Microwave - Revision history

Prab at 06:16, 2 March 2025

2025-03-02T06:16:40Z

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 '''Microwave''' is a form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter; with frequencies between 300 MHz (1 m) and 300 GHz (1 mm). Different sources define different frequency ranges as microwaves; the above broad definition includes both UHF and EHF (millimeter wave) bands. A more common definition in radio-frequency engineering is the range between 1 and 100 GHz (wavelengths between 0.3 m and 3 mm). In all cases, microwaves include the entire SHF band (3 to 30 GHz, or 10 to 1 cm) at minimum. Frequencies in the microwave range are often referred to by their IEEE radar band designations: S, C, X, Ku, K, or Ka band, or by similar NATO or EU designations.
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 Exposure to microwaves can have harmful effects on human health. These include burns, cataracts, and some temporary sterility. However, these effects are usually caused by exposure to high levels of microwaves, and the levels found in typical household appliances are generally considered safe.
 == See also ==
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 * [[Radio waves]]
 * [[Infrared]]
 [[Category:Electromagnetic radiation]]
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Prab: CSV import

2025-02-23T21:02:05Z

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← Older revision		Revision as of 21:02, 23 February 2025
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	{{stub}}		{{stub}}
			== Microwave ==
			<gallery>
			File:Frazier_Peak,_tower_and_Honda_Element.jpg\|Frazier Peak, tower and Honda Element
			File:Atmospheric_Microwave_Transmittance_at_Mauna_Kea_(simulated).svg\|Atmospheric Microwave Transmittance at Mauna Kea (simulated)
			File:Diplexer1.jpg\|Diplexer
			File:Magnetron_section_transverse_to_axis.JPG\|Magnetron section transverse to axis
			File:Antennenw1.jpg\|Antennen
			File:Radar_speed_gun_internal_works.jpg\|Radar speed gun internal works
			File:SuperDISH121.jpg\|SuperDISH121
			File:ASR-9_Radar_Antenna.jpg\|ASR-9 Radar Antenna
			File:The_Atacama_Compact_Array.jpg\|The Atacama Compact Array
			File:BigBangNoise.jpg\|Big Bang Noise
			File:Electrodomésticos_de_línea_blanca_18.JPG\|Electrodomésticos de línea blanca
			File:Microwave_tunnel_closeup.jpg\|Microwave tunnel closeup
			</gallery>

Prab: CSV import

2024-02-24T17:15:56Z

CSV import

New page

'''Microwave''' is a form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter; with frequencies between 300 MHz (1 m) and 300 GHz (1 mm). Different sources define different frequency ranges as microwaves; the above broad definition includes both UHF and EHF (millimeter wave) bands. A more common definition in radio-frequency engineering is the range between 1 and 100 GHz (wavelengths between 0.3 m and 3 mm). In all cases, microwaves include the entire SHF band (3 to 30 GHz, or 10 to 1 cm) at minimum. Frequencies in the microwave range are often referred to by their IEEE radar band designations: S, C, X, Ku, K, or Ka band, or by similar NATO or EU designations.

== History ==

The discovery of microwaves can be traced back to the 19th century when James Clerk Maxwell presented his theory of electromagnetic radiation in 1864. However, it was not until the 1940s that the technology was developed for practical use, primarily for radar systems during World War II.

== Applications ==

Microwaves have a wide range of applications including communication, radar, and heating. In communication, they are used in television and radio broadcasting, cell phones, and satellite communication. In radar, they are used to detect objects and measure their distance, speed, and other characteristics. In heating, they are most commonly used in microwave ovens to heat food.

== Health effects ==

Exposure to microwaves can have harmful effects on human health. These include burns, cataracts, and some temporary sterility. However, these effects are usually caused by exposure to high levels of microwaves, and the levels found in typical household appliances are generally considered safe.

== See also ==
* [[Electromagnetic spectrum]]
* [[Radio waves]]
* [[Infrared]]

== References ==
<references />

[[Category:Electromagnetic radiation]]
[[Category:Radio technology]]
[[Category:Wireless]]

{{stub}}

← Older revision		Revision as of 21:02, 23 February 2025
Line 26:		Line 26:

	{{stub}}		{{stub}}
			== Microwave ==
			<gallery>
			File:Frazier_Peak,_tower_and_Honda_Element.jpg\|Frazier Peak, tower and Honda Element
			File:Atmospheric_Microwave_Transmittance_at_Mauna_Kea_(simulated).svg\|Atmospheric Microwave Transmittance at Mauna Kea (simulated)
			File:Diplexer1.jpg\|Diplexer
			File:Magnetron_section_transverse_to_axis.JPG\|Magnetron section transverse to axis
			File:Antennenw1.jpg\|Antennen
			File:Radar_speed_gun_internal_works.jpg\|Radar speed gun internal works
			File:SuperDISH121.jpg\|SuperDISH121
			File:ASR-9_Radar_Antenna.jpg\|ASR-9 Radar Antenna
			File:The_Atacama_Compact_Array.jpg\|The Atacama Compact Array
			File:BigBangNoise.jpg\|Big Bang Noise
			File:Electrodomésticos_de_línea_blanca_18.JPG\|Electrodomésticos de línea blanca
			File:Microwave_tunnel_closeup.jpg\|Microwave tunnel closeup
			</gallery>