Maltese Cross Cathode Ray Tube
Product Code : JA-APE-9392
The Maltese Cross Cathode Ray Tube (SKU JA-APE-9392) is one of the four Crookes tubes used to demonstrate the properties of electrons, and it shows that electrons cannot pass through a metal screen. In this Maltese cross tube for cathode ray shadow demonstrations, a metal cross in the path of the electrons blocks them, so a sharp cross-shaped shadow appears at the glowing end of the tube, showing that cathode rays travel in straight lines from the cathode.
Specifications
The tube is a highly evacuated, fragile glass Crookes tube containing a metal Maltese cross; after mounting in its holder it is run from a variable 2-12 V DC supply and a high-voltage DC source through two sets of connecting leads.
| Product | Maltese Cross Cathode Ray Tube |
| SKU | JA-APE-9392 |
| Type | Crookes tube, Maltese cross version |
| Demonstrates | Electrons cannot pass through a metal screen |
| Construction | Highly evacuated glass chamber, fragile; mount in the holders provided before connecting |
| Required to operate | Variable DC power supply 2-12 V; high-voltage DC source; two sets of leads (banana plugs and alligator clips) |
| Related tubes | Paddle Wheel, Magnetic Effect and Electrostatic Deflection versions |
Demonstrations with the Maltese cross tube
The Maltese cross tube is usually the first cathode ray demonstration, because the sharp shadow of the cross shows at once that something travels in straight lines from the cathode and is stopped by metal.
- Showing that electrons cannot pass through a metal screen
- Demonstrating that cathode rays travel in straight lines
- Introducing the properties of electrons before the deflection experiments
- Class demonstrations alongside the other Crookes tubes
Scope of supply
The listing covers the Maltese cross Crookes tube. The 2-12 V DC supply, high-voltage DC source, connecting leads, spares and quantities are confirmed on the quotation.
Packing, MOQ and lead time
Minimum order quantity, lead time and packing are confirmed on each quotation according to the quantity and delivery destination. JaincoLab supplies cathode ray tubes singly or as sets of all four Crookes tubes for colleges, schools and education projects, and exports to buyers in Africa, the Middle East and South and South-East Asia.
JaincoLab manufactures and exports laboratory equipment for Ministry of Education programmes, World Bank-funded tenders and United Nations projects, and has executed these supplies successfully in many countries. Contractors bidding for such tenders can contact JaincoLab for specifications, quotations and turnkey tender supply.
Frequently asked questions
What does the Maltese cross tube demonstrate?
It shows that electrons cannot pass through a metal screen.
What equipment is needed to run it?
A variable 2-12 V DC power supply, a high-voltage DC source and two sets of connecting leads, one with banana plugs and one with alligator clips.
Is the tube fragile?
Yes. Crookes tubes are highly evacuated glass chambers; handle them with great care and mount them in their holders before making connections.
What should a quotation request include?
Send the SKU JA-APE-9392, the quantity, any power supplies needed and the delivery destination.
Related products
- Electrostatic Deflection Cathode Ray Tube
- Magnetic Effect Cathode Ray Tube
- Paddle Wheel Cathode Ray Tube
- EHT Power Supply
More Crookes tubes and atomic physics apparatus are listed in Atomic Physics Equipment from JaincoLab, a physics lab equipment manufacturer in India.
Request a quote
To order the Maltese Cross Cathode Ray Tube, send the quantity and delivery destination through the JaincoLab contact page or email [email protected].
