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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 in a process known as dielectric heating .
1940s. The first Kenwood product was a toaster invented by Kenneth Wood, which was brought to market in 1947, known as the A100. 1950s–1960s. Three years later in 1950, the first version of the Kenwood Chef Kitchen machine was launched at the Ideal Home Exhibition.
Small synchronous motor with integral stepdown gear from a microwave oven. A synchronous electric motor is an AC electric motor in which, at steady state, [1] the rotation of the shaft is synchronized with the frequency of the supply current; the rotation period is exactly equal to an integer number of AC cycles.
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 ...
A modern double oven. This is a list of oven types. An oven is a thermally insulated chamber used for the heating, baking or drying of a substance, [1] and most times used for cooking or for industrial processes (industrial oven). Kilns and furnaces are special-purpose ovens.
The magnetron remains the essential radio tube for shortwave radio signals of all types. It not only changed the course of the war by allowing us to develop airborne radar systems, it remains the key piece of technology that lies at the heart of your microwave oven today. The cavity magnetron's invention changed the world. [5]