Radio-Active Substances
by Marie Curie
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About This Book
"The object of the present work is the publication of researches which I have been carrying on for more than four years on radio-active bodies. I began these researches by a study of the phosphorescence of uranium, discovered by M. Becquerel. The results to which I was led by this work promised to afford so interesting a field that Pierre Curie put aside the work on which he was engaged, and joined me, our object being the extraction of new radio-active substances and the further study of their properties."
Chapters (141)
- RADIO-ACTIVE SUBSTANCES
- INTRODUCTION.
- Historical.
- CHAPTER I. Radio-activity of Uranium and Thorium. Radio-active Minerals.
- Measurement of the Intensity of Radiation.
- Radio-activity of the Compounds of Uranium and Thorium.
- Is Atomic Radio-activity a general Phenomenon?
- Radio-active Minerals.
- CHAPTER II. Method of Research.
- Polonium, Radium, Actinium.
- Spectrum of Radium.
- Extraction of the New Radio-active Substances.
- Polonium.
- Preparation of the Pure Chloride of Radium.
- Determination of the Atomic Weight of Radium.
- Characteristics of the Radium Salts.
- Fractionation of Ordinary Barium Chloride.
- CHAPTER III. Radiation of the New Radio-active Substances.
- Methods of Investigation of the Radiation.
- Energy of Radiation.
- Complex Nature of the Radiation.
- Action of the Magnetic Field.
- Deflected β-Rays.
- Charge of the Deflected Rays.
- Action of the Electric Field upon the Deflected β-Rays of Radium.
- Relation of the Charge to the Mass for a Particle Negatively Charged Emitted by Radium.
- Action of the Magnetic Field upon the α-Rays.
- Action of the Magnetic Field on the Rays of other Radio-active Substances.
- Proportion of β-Rays in the Radiation of Radium.
- Penetrating Power of the Radiation of Radio-active Bodies.
- Ionising Action of Radium Rays on Insulating Liquids.
- Various Effects and Applications of the Ionising Action of the Rays Emitted by Radio-active Substances.
- Fluorescent and Luminous Effects.
- Evolution of Heat by the Salts of Radium.
- Chemical Effects produced by the New Radio-active Bodies.
- Physiological Effects.
- Influence of Temperature upon Radiation.
- CHAPTER IV. Communication of Radio-activity to Substances Initially Inactive.
- Activity Induced in an Enclosed Space.
- Part played by Gases in the Phenomena of Induced Radio-activity.
- Dissipation in Free Air of the Induced Activity of Solid Bodies.
- Dissipation of Activity in a Confined Space. Velocity of Destruction of the Emanation.
- Variation of Activity of Liquids rendered Active and of Radium Solutions.
- Theory of Radio-activity.
- Another Form of Induced Radio-activity.
- Induced Radio-activity with Slow Dissipation.
- Radio-activity Induced upon Substances in Solution with Radium.
- Dissemination of Radio-active Particles and Induced Radio-activity of the Laboratory.
- Activity Induced Outside the Influence of Radio-active Substances.
- Variations of Activity of Radio-active Bodies. Effects of Solution.
- Variations of the Activity of Radium Salts on Heating.
- Theory of Interpretation of the Causes of Variations of Activity of Radium Salts after Solution and after Heating.
- Nature and Cause of the Phenomena of Radio-activity.
- Conclusions.
- TRANSCRIBER’S NOTES
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