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A microwave oven or simply microwave is an electric oven that heats and cooks food by exposing it to electromagnetic radiation in the microwave frequency range. [1] This induces polar molecules in the food to rotate and produce thermal energy (heat) in a process known as dielectric heating .
In 1960, a built-in barbecue unit could be added to a cooktop. [8] By 1964, all O'Keefe and Merritt electric ovens had built-in clocks that could be used to turn on the oven, cook for a certain time, and then turn off the oven. [9] In 1965, O'Keefe and Merritt sold, among other models, a 36-inch range and a 21 inch wide oven.
At war's end in 1945, the company had built about 80 percent of all magnetrons. Raytheon ranked 71st among U.S. corporations in the value of World War II military production contracts. [13] In 1945, Raytheon's Percy Spencer invented the microwave oven by discovering that the magnetron could rapidly heat food. In 1947, the company demonstrated ...
The modern magnetron is a fairly efficient device. In a microwave oven, for instance, a 1.1-kilowatt input will generally create about 700 watts of microwave power, an efficiency of around 65%. (The high-voltage and the properties of the cathode determine the power of a magnetron.)
Amazon Prime Day 2023 ends today, July 12. Le Creuset Prime Day deals bring up to 25% off a Dutch oven, cast iron pan, grill pan, and more.
Tappan is a brand of appliances, named after company founder W. J. Tappan. [1] [2]Tappan claimed several innovations: 1930s all-porcelain range available in various colors [2]
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