Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis, so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied. The electron beam can be deflected electrically in the electric field of the built-in plate capacitor, and magnetically by using the Helmholtz coil pair D (U191051). By adjusting the electric field so that it cancels the magnetic deflection, it is possible to determine the specific charge e/m and the velocity of the electrons.
![Deflection Tube D, 1000651 [U19155], Teltron® Tubes](/imagelibrary/U19155/U19155_01_Deflection-Tube-D.jpg)
![Deflection Tube D, 1000651 [U19155], Teltron® Tubes](/imagelibrary/U19155/U19155_02_Deflection-Tube-D.jpg)
![Deflection Tube D, 1000651 [U19155], Teltron® Tubes](/imagelibrary/U19155/U19155_03_Deflection-Tube-D.jpg)
![Deflection Tube D, 1000651 [U19155], Teltron® Tubes](/thumblibrary/U19155/U19155_01_1200_1200_Deflection-Tube-D.jpg)
![Deflection Tube D, 1000651 [U19155], Teltron® Tubes (Small)](/thumblibrary/U19155/U19155_02_1200_1200_Deflection-Tube-D.jpg)
![Deflection Tube D, 1000651 [U19155], Teltron® Tubes (Small)](/thumblibrary/U19155/U19155_03_50_50_Deflection-Tube-D.jpg)
![DC Power Supply 20 V, 5 A, 1003311 [U33020-115], Power Supplies](/thumblibrary/U33020-115/U33020-115_01_140_140_DC-Power-Supply-20-V-5-A.jpg)
![DC Power Supply 20 V, 5 A (230 V, 50/60 Hz), 1003312 [U33020-230], Power Supplies](/thumblibrary/U33020-230/U33020-230_01_140_140_DC-Power-Supply-20-V-5-A-230-V-5060-Hz.jpg)
![Helmholtz Coils D, 1000644 [U191051], Electron Tubes D](/thumblibrary/U191051/U191051_01_140_140_Helmholtz-Coils-D.jpg)
![High Voltage Power Supply 5 kV, 1003309 [U33010-115], Power Supplies](/thumblibrary/U33010-115/U33010-115_01_140_140_High-Voltage-Power-Supply-5-kV.jpg)
![High Voltage Power Supply 5 kV (230 V, 50/60 Hz), 1003310 [U33010-230], Power Supplies](/thumblibrary/U33010-230/U33010-230_01_140_140_High-Voltage-Power-Supply-5-kV-230-V-5060-Hz.jpg)
![Protective Adapter, 2-Pole, 1009961 [U8557001], Electron Tubes D](/thumblibrary/U8557001/U8557001_01_140_140_Protective-Adapter-2-Pole.jpg)
![Set of 15 Safety Experiment Leads, 75 cm, 1002843 [U138021], Circuits](/thumblibrary/U138021/U138021_01_140_140_Set-of-15-Safety-Experiment-Leads-75-cm.jpg)
![Set of Experiment Leads for Electron Tube Experiments, 1002847 [U138101], Experiment Leads and Cables](/thumblibrary/U138101/U138101_01_140_140_Set-of-Experiment-Leads-for-Electron-Tube-Experiments.jpg)
![Tube Holder D, 1008507 [U191001], Electron Tubes D](/thumblibrary/U191001/U191001_01_140_140_Tube-Holder-D.jpg)
![Electron Diffraction Tube D, 1013885 [U191711], Electron Tubes D](/thumblibrary/U191711/U191711_01_140_140_Electron-Diffraction-Tube-D.jpg)
![Barrel Foot, 1 kg, 1002834 [U13265], Bases](/thumblibrary/U13265/U13265_01_140_140_Barrel-Foot-1-kg.jpg)
![DC Power Supply 0-500 V (230 V, 50/60 Hz), 1003308 [U33000-230], Power Supplies](/thumblibrary/U33000-230/U33000-230_01_140_140_DC-Power-Supply-0-500-V-230-V-5060-Hz.jpg)
![Protective Adapter, 3-Pole, 1009960 [U8557000], Electron Tubes D](/thumblibrary/U8557000/U8557000_01_140_140_Protective-Adapter-3-Pole.jpg)
![Pair of Safety Experiment Leads, 75 cm, blue, red, 1017718 [U13816], Experiment Leads and Cables](/thumblibrary/U13816/U13816_01_140_140_Pair-of-Safety-Experiment-Leads-75-cm-blue-red.jpg)
![Function Generator FG 100 (230 V, 50/60 Hz), 1009957 [U8533600-230], Function Generators](/thumblibrary/U8533600-230/U8533600-230_01_140_140_Function-Generator-FG-100-230-V-5060-Hz.jpg)
![Universal Clamp, 1002830 [U13255], Clamps](/thumblibrary/U13255/U13255_01_140_140_Universal-Clamp.jpg)
![Vibration Generator, 1000701 [U56001], Oscillations](/thumblibrary/U56001/U56001_01_140_140_Vibration-Generator.jpg)
![HF Patch Cord, BNC/4 mm Plug, 1002748 [U11257], Experiment Leads and Cables](/thumblibrary/U11257/U11257_01_140_140_HF-Patch-Cord-BNC4-mm-Plug.jpg)
![Spectrum Tube Power Supply (230V, 50/60 Hz), 1000684 [U418001-230], Spectrum Tubes and Spectrum Lamps](/thumblibrary/U418001-230/U418001-230_01_140_140_Spectrum-Tube-Power-Supply-230V-5060-Hz.jpg)
![Digital Counter (230 V, 50/60 Hz), 1001033 [U8533341-230], Measurement of Time](/thumblibrary/U8533341-230/U8533341-230_01_140_140_Digital-Counter-230-V-5060-Hz.jpg)
![Precision Dynamometer 2 N, 1003105 [U20033], Dynamometers](/thumblibrary/U20033/U20033_01_140_140_Precision-Dynamometer-2-N.jpg)
![Spectrum Tube Mercury, 1003412 [U41820], Spectrum Tubes and Spectrum Lamps](/thumblibrary/U41820/U41820_01_140_140_Spectrum-Tube-Mercury.jpg)