In this video I use Bernoulli's Principle to keep a ball floating in air. Bernoulli's Principle states that high speed fluids create low pressure. It's also important to know the high pressure tends to flow or push toward low pressure. When the ball is in the air stream it's surrounded by low pressure due to the fast moving air around the ball. It's the high pressure air away from the ball that keeps the ball in place. It's also important to know that the ball is balanced vertically in the air flow due the force of the rising air counteracting the downward force of gravity.
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Floating Ball Trick - A Demonstration of Bernoulli's Principle
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