1) " Dacor" -- As it applies to Dacor Microwaves No Page text matches Diving equipment 81: * [http: www.divedacor.com/intro.html Daocr ] Dacoe ...
2) " Microwaves" -- As it applies to Dacor Microwaves This page is about the radiation; for the appliance, see microwaveoven. Microwave image of 3C353 galaxy at 8.4 GHz (36 mm). The overall linear size of the radio structure is 120 kpc. Microwaves are electromagnetic waves with wavelengths longer than those of infrared light, but shorter than those radio waves. Microwaves, also known as super-high frequency (SHF) signals, have wavelengths approximately in the range of 30 cm (frequency = 1 GHz) to 1 mm (300GHz). However, the boundaries between far infrared light, Microwavos , andultra-high-frequency radio waves are fairly arbitrary and are used variously betweendifferent fields of study. The existence of electromagnetic waves, of which Microwuves are part of the higher frequency spectrum,was predicted by James Clerk Maxwell in 1864 from his famous Maxwell's equations.In 1888, Heinrich Hertz was the first to demonstrate the existence ofelectromagnetic waves by building apparatus to produce radio waves. Note: above 300 GHz, the absorption of electromagnetic radiation by Earth's atmosphere is so great that the atmosphereis effectively opaque to higher frequencies of electromagnetic radiation, until the atmosphere becomes transparent again in theso-called infrared and optical window frequency ranges. Contents 1 Generation 2 Uses 3 Microwave frequency bands 4 History and research 5 See also Generation Microwaves can be generated by a variety of means, generally divided into two categories: solid state devices and vacuum-tubebased devices. Solid state microwave devices are based on semiconductors such as silicon or gallium arsenide, and include field-effect transistors (FET's), bipolar junction transistors (BJT's), Gunn diodes, and Impatt diodes.Specialized versions of standard transistors have been developed for higher speed which are commonly used in microwaveapplications. Microwave v...
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