Professor Walter Lewin demonstrated Bernoulli’s principle using a simple yet striking experiment involving a funnel and a small ball. When he placed the ball inside the funnel and blew air through the narrow end, instead of being pushed out, the ball remained suspended inside. This phenomenon occurs because the fast-moving air around the ball creates a region of lower pressure compared to the surrounding still air, in accordance with Bernoulli’s principle. The higher pressure from the stationary

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