Radium: its physics & therapeutics. / by Dawson Turner.

  • Turner, Dawson, 1857-1928.
Date:
1914
Catalogue details

Licence: In copyright

Credit: Radium: its physics & therapeutics. / by Dawson Turner. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    beta, and gamma rays, and changes into radium D. And so on through similar disintegrations until a body called radium G is reached. This body is believed to be lead; and that is as far as the disin- Uranium I. Uranium XI. Uranium X2. Uranium II. Ionium. Radium. 7,500,000,000 35-5 days. 1-7 minutes. 3,000,000 200,000 2,500 years, years. years ? years ? pc p° /P^^ Emanation. Radium A. Badium B. Radium C. Radium C*. Active deposit of rapid change. 5'3 days. 4'3 minutes. 38 minutes. 30'5 minutes. iccnBOij second ? Badium D. Badium E. Badium P. Badium G. (Polonium.) (Lead?) Active deposit of slow change. 24 years. 7-25 days. 203 days. Pig. 7.—Disintegration Series (Professor Soddy). tegration series of uranium is at present known. Eadium P is the polonium discovered by Mme. Curie before the discovery of radium. Some of these changes take only a few minutes, and some take many years. One more word about the active deposit of the emana-