Free Electrons in Gases and in a Vacuum

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Cathode Ray Tube £485.32 Spare tube for the training oscilloscope Straightforward to use Easy to connect Replacement cathode ray tube	Electron Deflection Tube D Experiment Kit £1,668.44 Great value kit for electron deflection experiments Electron deflection tube allows study of the effects of electric and magnetic fields Also contains a tube holder, Helmholz coils and AC & DC power supplies Charge and velocity of the electrons can be determined	Fine Beam Tube T £622.00 Additional tube for the Complete Fine Beam Tube System Replacement tube for the system Cost-effective solution for optimum working condition Straightforward and easy to use and attach


Gas Discharge Tube £251.54 Observe luminous effects of electrical discharges Works with low pressure Glass tube with graded seal Straightforward with visible results	Gas Discharge Tube S £323.56 Glass tube with fluorescent screens Suitable for observing electrical discharge Needle ventilation valve and vacuum hoses provided Can be dismounted and use with Tube Holder S	Operating Unit for Fine Beam Tube £1,422.85 Additional or replacement unit for the Complete Fine Beam Tube System Connects with the Helmholtz Coils and Tube Three-digit digital display for easy monitoring Straightforward and easy to connect


Protective Adaptor (2-Pole) £73.07 Protects the heating filament from excess voltage Designed for a range of apparatus Internal circuitry for additional safety Connects with the two-pole dimensions	Protective Adaptor (3-Pole) £73.07 Protects the heating filament from excess voltage Designed for use with the Electron Diffraction Tube D Internal circuitry for additional safety Connects with the three-pole dimensions	Teltron Auxiliary Coil £172.98 Suitable for use with the Perrin Tube D Provides an extra coil Helps create an additional magnetic field Demonstrates the principles of oscilloscope


Teltron Diode D £352.42 Vacuum electron tube with thermionic cathode and anode Suitable for investigating the Edison effect Demonstrates the rectifying effect of a diode Straightforward to use with visible results	Teltron Diode S £352.42 Vacuum electron tube with thermionic cathode and anode Suitable for investigating the Edison effect Demonstrates the rectifying effect of a diode Straightforward to use with visible results	Teltron Dual Beam Tube D £733.77 Electron tube part filled with helium Electron path is visible due to helium atoms Suitable for monitoring the specific charge from the beam Visible results and straightforward to use

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