Vacuum - Revision history

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	[[Category:Physics]]		[[Category:Physics]]
	[[Category:Technology]]		[[Category:Technology]]
			<gallery>
			File:Kolbenluftpumpe hg.jpg\|Vacuum
			File:Baro 0.png\|Vacuum
			File:Crookes tube two views.jpg\|Vacuum
			File:Vacuum fluctuations revealed through spontaneous parametric down-conversion.ogv\|Vacuum
			File:Structure of the magnetosphere LanguageSwitch.svg\|Vacuum
			File:McLeod gauge 01.jpg\|Vacuum
			File:Gluehlampe 01 KMJ.jpg\|Vacuum
			File:L-Pumpe2.png\|Vacuum
			File:Hand pump.png\|Vacuum
			File:Cut through turbomolecular pump.jpg\|Vacuum
			File:An Experiment on a Bird in an Air Pump by Joseph Wright of Derby, 1768.jpg\|Vacuum
			</gallery>

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	File:An_Experiment_on_a_Bird_in_an_Air_Pump_by_Joseph_Wright_of_Derby,_1768.jpg\|Vacuum		File:An_Experiment_on_a_Bird_in_an_Air_Pump_by_Joseph_Wright_of_Derby,_1768.jpg\|Vacuum
	</gallery>		</gallery>
			==Vacuum==

			A '''vacuum''' is a space devoid of matter. The word stems from the Latin term "vacuus" for "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often discuss ideal vacuums, which are theoretical constructs that do not exist in reality, as even outer space is not a perfect vacuum.

			==Types of Vacuum==

			===Partial Vacuum===
			A '''partial vacuum''' is a region where the pressure is lower than the surrounding atmosphere. This is the most common type of vacuum encountered in everyday applications, such as in [[vacuum cleaner]]s and [[vacuum pump]]s.

			===Perfect Vacuum===
			A '''perfect vacuum''', also known as an absolute vacuum, is a theoretical state where no particles exist. In practice, it is impossible to achieve a perfect vacuum, but scientists can create environments with extremely low particle densities.

			===High Vacuum===
			'''High vacuum''' refers to a vacuum where the pressure is below 1 pascal. High vacuums are used in [[scientific research]] and [[industrial processes]], such as [[electron microscopy]] and [[vacuum coating]].

			===Ultra-High Vacuum===
			'''Ultra-high vacuum''' (UHV) is a vacuum regime characterized by pressures lower than 10^-7 pascal. UHV is essential in [[surface science]] and [[particle physics]] experiments.

			==Applications of Vacuum==

			===Industrial Applications===
			Vacuum technology is crucial in many industrial processes. For example, [[vacuum distillation]] is used in the [[petroleum industry]] to separate components of crude oil. [[Vacuum forming]] is a technique used in [[plastic manufacturing]].

			===Scientific Research===
			In [[scientific research]], vacuums are used to study [[physical phenomena]] without interference from air molecules. [[Particle accelerators]] and [[space simulation]] chambers rely on high and ultra-high vacuums.

			===Medical Applications===
			In the [[medical field]], vacuums are used in [[suction devices]] during [[surgery]] and in [[vacuum therapy]] for wound healing.

			==Vacuum in Space==
			Outer [[space]] is often considered a near-perfect vacuum, but it contains low-density particles, [[cosmic rays]], and [[radiation]]. The [[interstellar medium]] has a very low density, but it is not completely empty.

			==Related Pages==
			* [[Vacuum pump]]
			* [[Vacuum cleaner]]
			* [[Vacuum tube]]
			* [[Vacuum chamber]]
			* [[Vacuum distillation]]

			{{Physics}}
			{{Technology}}

			[[Category:Physics]]
			[[Category:Technology]]

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	[[Category:Vacuum]]		[[Category:Vacuum]]
			<gallery>
			File:Kolbenluftpumpe_hg.jpg\|Vacuum
			File:Baro_0.png\|Vacuum
			File:Crookes_tube_two_views.jpg\|Vacuum
			File:Vacuum_fluctuations_revealed_through_spontaneous_parametric_down-conversion.ogv\|Vacuum
			File:Structure_of_the_magnetosphere_LanguageSwitch.svg\|Vacuum
			File:McLeod_gauge_01.jpg\|Vacuum
			File:Gluehlampe_01_KMJ.jpg\|Vacuum
			File:L-Pumpe2.png\|Vacuum
			File:Hand_pump.png\|Vacuum
			File:Cut_through_turbomolecular_pump.jpg\|Vacuum
			File:An_Experiment_on_a_Bird_in_an_Air_Pump_by_Joseph_Wright_of_Derby,_1768.jpg\|Vacuum
			</gallery>

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← Older revision		Revision as of 00:44, 10 February 2025
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	~~'''~~Vacuum~~''' is~~ a ~~state of matter that is characterized by the absence of physical matter~~, ~~such as atoms, molecules, and ions. It is a concept that has been studied extensively in the fields of~~ [[~~Physics~~\|~~physics~~]], [[~~Chemistry~~\|~~chemistry~~]]~~, and~~ [[~~Engineering~~\|~~engineering~~]] ~~due to its unique properties and applications.~~		== Vacuum ==
			[[File:Kolbenluftpumpe_hg.jpg\|A historical vacuum pump\|thumb]]
			[[File:Baro_0.png\|Diagram of a barometer, an early vacuum device\|thumb\|left]]
			[[File:Crookes_tube_two_views.jpg\|A Crookes tube, an early experimental vacuum tube\|thumb]]
			[[File:Vacuum_fluctuations_revealed_through_spontaneous_parametric_down-conversion.ogv\|Video illustrating vacuum fluctuations\|thumb\|left]]
			[[File:Structure_of_the_magnetosphere_LanguageSwitch.svg\|Diagram of the magnetosphere, which is influenced by vacuum conditions in space\|thumb]]

	~~== Definition ==~~		A '''vacuum''' is a space devoid of matter. The word stems from the Latin adjective ''vacuus'' for "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they sometimes simply call "vacuum" or "free space", and use the term partial vacuum to refer to an actual imperfect vacuum as one might have in a laboratory or in space.
	A '''vacuum''' is ~~defined as~~ a space devoid of matter. ~~In practical terms, it refers~~ to a region with a gaseous pressure much less than atmospheric pressure. ~~The word~~ vacuum ~~comes from the Latin ''vacuus''~~, which ~~means~~ "~~empty~~"~~. However~~, ~~no perfect~~ vacuum ~~exists~~ in ~~the natural world, and even~~ in ~~man-made environments, a perfect vacuum is nearly impossible to achieve~~.

	== ~~Properties~~ ==		== History ==
	The properties of a vacuum are defined by the absence of particles. This absence of particles results in no [[Air Resistance\|air resistance]], which is why vacuums are often used in scientific experiments and industrial processes. In a vacuum, sound cannot propagate because there are no molecules to transmit the sound waves. This is why it is often said that "in space, no one can hear you scream".

	== ~~Creation~~ ==
	~~Creating a~~ vacuum ~~involves removing air from~~ a ~~sealed volume~~. This ~~is typically~~ achieved using a vacuum pump. In the ~~laboratory~~, ~~this can be~~ a ~~simple mechanical pump, but~~ in ~~industrial applications, more complex systems are often used~~.
			== Types of Vacuum ==

			=== Partial Vacuum ===
			A partial vacuum is a region where the gas pressure is lower than atmospheric pressure. This can be achieved using various methods, such as a [[vacuum pump]].

			=== High Vacuum ===
			High vacuum is a vacuum where the pressure is much lower than atmospheric pressure, typically below 1 mPa. High vacuum is used in [[electron microscopy]] and [[vacuum tubes]].

			=== Ultra-High Vacuum ===
			Ultra-high vacuum (UHV) is a vacuum regime characterized by pressures lower than about 100 nPa. UHV is used in [[surface science]] and [[particle accelerators]].

	== Applications ==		== Applications ==
	Vacuums have a wide range of applications. In science, they are used in experiments where air resistance might affect the results. In industry, they are used in processes such as vacuum forming, where a plastic sheet is heated and then shaped by a mold using a vacuum. In electronics, vacuums are used in devices such as vacuum tubes and cathode ray tubes.

	== ~~See Also~~ ==		Vacuum technology is essential in many fields. In [[electronics]], vacuum tubes were used in early computers and radios. In [[space exploration]], vacuum conditions are used to simulate the environment of outer space. In [[industrial processes]], vacuums are used in [[vacuum distillation]] and [[vacuum coating]].
	* [[~~Vacuum Pump~~]]
	* [[~~Vacuum Tube~~]]		== Vacuum Pumps ==
	* [[Vacuum ~~Forming~~]]
	* [[~~Physics~~]]		Vacuum pumps are devices that remove gas molecules from a sealed volume to create a vacuum. There are several types of vacuum pumps, including:
	* [[~~Chemistry~~]]
	* [[~~Engineering~~]]		* [[Rotary vane pump]]
			* [[Diaphragm pump]]
			* [[Turbomolecular pump]]

			== Related Pages ==

			* [[Vacuum tube]]
			* [[Vacuum pump]]
			* [[Vacuum chamber]]
			* [[Vacuum cleaner]]

			== Gallery ==

	~~[[Category~~:~~Physics]]~~		<gallery>
	~~[[Category~~:~~Chemistry]]~~		File:McLeod_gauge_01.jpg\|A McLeod gauge, used to measure vacuum pressure.
	~~[[Category~~:~~Engineering]]~~		File:Gluehlampe_01_KMJ.jpg\|An incandescent light bulb, which operates in a vacuum.
			File:L-Pumpe2.png\|Diagram of a vacuum pump.
			File:Hand_pump.png\|A hand-operated vacuum pump.
			File:Cut_through_turbomolecular_pump.jpg\|Cross-section of a turbomolecular pump.
			File:An_Experiment_on_a_Bird_in_an_Air_Pump_by_Joseph_Wright_of_Derby,_1768.jpg\|Painting depicting an experiment with a vacuum pump.
			</gallery>

	~~{{Physics-stub}}~~		[[Category:Vacuum]]
	~~{{Chemistry-stub}}~~
	~~{{Engineering-stub}}~~

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New page

'''Vacuum''' is a state of matter that is characterized by the absence of physical matter, such as atoms, molecules, and ions. It is a concept that has been studied extensively in the fields of [[Physics|physics]], [[Chemistry|chemistry]], and [[Engineering|engineering]] due to its unique properties and applications.

== Definition ==
A '''vacuum''' is defined as a space devoid of matter. In practical terms, it refers to a region with a gaseous pressure much less than atmospheric pressure. The word vacuum comes from the Latin ''vacuus'', which means "empty". However, no perfect vacuum exists in the natural world, and even in man-made environments, a perfect vacuum is nearly impossible to achieve.

== Properties ==
The properties of a vacuum are defined by the absence of particles. This absence of particles results in no [[Air Resistance|air resistance]], which is why vacuums are often used in scientific experiments and industrial processes. In a vacuum, sound cannot propagate because there are no molecules to transmit the sound waves. This is why it is often said that "in space, no one can hear you scream".

== Creation ==
Creating a vacuum involves removing air from a sealed volume. This is typically achieved using a vacuum pump. In the laboratory, this can be a simple mechanical pump, but in industrial applications, more complex systems are often used.

== Applications ==
Vacuums have a wide range of applications. In science, they are used in experiments where air resistance might affect the results. In industry, they are used in processes such as vacuum forming, where a plastic sheet is heated and then shaped by a mold using a vacuum. In electronics, vacuums are used in devices such as vacuum tubes and cathode ray tubes.

== See Also ==
* [[Vacuum Pump]]
* [[Vacuum Tube]]
* [[Vacuum Forming]]
* [[Physics]]
* [[Chemistry]]
* [[Engineering]]

[[Category:Physics]]
[[Category:Chemistry]]
[[Category:Engineering]]

{{Physics-stub}}
{{Chemistry-stub}}
{{Engineering-stub}}

← Older revision		Revision as of 01:31, 20 February 2025
Line 111:		Line 111:
	[[Category:Physics]]		[[Category:Physics]]
	[[Category:Technology]]		[[Category:Technology]]
			<gallery>
			File:Kolbenluftpumpe hg.jpg\|Vacuum
			File:Baro 0.png\|Vacuum
			File:Crookes tube two views.jpg\|Vacuum
			File:Vacuum fluctuations revealed through spontaneous parametric down-conversion.ogv\|Vacuum
			File:Structure of the magnetosphere LanguageSwitch.svg\|Vacuum
			File:McLeod gauge 01.jpg\|Vacuum
			File:Gluehlampe 01 KMJ.jpg\|Vacuum
			File:L-Pumpe2.png\|Vacuum
			File:Hand pump.png\|Vacuum
			File:Cut through turbomolecular pump.jpg\|Vacuum
			File:An Experiment on a Bird in an Air Pump by Joseph Wright of Derby, 1768.jpg\|Vacuum
			</gallery>

← Older revision		Revision as of 12:12, 18 February 2025
Line 54:		Line 54:

	[[Category:Vacuum]]		[[Category:Vacuum]]
			<gallery>
			File:Kolbenluftpumpe_hg.jpg\|Vacuum
			File:Baro_0.png\|Vacuum
			File:Crookes_tube_two_views.jpg\|Vacuum
			File:Vacuum_fluctuations_revealed_through_spontaneous_parametric_down-conversion.ogv\|Vacuum
			File:Structure_of_the_magnetosphere_LanguageSwitch.svg\|Vacuum
			File:McLeod_gauge_01.jpg\|Vacuum
			File:Gluehlampe_01_KMJ.jpg\|Vacuum
			File:L-Pumpe2.png\|Vacuum
			File:Hand_pump.png\|Vacuum
			File:Cut_through_turbomolecular_pump.jpg\|Vacuum
			File:An_Experiment_on_a_Bird_in_an_Air_Pump_by_Joseph_Wright_of_Derby,_1768.jpg\|Vacuum
			</gallery>