A ball is placed in a funnel and the funnel is connected to a reversed vacuum cleaner that provides a continuous supply of air. As the air flows out out of the funnel at a high velocity, the pressure ...

Place your ball of yarn in a funnel and pull the thread through to more easily stabilize and detangle it without having to go ...

For a 'street science' experiment I approached holidaymakers with a ping-pong ball and a funnel, to show them a classic and counterintuitive science demonstration. It involves something known as ...