Snippet: New explanation for plasma grapes

Thermal cameras revealed a hotspot between the grapes from a buildup of electromagnetic energy—not inside the grapes where the old explanation would predict. This led the physicists to a new explanation: When two grapes are close to each other in a microwave, the waves they absorb bounce back and forth in the tiny space between them, creating an increasingly powerful electromagnetic field. This continues until the electromagnetic field becomes so powerful that it supercharges nearby electrolytes that then s