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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 1947, the first commercially produced microwave oven was about 6 feet tall, weighed about 750 lbs, and cost about $5,000 (equivalent to $70,410 in 2024). In 1967 the first more affordable, $495 (equivalent to $4,668 in 2024), and reasonably sized (counter-top) Radarange brand microwave oven was made available for sale, produced by Amana (a ...
A microwave oven passes microwave radiation at a frequency near 2.45 GHz (12 cm) through food, causing dielectric heating primarily by absorption of the energy in water. Microwave ovens became common kitchen appliances in Western countries in the late 1970s, following the development of less expensive cavity magnetrons. Water in the liquid ...
In 1947, just a year after Spencer’s snack food serendipity, the first commercial microwave oven hit the market. Called the “Radarange,” it weighed nearly 750 pounds and cost more than $2,000 .
Over time, ovens have become more high-tech in terms of cooking strategy. The microwave as a cooking tool was discovered by Percy Spencer in 1946, and with help from engineers, the microwave oven was patented. [12] The microwave oven uses microwave radiation to excite water molecules in food, causing friction and thus producing heat. [13]
The European Space Agency's Planck satellite has been gathering data since its launch in 2009, slowly building up a map of the cosmic microwave background radiation -- a distant remnant of the Big ...
Date invented Invented by Original purpose Civilian uses ASDIC: 1910s United Kingdom. France. Submarine detection Sonar: Radar: mid-1930s United Kingdom [1] [2] Early warning radar, air defence systems: Air traffic control systems, microwave oven: Walkie-talkie: 1930s Canada (Donald Hings) [3] United States (Alfred J. Gross, Motorola SCR-300)
The Panasonic HomeChef 4-in-1 Microwave Oven lets you air fry, bake, broil and microwave. This space-saving microwave oven comes supplied with a wire rack, a 14.2-inch glass turntable and an air ...