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5304
Apparatus for the measurement of the e/m ratio
The main part cosists of a hot cathode Thomson’s tube, whose filament must be fed with a voltage of 6,3V ac and whose anode must be fed with a voltage of 1500-5000 V dc. The beam of electrons produced is deflected by an electric field produced by a generator of medium voltage and by magnetic field created by two Helmholtz reels. The measure of the electron specific charge can be determined with a percent mistake of 5% .
For the power supply of the apparatus, it is necessary to purchase both the following (or similar) generators cod. 5229 , 5324 and 5292 and N.9 safety electric cables code 5161.
As an alternative to the 5229 alternator, it is possible to purchase the 4991 power supply.
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