Why do grapes spark in the microwave?

Subject: Why do grapes spark in the microwave?

Date: Tue Oct 28 22:59:55 1997
Posted by Judith Diamond
Grade level: teacher/prof
School: Adult Learning Resource Center
City: Des Plaines State/Province: IL
Country: US
Area of science: Physics
ID: 878101195.Ph

Message:

If you place two grapes with their 'raw' ends almost touching in the 
bottom of a microwave (you need no dish) and turn on the 
microwave--the grapes will spark mightily.  This does not work with 
any other type of fruit.  WHY?

Re: Why do grapes spark in the microwave?

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