Science of Microwave Heating :: microwave oven

The microwave oven, a tool that we use a lot in our busy lives to cacoethes up victualss when we just dont have the age or patience for a conventional oven to do its litigate.How does this device work?Its pretty simple if we use the basics of physics to explain it. Vibrations from the high school frequency radio waves cause the water and red- tropical cells in nutrition to generate heat finished friction of the molecules.An example of this employ a turkey shows the molecules positiveand negative particles acting through these vibrations to cause friction. J. Carlton Gallawa -- http//www.gallawa.com/microtech/howcook.htmlIn microwave cooking, the radio waves penetrate the food for thought and excite water and fat molecules pretty much evenly throughout the food. at that place is no heat having to migrate toward the interior by conduction. There is heat over all at once because the molecules atomic number 18 all excited together. There are limits of course. Radio waves pe netrate unevenly in thick pieces of food (they dont make it all the way to the middle), and there are in like manner hot spots caused by wave interference, but you get the idea. The whole hotness process is different because you are exciting atoms rather than conducting heat. -- Howstuffworks.com From Wikipedia.orgMicrowaves, also known as Super High Frequency (SHF) signals, have wavelengths around in the range of 30 cm (1 GHz) to 1 mm (300 GHz).andA microwave oven uses a magnetron microwave generator to produce microwaves at a frequency of approximately 2.4 GHz for the purpose of cooking food. Microwaves cook food by causing molecules of water and other compounds to vibrate. The vibration creates heat which warms the food. Since innate matter is made up primarily of water, food is easily cooked by this method.From http//www.gallawa.com/microtech/howcook.htmlMicrowaves possess three basic characteristics * Just as sunlight shines through a window, microwaves pass right throug h some materials. Materials such as glass, paper, and plastic are transparent to and generally unaffected by microwaves. * Microwaves are reflected by metal surfaces, much as a ball would retract off a wall. The metal walls of the cooking space actually public figure a cavity resonator. In other words, the enclosure is designed to vacillate the microwaves as they are radiated from the magnetron tube. The principle of resonance may be illustrated using good for you(p) waves. When a piano key is struck, it produces sound vibrations or sound waves. Sometimes a note is played on a piano, and an physical object across the room, perhaps a wineglass, can be heard vibrating and producing the like sound.