The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Termeni și expresii frecvente
actinium active deposit Alpha rays Ångström atomic weight barium bismuth Boltwood cathode rays centimetre charge carried chemical considered constant contained corpuscles crystals cubic centimetre Curie and Danne decay curves deflected density detected discovery earth effect electric field electrometer electroscope emana experiments exposed fact fall to half fluorescence gases give rise gramme of radium half its activity heat helium hydrogen hypothesis induced activity investigation ionization J. J. Thomson known LENOX AND TILDEN Madame Curie magnetic field measured ment method minerals negatively charged obtained ordinary metals phenomena Phil pitchblende polonium potential pressure produced quantity of emanation quantity of radium radiation emitted radio radioactive bodies radioactive elements radioactive substances radium bromide radium chloride radium emanation radium salt rate of decay removed Röntgen rays Rutherford and Soddy seen separated shown solution temperature thorium emanation tion transformed tube uranium velocity wire
Pasaje populare
Pagina 33 - ... a charge equal to that carried by the hydrogen ion in electrolysis.
Pagina 15 - The current is proportional to the sum of the velocities of the individual electrons.
Pagina 39 - If this current is passed through a copper voltameter, the quantity of copper deposited in a given time is a measure of the quantity of electricity which has passed through the circuit.
Pagina 80 - Rutherford discusses the question and inclines to the latter view ; but if the a particle carries this double charge, it is a remarkable fact and would be quite unique, for it will be remembered that in the case of the ions in a gas produced by various ionizing agents, the charge was always found to be that carried by the hydrogen ion in electrolysis.
Pagina iv - The rights of translation and of reproduction are reserved CONTENTS CHAPTER PAGE I.
Pagina 23 - ... a magnetic field acting at right angles to the direction of motion of the particles and the magnitude of the deflection to be expected for a given magnetic field can easily be calculated.
Pagina 174 - ... a negatively charged conductor, for example a wire, to the emanation in order to concentrate the maximum possible quantity of deposit on its surface.
Pagina 80 - ... the charge carried by the hydrogen ion in electrolysis, the mass of the a particle is half th"e atomic weight of helium.
Pagina 23 - Since the force always acts at right angles to the path of the particle, it does not affect its velocity but only the direction of its motion.