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Percy Spencer was born on July 9, 1984, was a US marine radar expert during World War II. Later was an engineer at Raytheon Corporation.
One day the engineer Percy Spencer, was working on the magnetrons to find a better way to improved the radar. He decided to walk in the street, and in his pocket was having a chocolate and a magnetron.
So he decided to eat his snack, but surprisingly the chocalate was melted.
So he wanted to prove how the chocolate melted, so he put a bag of popcorn to see what happenned.
When he comes to watch the popcorn, he saw that the popcorn were cooked.
He discovered when the electromagnetic waves in low intensity can heat the food. In 1947 the first microwave oven was created, but it was very expensive.
It's usefulness is practical and makes it possible to keep frozen food and heat them quickly. Nowadays is one of the essential and most used appliances in any house in the world.
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