Catalog :E-1265
E-1265 E/ M BY THOMSON METHOD (BAR MAGNET METHOD)
One of the most fascinating demonstration of modern physics in the controlled bending of stream of high speed electrons in a magnetic field. Measurement of the ratio of the charge on the electron to its equally minute mass imparts a stimulating sense of achievement. The apparatus consists of a 3" Cathode Ray Tube. Power Supply Unit to provide H. V. voltage to operate the Cathode Ray Tube and DC Voltage for deflection plates, three wooden stands and a pair of bar magnet. The tube is mounted on a wooden stand which has a groove cut at its bottom to fit into another stand with platform for placing two bar magnets. Third wooden stand provides a platform for Magnetometer for measuring the magnetic field along the axis of the tube. The Power Supply Unit provides all the voltages required to operate the tube. It supplies the positive voltage required to deflect the Electron Beam. This voltages can be varied by the deflection control and can be measured by Voltmeter given on the panel. The voltages on the deflection plates are interchanged by switch REVERSE so as to deflect the beam either upward or downward. The DEFLECTION of 1 cm. of the beam is adequate for the experiment. This deflection can be measured with sufficient accuracy on the centimeter scale provided with the apparatus. The MAGNETIC FIELD required for detection of the Electron Beam is produced by two bar magnets. The field is determined by two bar magnets. The field is determined by notting down the time of oscillation and the deflection of the needle of a small Magnetometer at points along the axis of the tube. Complete Instruction Manual is provided with the Apparatus experiment. Specifications :
Input : 230 Volts 50 c/s
E. H. T. : 800 Volts at 10 mA
Deflection Volts : 0 - 50 Volts at 15 mA
L. T. : 6.3 Volts at 2 A
Horizontal Deflection : By Bar Magnets
Vertical Deflection : By Internal built-in supply
Complete with wooden stand, Deflection Magnetometer, pair of Bar Magnet.
(i) Intensity, Focus Control are Provided.
(ii) Shift : Control Provided.
(iii) Deflection Voltage : Control Provided.
(iv) Voltmeter : 0 - 50 V DC.
(v) Reversing Switch for Plate.
(vi) Terminals : For Solenoid with Control. |
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