The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina 15
... quantity is found to be proportional to the potential difference between the plates . The sum of the velocities u , and v . with which the positive and negative ions respectively move under a potential gradient of one volt per ...
... quantity is found to be proportional to the potential difference between the plates . The sum of the velocities u , and v . with which the positive and negative ions respectively move under a potential gradient of one volt per ...
Pagina 17
... quantities are equal it follows that V = p which gives the relation required . Although several methods have been used to measure the sum of the velocities of the ions and their velocities separately , sufficient has been said to ...
... quantities are equal it follows that V = p which gives the relation required . Although several methods have been used to measure the sum of the velocities of the ions and their velocities separately , sufficient has been said to ...
Pagina 20
... cubic centi- metre cannot be directly counted , this quantity can be estimated by measuring the time taken for the cloud to fall . Since the individual drops of water in a cloud are exceedingly small , 20 THE RADIOACTIVE SUBSTANCES.
... cubic centi- metre cannot be directly counted , this quantity can be estimated by measuring the time taken for the cloud to fall . Since the individual drops of water in a cloud are exceedingly small , 20 THE RADIOACTIVE SUBSTANCES.
Pagina 21
... quantity of water contained in the cloud , it is a matter merely of calculation to deter- mine the number of drops constituting the cloud . Now it has long since been shown by Stokes that if a small sphere of density Po fall through a ...
... quantity of water contained in the cloud , it is a matter merely of calculation to deter- mine the number of drops constituting the cloud . Now it has long since been shown by Stokes that if a small sphere of density Po fall through a ...
Pagina 26
... quantities , and this is done by measuring the deflection of the rays an electric field . Consider the rays passing between two charged parallel plates and let F be the electric force between the plates , then Fe is the mechanical force ...
... quantities , and this is done by measuring the deflection of the rays an electric field . Consider the rays passing between two charged parallel plates and let F be the electric force between the plates , then Fe is the mechanical force ...
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Termeni și expresii frecvente
absorption actinium active deposit ALPHA RAYS aluminium atomic weight barium Becquerel bismuth Boltwood cathode rays centimetres charge carried charged particles chemical considered contained corpuscles crystals Curie and Danne deflected density detected discovery effect electric field electrolysis electrometer electroscope emana experiments exposed fact fluorescence formed Fourth Edition gases gramme of radium heat helium hydrogen Illustrations insulated ionization J. J. Thomson known light LL.D Madame Curie magnetic field matter measured metals method minerals nature negative ions negatively charged obtained passing phenomena Phil pitchblende polonium present pressure produced properties 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 Rutherford and Soddy seen separated shown solution temperature thorium thorium emanation tion transformed tube uranium velocity vessel weight of radium wire