Modern Physics > Atomic Physics > Electron Properties
DCS# 7B35.50
PADDLE WHEEL
APPARATUS
paddle wheel
tube on stand
202-19-B1
induction
coil
202-18-B-1
DESCRIPTION
The electron beam will turn the
paddle wheel, demonstrating that electrons have momentum. Reverse
the polarity of the voltage and the paddle wheel will change
direction. As an added bonus, the paddle wheel fluoresces.
Use caution around the high voltage power supply and exposed
contacts.
