@oboe_learning: This shouldn't work but it does! Professor Walter Lewin demonstrates Bernoulli's principle: blow air through a narrow gap and it speeds up, and wherever air moves faster, the pressure drops. That drop in pressure is what pulls the ping pong ball in instead of blowing it away, even though everything in you says blowing harder should push it out. Same reason airplane wings generate lift and shower curtains get sucked in on you. Credits to Professor Walter Lewin #physics #bernoulliprinciple #scienceexperiments #Science #howthingswork