How does a microwave oven heat up your Hot Pockets?

How was the microwave oven accidentally invented? What are microwaves? Why should you never put metal in a microwave oven? For free home activities sign-up at www.WhoSmarted.com

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.