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Microwave-oven-physics, the physics of microwave ovens year 12 physics information search presentation microwaves are an essential part of the modern kitchen due to their ability to quickly and easily heat food and drink. this page explains how they work, and explores some of the physical concepts involved in their operation.. The secret of the microwave is in, well, the microwaves. as the name suggests these devices use microwave radiation, with a frequency of about 2.4ghz and a wavelength of about 4 inches (10.16 cm)...., the device that converts electrical energy to microwaves – called the magnetron – sends microwaves into the oven cavity, where they bounce off the reflective inner surface. microwaves, like other....

This is the first of two articles about the physics of microwave ovens. this article deals with the generation of microwaves in the oven and includes the operation of the magnetrons, waveguides and standing waves in resonant cavities. it then considers the absorption of microwaves by foods, discussing the dielectric relaxation of water, penetration depths of electromagnetic waves in matter and ..., abstract this is the first of two articles about the physics of microwave ovens. this article deals with the generation of microwaves in the oven and includes the operation of the magnetrons, waveguides and standing waves in resonant cavities..

The microwave radiation of microwave ovens and some radar applications is produced by a device called a magnetron. modern microwave ovens operate at the frequency 2,450 mhz. by federal regulation, microwave ovens are limited to 5 milliwatts (mw) of microwave radiation per square centimeter at approximately 2 inches from the oven surface., a typical residential microwave oven converts a large electrical input (≈1,000w) into microwave energy and heats food using microwave radiation. the microwave oven uses a magnetron, a high-powered.... Microwave, electromagnetic radiation having a frequency within the range of 1 gigahertz to 1 terahertz (10 9 –10 12 cycles per second) and a wavelength between 1 mm and 1 m. read more on this topic. electromagnetic radiation: microwaves. the microwave region extends from 1,000 to 300,000 mhz (or 30 cm to 1 mm wavelength). although microwaves ..., while standing waves do form inside the cooking chamber of a microwave oven, it is a result of the the radiation being reflected from the inside surfaces of the cooking chamber, but not the reason that foods (and other materials) are heated.. a microwave oven heats food by passing microwave radiation (in the region 300 mhz to 300 ghz) through it. water, fat, and other substances in the food ....

The video and text below describes some of the characteristics and uses of radio waves and microwaves. radio waves are the lowest-energy, lowest-frequency and longest-wavelength electromagnetic waves. they are produced when an alternating current flows in an aerial and they spread out and travel through the atmosphere.


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