The diode is used to show the basic thermionic effects in vacuum tubes, including: Current flow between an incandescent filament and a cold electrode (the...

Demonstration Tubes & Stands

UNIVERSAL STAND

$393.56

Designed to accommodate the whole range of Teltron tubes and accessories. The base, 240mm x 180mm x 50mm, and a vertical arm of the stand,...

Demonstration Tubes & Stands

TEL-X-OMETER

$11,376.06

The Tel-X-Ometer enables investigations to be carried out in the normal school laboratory. Extensive safety precautions are built into the apparatus, which conforms completely to...

Demonstration Tubes & Stands

ELECTRON DIFFRACTION TUBE

$1,332.33

The tube uses an electron gun with an indirectly heated cathode to project a narrow converging beam of electrons through a thin layer of graphiticised...

Demonstration Tubes & Stands

DOUBLE FINE BEAM TUBE

$1,393.82

Helium filled, partly evacuated electron tube with axial and perpendicular electron guns. The electron beam may be observed as a fine, green beam appearing due...

Demonstration Tubes & Stands

PERRIN TUBE

$953.13

The Perrin tube may be used to show that charge can be accumulated in the Faraday pail incorporated, that the charge does not disappear when...

Demonstration Tubes & Stands

DEFLECTION E/M TUBE

$1,209.35

For determining e/m by balanced electrostatic deflections or by magnetic deflection using the Helmholtz coils. Simple electrostatic and magnetic deflection may be demonstrated and the...

Demonstration Tubes & Stands

MALTESE CROSS TUBE

$830.15

For showing the linear propagation of cathode rays, magnetic deflection of cathode rays, image distortion due to electrostatic charging, comparison of cathodic stream and electromagnetic...

Demonstration Tubes & Stands

HELMHOLTZ COIL PAIR

$573.93

When connected to a suitable d.c. supply, the coils provide a substantially uniform field in the central space. Each coil has a molded plastic former...

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