Oscilloscope Crt - Deflection By Magnet

Purpose

To demonstrate magnetic deflection of an electron beam.◙
 

Equipment

CRT with power supply and small bar magnet.

 

Images

k1-14

Description

The beam of an oscilloscope CRT is viewed at the front on the fluorescent screen in the standard way. Holding a magnet near the CRT such that the magnetic field is perpendicular to the path of the electrons creates a magnetic force on the electron beam which deflects the beam, as can be seen on the fluorescent tube.
 

References

J. G. Shepard, Magnetic Experiments with a Cathode Ray Tube, TPT 5, 153-155, (1967). ◙Tektronix T0510 Performance Curves, CRT Data, (1965). ◙Schematic Diagrams for Oscilloscope Circuits.