Watch the Slow Mo Guys spin a levitating apple until it explodes

In the latest video from YouTubers The Slow Mo Guys, curious camera operator and host Gavin Free used a defenceless apple and a 150psi air compressor to demonstrate the Coandă effect. This is when a moving fluid which comes in contact with a convex surface follows its curve, rather than continuing on its initial path.

“As the jet of air bounces off one side of the apple, it creates an area of low pressure between the air and the curved surface,” explained Free. “This area of low pressure effectively pulls in the airflow, allowing it to follow the curve of the apple. At this point, as the curved surface of the apple is putting a force on the air, the air exerts an equal and opposite force upward on the apple.” Read more…

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