- Straight, rigid wire hangs between poles of strong magnet.
When current is sent through wire, wire is deflected. Direction of deflection
depends on direction of current. - For setup assistance, ask Lab Lecturer.
deflection
e-beam in B-field
Purpose: Demonstrate the magnetic deflection of an electron
beam.
- Crookes tube contains a white screen that fluoresces green when electrons collides with it. High voltage applied across the anode and cathode accelerate electrons through tube. Electron beam can be deflected using magnetic field of bar magnet.
ALWAYS USE THE MINIMUM VOLTAGE AND CURRENT NECESSARY TO OPERATE CROOKES TUBE.
Location
- Crookes Tube: L01, section B3
- Kilovolt Power Supply: L01, section A1
- Magnet: L01, section B2
- Cables: L01, or L35 (hanging on wall)