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A microwave oven uses dielectric heating to cook food.. Dielectric heating, also known as electronic heating, radio frequency heating, and high-frequency heating, is the process in which a radio frequency (RF) alternating electric field, or radio wave or microwave electromagnetic radiation heats a dielectric material.
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 .
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 ...
Microwave ovens put out 1,000 watts commonly, and still the unfocused beam degrades exponentially in air, to the point that a couple meters is safe distance from an unfocused, operating magnetron. in contrast, microwave transmission antennas usually use 1 or 2 watts of power. they are focused/colliminated, and are yet still not powerful enough to cause the mentioned deep tissue burns.
Spray a microwave plate with cooking spray or lightly grease with butter. Crack an egg onto the plate and lightly prick the yolk with the tip of a knife. Microwave on high 45 seconds.
Ingredients: 8 oz (225g) lean ground beef. ½ cup (60g) onion, finely minced. 1 teaspoon garlic powder. ½ teaspoon black pepper. ½ teaspoon salt. ½ teaspoon dried thyme or oregano
Production truck used for remote broadcasts by television news has a microwave dish on a retractable telescoping mast to transmit live video back to the studio. Obstacles, the curvature of the Earth, the geography of the area and reception issues arising from the use of nearby land (such as in manufacturing and forestry) are important issues to ...
Since a dielectric resonator can be thought of as a truncated dielectric rod waveguide, this research was essential for scientific understanding of electromagnetic phenomena in dielectric resonators. In 1939 Robert D. Richtmyer published a study [ 4 ] in which he showed that dielectric structures can act just as metallic cavity resonators.
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