Philosophical MagazineTaylor & Francis, 1913 - Physics |
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Page 341
... activity ascribed by Rutherford and Soddy to thorium alone is due to thorium plus an uncertain fraction of the equilibrium amount of Rt ; while that of the excited activity is due essentially to C. Rutherford and Soddy † found that the ...
... activity ascribed by Rutherford and Soddy to thorium alone is due to thorium plus an uncertain fraction of the equilibrium amount of Rt ; while that of the excited activity is due essentially to C. Rutherford and Soddy † found that the ...
Page 344
... activity of the preparation but usually about 0.1 mg . , was then made into a thin film on a flat metal plate . The time of the last precipitation of HS was taken as time zero , that is , the time when only ThX was present . Barium ...
... activity of the preparation but usually about 0.1 mg . , was then made into a thin film on a flat metal plate . The time of the last precipitation of HS was taken as time zero , that is , the time when only ThX was present . Barium ...
Page 357
... Activity . Activity . P.c. of total alpha - ray Activity . Th 2.58 0.79 0.79 11.4 Rt 3.67 1.00 1.00 1:00 144 ThX 4.1 1:08 15.5 Em 5 : 0 1.23 3.60 3.665 17.6 Ꭺ 5.4 1.29 18.6 C1 8.6 1.76 C2 4.8 1.20 } 1.56 1.540 22.5 B + D 025 Now we ...
... Activity . Activity . P.c. of total alpha - ray Activity . Th 2.58 0.79 0.79 11.4 Rt 3.67 1.00 1.00 1:00 144 ThX 4.1 1:08 15.5 Em 5 : 0 1.23 3.60 3.665 17.6 Ꭺ 5.4 1.29 18.6 C1 8.6 1.76 C2 4.8 1.20 } 1.56 1.540 22.5 B + D 025 Now we ...
Contents
SIXTH SERIES | 1 |
Dr N Bohr on the Theory of the Decrease of Velocity | 10 |
Dr S A Shorter on the Application of the Theory | 31 |
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absorbed absorption acid activity alpha rays aluminium ampere angle apparatus approximately atomic weight beam brass cadmium iodide calculated carbon cathode rays cent centimetre charge circuit coefficient collisions constant contact potential corpuscles corpuscular radiation curve deflexion deposit determined diffusion discharge electric electrometer electrons electroscope emanation emission emitted energy equation equilibrium experimental experiments film foil formula frequency galvanometer gases given gives glass heating effect hydrogen increase ionization ionization-chamber ions iridium J. J. Thomson layers magnetic maximum measured mercury metal method mgrms molecules negative nitrogen nuclei observed obtained oxide oxygen paper particles Phil phosphorus Phys Planck unit plate platinum positive pressure Proc produced proportional quantity radium ratio scattering shown solution spectrum sublimate substance surface Table temperature theory thickness thorium tube uranium V₁ vapour velocity vibrations volts wave-length waves wire X-rays zero