How to make a glowing ball of plasma in your microwave with a grape.
Its the damnedest thing you've ever seen. Please realize that although we haven't actually damaged any of the ovens we've done this with, the potential exists to damage or destroy the microwave that this is done in, and the possibility also exists that it could harm a human being if the proper precautions are not made. Please see to it that you are willing to pay $200 for a new microwave before you try this, and that you have a fire extinguisher nearby. If you are under age 18, please seek the supervision of a parent or guardian. I accept no responsibility should this experiment cause damage or injury.