What you need
- Dark room
- Light bulb
Go into a dark room with the light bulb and the comb.
Run the comb through your hair around 20 times.
Place the comb on the metal end of the light bulb and watch as the filament in the bulb lights up.
- 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 small pulses of light energy.