A Hot Invention

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Across
  1. 3. the man who invented the microwave oven
  2. 5. microwaves reach ______ food
  3. 6. Percy started bringing some of these near the magnetron
  4. 7. the original microwave costs ______ of dollars
Down
  1. 1. the results of this led to a change in how people cooked
  2. 2. these use tiny radio waves to track planes
  3. 3. the first microwave was 6 feet tall and over 700 _____
  4. 4. this melted in his pocket when he stood near a magnetron