This is a fun experiment with Air Pressure. Fix two balloons to the ends of the two rubber tubes. Place both balloons in a round bottom flask and shut the cork. Then loosen the cork and blow through any tube to inflate one balloon. Then fix the cork back. Now by blowing and sucking through any tube you can inflate and deflate the balloons.
http://www.arvindguptatoys.com/toys/pressure.html This work was supported by IUCAA and Tata Trust. This film was made by Ashok Rupner TATA Trust: Education is one of the
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