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Microwave electrothermal thruster, also known as MET, is a propulsion device that converts microwave energy [1] (a type of electromagnetic radiation) into thermal (or heat) energy. These thrusters are predominantly used in spacecraft propulsion , more specifically to adjust the spacecraft’s position and orbit.
Leuco dyes are used in applications where temperature response accuracy is not critical: e.g. novelties, bath toys, flying discs, and approximate temperature indicators for microwave-heated foods. Microencapsulation allows their use in wide range of materials and products.
In agriculture, RF dielectric heating has been widely tested and is increasingly used as a way to kill pests in certain food crops after harvest, such as walnuts still in the shell. Because RF heating can heat foods more uniformly than is the case with microwave heating, RF heating holds promise as a way to process foods quickly. [8]
The FDA accepts that microwaves can be used to heat food for commercial use, pasteurization and sterilization. [4] The main mechanism of microbial inactivation by microwaves is due to thermal effect; the phenomenon of lethality due to 'non-thermal effect' is controversial, and the mechanisms suggested include selective heating of micro-organisms, electroporation, cell membrane rupture, and ...
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Microwave ovens have a limited role in professional cooking, [3] because the boiling-range temperatures of a microwave oven do not produce the flavorful chemical reactions that frying, browning, or baking at a higher temperature produces. However, such high-heat sources can be added to microwave ovens in the form of a convection microwave oven. [4]
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I can’t say, ‘Oh don’t go there, there’s a bomb there, and there’s a guy over there, make sure you watch him and don’t get shot.’ You are praying that the decision you make is the right one, and if it is the wrong one – which a couple of decisions were the wrong ones – you are paying the price and you are living with it.