- LED lamps flash brightly when the coil they are connected to is pulled through the
poles of a strong radar magnet.
- Orient the mark on the handle with the N pole of the magnet, slowly insert the coil
between the poles, then pull it out quickly.
- CAUTION: LEDs emit UV light, stay back from the audience.
Keep magnet at least 1/2 m away from ALL other ferromagnetic materials.