nature of radioactivity and the structure of the atom in nontechnical language in this classic scientific text, appropriate for upper-level undergraduates and graduate students. Beginning with the discovery of radioactivity, the text covers radium, the rays of radioactive substances, and radium’s emanation. Additional topics include helium and radium, the theory of atomic disintegration, the origin of radium and its successive changes, radioactivity and the nature of matter, radioactivity and the evolution of the world, the thorium and actinium disintegration series, and the ultimate structure of matter. Concluding chapters examine the nuclear atom, isotopes, and x-rays. 1920 ed. 44 figures.
THE RAYS OF RADIOACTIVE SUBSTANCES continued
RADIOACTIVITY AND THE EVOLUTION OF THE WORLD
Elements which are chemically identicalThe periodic law
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a-particle a-rays actinium active deposit actually amount appears argon atom of matter atomic disintegration atomic weight B-rays bismuth body chemist completely compounds containing decay definite detect discovery disintegration series edition effect electrons emana emanation of radium Ernest Rutherford evidence existence expelled experiments fact gases gives a-rays heat helium hydrogen intermediate ionium isotopes known less light Loch Katrine magnet MAGNETIC DEVIATION mass material mesothorium metal methods milligram million Milngavie minutes molecule nucleus ordinary parent of radium particles penetrating period of average periodic table phosphorescent photographic physical science pitchblende plate polonium positive charge possible practically present properties proportion pure radium quantity of radium radiation radio radio-elements radioactive change radioactive elements radioactive substances radiothorium radium bromide radium emanation rays Rutherford screen separated spectrum SPINTHARISCOPE store of energy thallium theory thorium thousand tion transmutation tube Unabridged republication uranium minerals velocity wave-length willemite X-rays y-rays