Electricity and Magnetism

Forceful Comb

At home for 11-14 14-16

M&M - Forceful Comb

What you need

  • A nylon comb
  • A water tap


  1. Turn on the tap until you have a very thin stream of water
  2. Now grab your comb
  3. Run the comb through your hair several times
  4. Slowly bring the comb towards the water, 10cm below the tap

Results and Explanation

When the comb is about 3cm away, the water bends towards it! Some objects, like hair and plastic, develop an electrical charge when rubbed together.

The charge in your comb attracts tiny electrical charges in the water molecules, pulling them towards it.

These experiments have not been specifically safety tested for home use but we believe them to be safe if the instructions are followed. Adult supervision or direction is recommended as appropriate. All experiments are carried out at your own risk.

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