The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina 23
... vessel which can be evacuated by means of a pump , the character of the discharge gradually changes as the pressure of the gas is reduced . When the vacuum is sufficiently high , a faint stream of light is seen proceed- ing in straight ...
... vessel which can be evacuated by means of a pump , the character of the discharge gradually changes as the pressure of the gas is reduced . When the vacuum is sufficiently high , a faint stream of light is seen proceed- ing in straight ...
Pagina 29
... vessel in which they are being generated they produce phosphor- escence , but under ordinary circumstances the rays do not reach the space outside the dis- charge tube , since they are stopped by the glass of which the tube is made ...
... vessel in which they are being generated they produce phosphor- escence , but under ordinary circumstances the rays do not reach the space outside the dis- charge tube , since they are stopped by the glass of which the tube is made ...
Pagina 35
... platinum . foil attached to it dips into a glass vessel containing sulphuric acid , which is thus in connection with the needle and increases the electric capacity of the system . At the same time. METHODS OF MEASURING CURRENTS 37.
... platinum . foil attached to it dips into a glass vessel containing sulphuric acid , which is thus in connection with the needle and increases the electric capacity of the system . At the same time. METHODS OF MEASURING CURRENTS 37.
Pagina 42
... vessel coaxial with the rod C. This vessel is connected to one pole of a battery of secondary cells , the other R C TO ELECTROMETER EARTH FIG . 7. - Apparatus for measuring current between cylinder and co - axial rod immersed in ionized ...
... vessel coaxial with the rod C. This vessel is connected to one pole of a battery of secondary cells , the other R C TO ELECTROMETER EARTH FIG . 7. - Apparatus for measuring current between cylinder and co - axial rod immersed in ionized ...
Pagina 43
... the mercury is insulated . The connection from the ionizing vessel to the electrometer is made through this mercury cup . ELECTROSCOPE When a small current through an ionizing chamber of METHODS OF MEASURING CURRENTS 43.
... the mercury is insulated . The connection from the ionizing vessel to the electrometer is made through this mercury cup . ELECTROSCOPE When a small current through an ionizing chamber of METHODS OF MEASURING CURRENTS 43.
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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