Bernoulli Effect -Can Attraction

Place 12 to 15 straight straws parallel to one another on a table top. Leave about 1/2 inch space between each straw. Set two empty aluminum soda cans on top of the straws a few inches apart. Blow air between the cans. Although is seems like the cans will be blown apart, they will actually be pulled together. This happens because the airflow creates a low pressure zone between the cans. The normal air pressure on the left and right sides of the cans will force them together.