Physics equipment
Teltron Maltese Cross Tube S
A highly evacuated demonstration tube with an electron gun — a tungsten hairpin filament and a cylindrical anode housed in a clear glass bulb — whose diverging beam is made visible on a fluorescent screen. An aluminium Maltese cross suspended in the bulb casts a shadow, demonstrating that cathode rays travel in straight lines when no electric or magnetic field is present. Applying a magnetic field deflects and focuses the beam, providing an introduction to electron optics and to electrostatic charging effects. A 3-mm hole in the lower limb of the cross makes the orientation of the shadow easy to follow.
Specifications
- Brand
- 3B Scientific · 1000011
- Filament voltage U F
- max. 6,3 V AC/DC
- Anode voltage U A
- 2000 V – 5000 V
- Anode current I A
- typ. 20 µA at U A = 4500 V
- Voltage at cross
- 2000 V – 5000 V
- Current at cross
- typ. 75 μA at U A = 4500 V
- Glass bulb
- 130 mm Ø, approx
- Fluorescent screen
- 85 mm Ø
- Total length
- 260 mm approx
- Weight
- 0.7 kg
- Dimensions
- 35.1 x 28.2 x 22.1 cm
from
€831.00
Variants & pricing
Teltron Maltese Cross Tube S
1000011€831.00