The plasma physics of grapes in the microwave

The arc between two grapes when heated in a microwave oven.

Ever wondered why sparks fly when you microwave two closely spaced grapes? While this simple way of generating a spectacular plasma has intrigued the general public, there has also been a long-running debate about exactly what physics is involved in the process. Dr Kwo Ray Chu and his team at National Taiwan University have recently unraveled the physics behind it. […]

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