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A microwave oven, c. 2005 Simulation of the electric field inside a microwave oven for the first 8 ns of operation. A microwave oven heats food by passing microwave radiation through it. Microwaves are a form of non-ionizing electromagnetic radiation with a frequency in the so-called microwave region (300 MHz to 300 GHz).
Small appliances in a kitchen: a food processor, a waffle iron, a coffee maker, and an electric kettle Glowing filaments of a modern 2-slice toaster. A small domestic appliance, also known as a small electric appliance or minor appliance or simply a small appliance, small domestic or small electric, [1] is a portable or semi-portable machine, generally used on table-tops, counter-tops or other ...
Where is the measured power in on mode in Watts in the normal configuration, and is a correction factor used for digital signage. For example, a television with a diagonal length of 82 cm has a screen area of A = 28.7 dm 2 and a reference power consumption of 38W. The energy classes are as in the table below.
Microwave is a form of electromagnetic radiation with wavelengths shorter than other radio waves but longer than infrared waves. Its wavelength ranges from about one meter to one millimeter, corresponding to frequencies between 300 MHz and 300 GHz, broadly construed.
Microwaves are the main wavelengths used in radar, and are used for satellite communication, and wireless networking technologies such as Wi-Fi. The copper cables ( transmission lines ) which are used to carry lower-frequency radio waves to antennas have excessive power losses at microwave frequencies, and metal pipes called waveguides are used ...
Physical length of conventional cavity filters can vary from over 205 cm in the 40 MHz range, down to under 27.5 cm in the 900 MHz range. In the microwave range (1000 MHz and up), cavity filters become more practical in terms of size and a significantly higher quality factor than lumped element resonators and filters.
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