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Spencer

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  • Why does metal reflect microwaves?
    Because of free-moving electrons
  • What food exploded during one of his tests?
    An egg
  • What food did he test after the chocolate melted?
    Popcorn
  • What device was Spencer testing when he made the discovery?
    A magnetron
  • What melted in Spencer’s pocket during the experiment?
    A chocolate bar
  • What was the first food he intentionally cooked?
    Popcorn
  • Why were early microwaves not popular?
    They were huge and expensive
  • What year was the first commercial microwave oven released?
    1947
  • What is the main use of microwaves today?
    Heating and cooking food
  • What scientific principle allows microwaves to heat food?
    Microwaves make water molecules vibrate, creating heat
  • Who discovered the microwave oven by accident?
    Percy Spencer
  • True or False: Spencer was trying to cook food on purpose?
    False
  • What did Spencer build to safely contain microwave energy?
    A metal box (prototype microwave oven)
  • What do magnetrons produce?
    Microwaves
  • What company was Spencer working for during his discovery?
    Raytheon
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