Video: Watch this demo
Description: This demonstration shows what happens when you bring a magnet near a CRT television screen.
The magnet bends the electron beam so the electrons no longer hit the correct phosphors on the screen, which interferes with the colors and the displayed image.
- Color Cathode Ray Tube (will not work correctly after demo)
- Large magnet
- Electric Magnetizer
- Using the electric magnetizer, magnetize two bar magnets.
- Tune the TV to either a white screen or a video feed.
- Bring the magnet near the screen and note the changes in color and screen distortions.