The Radioactive Substances: Their Properties and BehaviourK. Paul, Trench, Trübner & Company, Limited, 1908 - 301 pagini |
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Pagina vii
... ELECTROMETER 4 . QUADRANT ELECTROMETER NEEDLE • 5. DOLEZALEK TYPE OF ELECTROMETER • 6 . PAGE 31 36 37 39 8 . 9 . 10 . · ARRANGEMENT FOR MEASURING CURRENT THROUGH A GAS BETWEEN TWO PARALLEL PLATES BY QUAD- RANT ELECTROMETER 7 . APPARATUS ...
... ELECTROMETER 4 . QUADRANT ELECTROMETER NEEDLE • 5. DOLEZALEK TYPE OF ELECTROMETER • 6 . PAGE 31 36 37 39 8 . 9 . 10 . · ARRANGEMENT FOR MEASURING CURRENT THROUGH A GAS BETWEEN TWO PARALLEL PLATES BY QUAD- RANT ELECTROMETER 7 . APPARATUS ...
Pagina 35
... ELECTROMETER ELECTRIC currents through gases are usually exceedingly small , and except in cases of very intense ionization it is inconvenient , if not impossible , to measure them by means of a galvanometer by any of the ordinary ...
... ELECTROMETER ELECTRIC currents through gases are usually exceedingly small , and except in cases of very intense ionization it is inconvenient , if not impossible , to measure them by means of a galvanometer by any of the ordinary ...
Pagina 35
Their Properties and Behaviour Walter Makower. FIG . 3. - Old form of quadrant electrometer . Face page 36 FIG . 5. - Dolezalek type of quadrant electrometer .
Their Properties and Behaviour Walter Makower. FIG . 3. - Old form of quadrant electrometer . Face page 36 FIG . 5. - Dolezalek type of quadrant electrometer .
Pagina 35
... electrometers these pillars are of glass coated with shellac , but this insula- tion is very imperfect , and in the more modern instruments is replaced by supports of ebonite or amber . The needle is suspended by a quartz fibre , or a ...
... electrometers these pillars are of glass coated with shellac , but this insula- tion is very imperfect , and in the more modern instruments is replaced by supports of ebonite or amber . The needle is suspended by a quartz fibre , or a ...
Pagina 38
Their Properties and Behaviour Walter Makower. FIG . 5. - Dolezalek type of quadrant electrometer . Face page 39.
Their Properties and Behaviour Walter Makower. FIG . 5. - Dolezalek type of quadrant electrometer . Face page 39.
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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