Try this!

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by Redzone at December 01, 2010

Materials:

• Drinking glass with a smooth rim
• Small square of cardboard about three inches square

Procedure: Work over a sink!

1. Fill the drinking glass with water up to the brim.
2. Place the cardboard on top of the glass and hold it down. Some extra water may escape.
3. Hold the cardboard against the glass with your fingers and turn the glass over.
4. Carefully remove your fingers.
5. You should be surprised and amazed by this strange occurrence.
6. Repeat the experiment with a new piece of cardboard and only one inch of water in the glass.