This easy and educational demonstration of electrostatic
principles is a box full of science fun. The kit comes
with a 33 X 33 X 5 cm wooden box, a clear plastic top,
several graphite-coated pith balls and a piece of rabbit
fur. Place some of the balls inside the box, cover, rub the
top of the box with the rabbit fur or your hand, and watch
the balls start to jump as the electrostatic charge is
transferred to them!
But there’s more – additional balls placed on top of the
box will seemingly jump away from the balls in the box,
demonstrating repulsion of like charges. And, if you rub
your hand across one half of the plastic top, and then try
to push the balls into the newly charged zone, the balls
always bounce back!
Instructions, complete with scientific background and
activities, are included.