Tel tron Maltese Cross Tube D
Product Code : JA-APE-7304
The Tel tron Maltese Cross Tube D (SKU JA-APE-7304) is a high-vacuum Maltese cross tube in which a divergent electron gun is aimed at a fluorescent screen partly blocked by a cross. Supplied by JaincoLab, it gives a clear classroom demonstration that electrons travel in straight lines: with no field applied, the cross throws a sharp shadow on the glowing screen. Adding a magnetic field lets students explore simple electron optics.
Specifications
The D-series tube contains a divergent electron gun and a Maltese cross placed in front of a fluorescent screen, so the screen glows everywhere except where the cross blocks the electrons; voltages and dimensions are not in the listed data and are confirmed on the quotation.
| Product | Tel tron Maltese Cross Tube D |
| SKU | JA-APE-7304 |
| Brand and series | Tel tron, D series |
| Tube type | High-vacuum electron tube |
| Electron gun | Divergent |
| Screen | Fluorescent, partly obscured by a Maltese cross |
| Main demonstration | Straight-line travel of electrons shown by the shadow of the cross |
| Field experiments | Magnetic field from Helmholtz coils for beam focusing |
Demonstrations with the Maltese cross tube
Teachers use the tube first without any field, to show the sharp shadow that proves electrons move in straight lines, and then with a magnetic field from Helmholtz coils to show how the field acts on the beam, including focusing.
- Showing the rectilinear propagation of electrons by the shadow of the Maltese cross
- Introducing electron optics and beam focusing with a magnetic field
- Class discussion of cathode rays using the sharp shadow on the screen
- Cathode-ray topics in senior-secondary physics and B.Sc practicals
Scope of supply and ordering
One Tel tron Maltese Cross Tube D is covered by this listing. The Tel tron Tube Holder D, the Helmholtz Pair of Coils D and the power supply for the tube are not included and are listed or quoted separately. Accessories, spares and quantities are confirmed on the quotation.
Minimum order quantity, lead time and packing are confirmed on each quotation according to the quantity and delivery destination. The tube can be quoted singly for a demonstration bench, in sets for several laboratories, or in bulk for tenders, with export supply to Africa, the Middle East and South and South-East Asia.
Frequently asked questions
What does the Maltese Cross Tube D show?
With no field applied, the Maltese cross casts a sharp shadow on the fluorescent screen, showing that electrons travel in straight lines from the gun.
Can it be used for electron optics?
Yes. Applying a magnetic field with Helmholtz coils lets students study basic electron optics, such as focusing the beam.
What else is needed to run the demonstration?
The tube mounts on the Tel tron Tube Holder D, and magnetic-field work uses the Tel tron Helmholtz Pair of Coils D; both are separate listings, and the power supply is confirmed on the quotation.
Related products
- Tel tron Tube Holder D
- Tel tron Helmholtz Pair of Coils D
- Maltese Cross Cathode Ray Tube
- Tel tron Perrin Tube D
Compare other cathode-ray and electron tubes in the atomic physics equipment range, or see all physics lab equipment from JaincoLab.
Request a quote
To ask for a price on the Tel tron Maltese Cross Tube D, send the quantity and destination through the JaincoLab contact page or email [email protected]. For tender or project supply, see our tenders page.
