1. Go into
a dark room with the light bulb
and the comb (woollen scarf).
2. Run the comb through your
hair around 20 times. You
could rub the comb over a woollen
scarf for the same effects.
3. Place the comb on the metal
end of the light bulb and watch
as the filament in the bulb lights
The friction between your hair
and the comb causes electrons to
travel from your hair to the comb.
This causes your body to become
positively charged and the comb
becomes negatively charged.
With the comb being charged, it
discharges into the light bulb causing
the bulb to emit the small pulses