How Everything Works
How Everything Works How Everything Works

Question 569

Were microwaves invented for the microwave oven?
While microwaves were known long before anyone know how to produce them efficiently, they became important during World War II as the basis for radar. The ability to detect and locate enemy aircraft at long distances and at night was crucial to the defense of Allied cities during the war. The 1945 discovery that microwaves also cooked food was an accidental offshoot of radar development.

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