PEEPER on Instagram: "This clip shows physicist Walter Lewin demonstrating Bernoulli’s principle using a simple but memorable experiment. Bernoulli’s principle states that as the speed of a fluid increases, its pressure decreases. In the demonstration, fast-moving air flowing across an opening lowers the pressure inside, allowing liquid to rise against gravity. It’s the same principle behind airplane lift, carburetors, and many everyday fluid systems. While the setup looks dramatic, it’s careful