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Is It Hot in Here?

  • March 21, 2012
  • By KIDS DISCOVER

Dr. Percy Spencer accidentally discovered the heating effect of microwaves while working on a radar-related project for the Raytheon Corporation in 1946. The first food he tested? Popcorn! He went on to invent the microwave oven.

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Kids Discover For over 25 years, we’ve been creating beautifully crafted nonfiction products for kids. With a specialty in science and social studies, our team of talented writers, award-winning designers and illustrators, and subject-experts from leading institutions is committed to a single mission: to get children excited about reading and learning.