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Hertz electron tube for quantitative investigations of inelastic collisions of electrons with inert gas atoms, determination of ionization energies of helium, as well as resolution of the energy states of various primary and orbital angular ... more

Tube holder to support all S series (student) electron tubes for easy and safe operation. The five pin sockets for the tube are concealed inside the tube holder. A cathode protection switch is integrated into the tube holder, to protect the ... more

Pair of Helmholtz Coils for generating a uniform magnetic field perpendicular to the axis of the Teltron S series tube. Teltron Tube Holder S allows the coils to be configured in the Helmholtz geometry or at variable distances to produce ... more

High-vacuum electron tube with thermionic cathode for demonstrating the thermoelectric effect (Edison effect). Use the tube to investigate the relationship between measured emission current and the voltage applied to the cathode. Also investigate ... more

High-vacuum electron tube with thermionic cathode and control grid for demonstrating the thermoelectric effect (Edison effect). Use the tube to investigate the practical applications of a triode as an amplifier and generating undamped oscillations ... more

High-vacuum electron tube with divergent electron gun and three, colored fluorescent strips. Demonstrate stimulated light emission during and after electron bombardment of a phosphorus anode. The anode also fluoresces when illuminated with ... more

High-vacuum electron tube with divergent electron gun aimed at a fluorescent screen partially obscured by a Maltese cross. For demonstrating the linear propagation of electrons in the absence of applied electromagnetic fields by projecting ... more

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 ... more

High-vacuum electron tube with high-accuracy electron gun and ruled target phosphorescent screen. Determine the fundamental electron charge-to-mass ratio (e/m), study mean electron velocities using field cancellation, and explore electron ... more

Electron tube filled with low-pressure helium gas, and containing a thermionic cathode, control grid, and anode. This tube is for quantitative investigations of the typical properties of a gas-immersed triode, recording the current-potential ... more

For quantitative investigations of the typical properties of a gas-filled triode, recording the IA - UA characteristics of a thyratron. Observing independent and dependent discharges as well as discontinuous energy release of Ne atoms during ... more

Part evacuated electron tube, filled with neon at low pressure, with tangential and axial electron gun. For determining specific charge e/m from the diameter of the filament beam in the case of tangential bombardment and a perpendicularly aligned ... more

Highly evacuated electron tube for demonstrating the wave nature of electrons through the observation of interference caused by passage of electrons through a polycrystalline graphite lattice (Debye-Scherrer diffraction) and rendered visible ... more

Tube holder made of robust plastic for holding D-series electron tubes. Stand has a wishbone, 360° rotating clamp made of heat-resistant plastic and two base holes for affixing the Teltron Helmholtz Coils D (U191051). On rubber feet to ... more

Pair of Helmholtz coils for generating a uniform magnetic field perpendicular to the axis of the Teltron D series tubes. Teltron Tube Holder D allows the coils to be configured in the Helmholtz geometry or to produce magnetic fields aligned ... more

The Auxiliary Coil can be used to apply crossed magnetic fields vertically with respect to the tube axis, if the coil is mounted on the universal holder between the Helmholtz coils. Such fields can be used to demonstrate the horizontal deflection ... more

High-vacuum electron tube with thermionic cathode for demonstrating the thermoelectric effect (Edison effect). Use the tube to investigate the relationship between measured emission current and the voltage applied to the cathode. Also investigate ... more

High-vacuum electron tube with thermionic cathode and control grid for demonstrating the thermoelectric effect (Edison effect). Use the tube to investigate the practical applications of a triode as an amplifier and generating undamped oscillations ... more

High-vacuum electron tube with divergent electron gun and three, colored fluorescent strips. Demonstrate stimulated light emission during and after electron bombardment of a phosphorus anode. The anode also fluoresces when illuminated with ... more

High-vacuum electron tube with divergent electron gun aimed at a fluorescent screen partially obscured by a Maltese cross. For demonstrating the linear propagation of electrons in the absence of applied electromagnetic fields by projecting ... more

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 ... more

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 ... more

Electron tube filled with low-pressure helium gas, and containing a thermionic cathode, control grid, and anode. This tube is for quantitative investigations of the typical properties of a gas-immersed triode, recording the current-potential ... more

Part evacuated electron tube, filled with neon at low pressure, with tangential and axial electron gun. For determining specific charge e/m from the diameter of the filament beam in the case of tangential bombardment and a perpendicularly aligned ... more

Highly evacuated electron tube for demonstrating the wave nature of electrons through the observation of interference caused by passage of electrons through a polycrystalline graphite lattice (Debye-Scherrer diffraction) and rendered visible ... more

Self-extinguishing halogen-trigger counter tube for registering alpha-, beta-, gamma- and X- radiation. Enclosed in a plastic housing with a holder for mounting on the swiveling arm of the X-ray apparatus (U19200); equipped with a firmly installed ... more