PIRA Classification: 5B30.60
Description: A glass tube has two electrodes at each end. These electrodes are connected to a Wimshurst machine. A lit piece of smoke paper is placed in the tube. When the tube fills with smoke, the Wimshurst is cranked. The smoke dissipates. Strong electric field near the sharp edges creates a corona discharge. Smoke particles become charged and are repelled from the charges on the edges. This demo can work with only one electrode connected. Precipitators based on this principle are widely used for cleaning air.
Special Instructions: None
Condition: Good
Setup time: 2 minutes
Safety Issues: Make sure to discharge the Wimshurst machine properly, or you may receive a shock.