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  • Percy Spencer
  • One day...
  • When...
  • Percy Lebaron Spencer (July 19, 1894-September 8, 1970) was an American physicist and inventor. He was an engineer at Raytheon. 
  • Then...
  • In 1945, Spencer was working with a microwave-emitting magnetron.
  • After that...
  • He noticed that a chocolate bar in his pocket had melted.
  • Currently...
  • He did some experiments cooking popcorn and an egg. 
  • He created a huge metal box which electromagnetic field had no way to escape. Became available to the public in 1947.
  • Microwave ovens are so quick and efficient because they heat food in a short time that helps to save time.
  • Nescafé
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