Objective: Investigate the deflection of electrons by electric and magnetic fields
In a Thomson tube the vertical deflection of a horizontal electron beam can be observed on a fluorescent screen. Such a deflection can be generated by a vertical electric field or by a horizontal magnetic field that is perpendicular to the direction of motion in the horizontal plane.
![Experiment: Thomson Tube (115 V, 50/60 Hz), 8000665 [UE3070500-115], Electron tubes](/imagelibrary/UE3070500-115/UE3070500-115_01_Experiment-Thomson-Tube-115-V-5060-Hz.jpg)
![Experiment: Thomson Tube (115 V, 50/60 Hz), 8000665 [UE3070500-115], Electron tubes](/thumblibrary/UE3070500-115/UE3070500-115_01_1200_1200_Experiment-Thomson-Tube-115-V-5060-Hz.jpg)
