Are you a good cook? In the old day, people who lacked cooking skills probably had to rely on instant noodles and rice with fried egg for their dinners. However, modern day technology allows you to have hot gourmet meal of your choice in less than five minutes just by pushing a few buttons on a microwave oven. But have you ever wondered how microwave ovens were invented? You may be surprised to learn that the invention originated from radar equipment and a melted chocolate bar.
Microwaves are electromagnetic waves whose wavelengths fall between those of radio and infrared lights. Microwave beams were used originally in radar instrument to locate aircrafts during World War ll. One day, an American engineer named Percy Lebaron Spencer noticed that the chocolate bar in his pocket melted while he was operating the radar generator. It wasn’t warm in the control room, so he suspected that the microwave beams were the culprit. Soon after this serendipitous discovery, the first microwave oven was invented. This device was based on the principle that the high frequency of microwave beams can excite water, fat, and sugar molecules and make them vibrate, generating enough heat to cook the food. However, this frequency does not affect glass molecules, keeping a microwavable glass bowl cool throughout the cooking process. So the next time you are heating up your frozen dinner, be thankful for the melted chocolate bar and observant engineer that led led to led to the incredible invention known as “microwave ovens”.
Summary
This passage is about microwave ovens, Percy Lebaron is an American engineer and he was invented the first microwave oven by he noticed that the chocolate bar in his pocket melted while he was operating the radar generator.
Response
In the present, many people have busy business and don’t have time cooking. If you have microwave ovens in your kitchen , I think , it will help you so much. Microwave oven will save time for you. You have hot gourmet of your choice in less than five minutes just by pushing a few buttons on a microwave oven. However I think you shouldn’t use it every time because microwave oven must use electromagnetic.
Microwaves are electromagnetic waves whose wavelengths fall between those of radio and infrared lights. Microwave beams were used originally in radar instrument to locate aircrafts during World War ll. One day, an American engineer named Percy Lebaron Spencer noticed that the chocolate bar in his pocket melted while he was operating the radar generator. It wasn’t warm in the control room, so he suspected that the microwave beams were the culprit. Soon after this serendipitous discovery, the first microwave oven was invented. This device was based on the principle that the high frequency of microwave beams can excite water, fat, and sugar molecules and make them vibrate, generating enough heat to cook the food. However, this frequency does not affect glass molecules, keeping a microwavable glass bowl cool throughout the cooking process. So the next time you are heating up your frozen dinner, be thankful for the melted chocolate bar and observant engineer that led led to led to the incredible invention known as “microwave ovens”.
Summary
This passage is about microwave ovens, Percy Lebaron is an American engineer and he was invented the first microwave oven by he noticed that the chocolate bar in his pocket melted while he was operating the radar generator.
Response
In the present, many people have busy business and don’t have time cooking. If you have microwave ovens in your kitchen , I think , it will help you so much. Microwave oven will save time for you. You have hot gourmet of your choice in less than five minutes just by pushing a few buttons on a microwave oven. However I think you shouldn’t use it every time because microwave oven must use electromagnetic.
Miss Wannipha Narkweg
ID 1500101017 Section 6911 No. 10
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