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2. Microwave oven - Wikipedia

   en.wikipedia.org/wiki/Microwave_oven

   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 vibrate [ 2 ] and produce thermal energy in a process known as dielectric heating .

3. Microwave - Wikipedia

   en.wikipedia.org/wiki/Microwave

   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 ...

4. Infrared - Wikipedia

   en.wikipedia.org/wiki/Infrared

   This range of wavelengths corresponds to a frequency range of approximately 430 THz down to 300 GHz. Beyond infrared is the microwave portion of the electromagnetic spectrum. Increasingly, terahertz radiation is counted as part of the microwave band, not infrared, moving the band edge of infrared to 0.1 mm (3 THz).

5. Pressure cooker - Wikipedia

   en.wikipedia.org/wiki/Pressure_cooker

   A pressure oven is a recent combination of an oven and pressure cooker, usually as a countertop convection oven. Pressure ovens operate at low pressures, 10 kilopascals (1.5 psi), compared to other pressure cookers. [32] Their main function is as an enhanced oven or broiler for meat and poultry, avoiding drying. As such, they often include a ...

6. Timeline of historic inventions - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_historic...

   1940: John Randall and Harry Boot would develop the high power, microwave generating, cavity magnetron, later applied to commercial Radar and Microwave oven appliances. [478] 1941: Polyester is invented by John Rex Whinfield and James Dickson. [479] 1942: The V-2 rocket, the world's first long range ballistic missile, developed by engineer ...

7. List of British innovations and discoveries - Wikipedia

   en.wikipedia.org/wiki/List_of_British...

   Engineers during World War Two test a model of a Halifax bomber in a wind tunnel, an invention that dates back to 1871.. The following is a list and timeline of innovations as well as inventions and discoveries that involved British people or the United Kingdom including the predecessor states before the Treaty of Union in 1707, the Kingdom of England and the Kingdom of Scotland.