Kelvin - Revision history

Jmdonev: 1 revision imported

2021-09-27T00:02:42Z

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energy>Luisa at 10:27, 20 August 2021

2021-08-20T10:27:01Z

← Older revision		Revision as of 10:27, 20 August 2021
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	[[category:units]] [[Category:~~Done 2018-06-15~~]]		[[Category:Done 2021-01-31]]
			[[Category:Translated to French]]
			[[fr:Kelvin]]
			[[category:units]]
			[[Category:Translated to Spanish]]
			[[es:Kelvin]]
	<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <math>K</math>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important [[quantum mechanics]]). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).		<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <math>K</math>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important [[quantum mechanics]]). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).

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	Temperature is a measure of the [[kinetic energy]] of molecules in a system, and using Kelvin units are essential to explaining this concept clearly. Temperature can be related to energy through a value known as the [[Boltzmann's constant\|Boltzmann constant]]. This constant is derived from the ideal gas law, given by the equation <math>KE_{avg}=\frac{3}{2}k_b T</math> where <math>k_b </math> is the Boltzmann constant, <math>1.38064\times10^{-23}</math> [[joule\|J]]/K.		Temperature is a measure of the [[kinetic energy]] of molecules in a system, and using Kelvin units are essential to explaining this concept clearly. Temperature can be related to energy through a value known as the [[Boltzmann's constant\|Boltzmann constant]]. This constant is derived from the ideal gas law, given by the equation <math>KE_{avg}=\frac{3}{2}k_b T</math> where <math>k_b </math> is the Boltzmann constant, <math>1.38064\times10^{-23}</math> [[joule\|J]]/K.


			Many calculations with temperature require using an absolute scale like the Kelvin scale. For example if a temperature of 27°C is doubled, it needs to be expressed as an absolute value. In other words, you cannot just multiply 27°C by 2. The correct calculation is shown below:

			<center><math> 2 \times (27°C + 273) = 2 \times (300 K) = 600 K = 327°C </math></center>


			Likewise, if there's a 1% increase in a temperature of 27°C, we need to convert to Kelvin first. The calculation below shows that the increase in temperature is '''not''' 0.27°C, but that it's actually a 3°C warming to 30°C:

			<center><math> 1.01\times (27°C + 273) = 1.01 \times (300 K) = 303 K = 30°C </math></center>


	==Conversions==		==Conversions==
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	*[[Zeroth law of thermodynamics]]		*[[Zeroth law of thermodynamics]]
	*Or explore a [[Special:Random\|random page]]		*Or explore a [[Special:Random\|random page]]
	To read more about Kelvin, please look at [http://www.unc.edu/~rowlett/units/dictK.html#kelvin ~~hyperphysics~~] or [http://chemwiki.ucdavis.edu/Analytical_Chemistry/Temperature_Basics UC Davis's Chemistry wiki].		To read more about Kelvin, please look at Dr. Rowlett's [http://www.unc.edu/~rowlett/units/dictK.html#kelvin unit dictionary] or [http://chemwiki.ucdavis.edu/Analytical_Chemistry/Temperature_Basics UC Davis's Chemistry wiki].

	==References==		==References==
	{{reflist}}		{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev: 1 revision imported

2018-06-25T14:30:35Z

1 revision imported

← Older revision	Revision as of 14:30, 25 June 2018
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Jmdonev at 19:45, 24 June 2018

2018-06-24T19:45:27Z

← Older revision		Revision as of 19:45, 24 June 2018
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	[[category:units]] [[Category:Done 2018-04-30]]		[[category:units]] [[Category:Done 2018-06-15]]
	<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <math>K</math>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important [[quantum mechanics]]). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).		<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <math>K</math>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important [[quantum mechanics]]). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).

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	==Conversions==		==Conversions==
	<html><br /> <iframe src="~~http~~://energyeducation.ca/simulations/converter/converter.php?defaultMeasure=Temperature&defaultFrom=kelvin&defaultTo=Celsius" width="750" height="200" scrolling="no"> </iframe><br /> </html>		<html><br /> <iframe src="https://energyeducation.ca/simulations/converter/converter.php?defaultMeasure=Temperature&defaultFrom=kelvin&defaultTo=Celsius" width="750" height="200" scrolling="no"> </iframe><br /> </html>

			==For Further Reading==
			*[[Energy]]
			*[[Temperature]]
			*[[Superconductor]]
			*[[Zeroth law of thermodynamics]]
			*Or explore a [[Special:Random\|random page]]
	To read more about Kelvin, please look at [http://www.unc.edu/~rowlett/units/dictK.html#kelvin hyperphysics] or [http://chemwiki.ucdavis.edu/Analytical_Chemistry/Temperature_Basics UC Davis's Chemistry wiki].		To read more about Kelvin, please look at [http://www.unc.edu/~rowlett/units/dictK.html#kelvin hyperphysics] or [http://chemwiki.ucdavis.edu/Analytical_Chemistry/Temperature_Basics UC Davis's Chemistry wiki].

Jmdonev: 1 revision imported

2018-05-11T18:17:01Z

1 revision imported

← Older revision	Revision as of 18:17, 11 May 2018
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Jmdonev at 23:09, 15 April 2018

2018-04-15T23:09:21Z

← Older revision		Revision as of 23:09, 15 April 2018
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	[[category:units]] [[Category:Done ~~2017~~-12-31]]		[[category:units]] [[Category:Done 2018-04-30]]
	<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <math>K</math>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important [[quantum mechanics]]). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).		<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <math>K</math>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important [[quantum mechanics]]). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).

	Kelvin is usually avoided for everyday use, instead it is always used for temperatures in physics (and also often in chemistry), in equations such as the [[ideal gas law]]. If a [[gas]] had a temperature of -52.15°C (220 K) the negative number would make no sense in the ideal gas law.		Kelvin is usually avoided for everyday use, instead it is always used for temperatures in physics (and also often in chemistry), in equations such as the [[ideal gas law]]. If a [[gas]] had a temperature of -52.15°C (220 K) the negative number would make no sense in the ideal gas law.

	Temperature is a measure of the [[kinetic energy]] of molecules in a system, and using Kelvin units are essential to explaining this concept clearly. Temperature can be related to energy through a value known as the [[Boltzmann's constant\|Boltzmann constant]]. This constant is derived from the ideal gas law, given by the equation <math>KE_{avg}=\frac{3}{2}k_b T</math> where k is the Boltzmann constant, <math>1.38064\times10^{-23}</math> [[~~joules~~\|J]]/K.		Temperature is a measure of the [[kinetic energy]] of molecules in a system, and using Kelvin units are essential to explaining this concept clearly. Temperature can be related to energy through a value known as the [[Boltzmann's constant\|Boltzmann constant]]. This constant is derived from the ideal gas law, given by the equation <math>KE_{avg}=\frac{3}{2}k_b T</math> where <math>k_b </math> is the Boltzmann constant, <math>1.38064\times10^{-23}</math> [[joule\|J]]/K.

	==Conversions==		==Conversions==

Jmdonev: 1 revision imported

2018-04-14T21:17:36Z

1 revision imported

← Older revision	Revision as of 21:17, 14 April 2018
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Jmdonev at 04:06, 12 January 2018

2018-01-12T04:06:26Z

← Older revision		Revision as of 04:06, 12 January 2018
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	[[category:units]] [[Category:Done ~~2015~~-09-06]]		[[category:units]] [[Category:Done 2017-12-31]]
	<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <m>K</m>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important [[quantum mechanics]]). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).		<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <math>K</math>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important [[quantum mechanics]]). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).

	Kelvin is usually avoided for everyday use, instead it is always used for temperatures in physics (and also often in chemistry), in equations such as the [[ideal gas law]]. If a [[gas]] had a temperature of -52.15°C (220 K) the negative number would make no sense in the ideal gas law.		Kelvin is usually avoided for everyday use, instead it is always used for temperatures in physics (and also often in chemistry), in equations such as the [[ideal gas law]]. If a [[gas]] had a temperature of -52.15°C (220 K) the negative number would make no sense in the ideal gas law.

	Temperature is a measure of the [[kinetic energy]] of molecules in a system, and using Kelvin units are essential to explaining this concept clearly. Temperature can be related to energy through a value known as the [[Boltzmann's constant\|Boltzmann constant]]. This constant is derived from the ideal gas law, given by the equation <m>~~KE_a_v_g~~=3~~/2k_bT~~</m> where k is the Boltzmann constant, <m>1.38064\times10^{-23}</m> [[joules\|J]]/K.		Temperature is a measure of the [[kinetic energy]] of molecules in a system, and using Kelvin units are essential to explaining this concept clearly. Temperature can be related to energy through a value known as the [[Boltzmann's constant\|Boltzmann constant]]. This constant is derived from the ideal gas law, given by the equation <math>KE_{avg}=\frac{3}{2}k_b T</math> where k is the Boltzmann constant, <math>1.38064\times10^{-23}</math> [[joules\|J]]/K.

	==Conversions==		==Conversions==
	<html><br /> <iframe src="http://energyeducation.ca/simulations/converter/converter.php?defaultMeasure=Temperature&defaultFrom=kelvin&defaultTo=~~celcius~~" width="750" height="200" scrolling="no"> </iframe><br /> </html>		<html><br /> <iframe src="http://energyeducation.ca/simulations/converter/converter.php?defaultMeasure=Temperature&defaultFrom=kelvin&defaultTo=Celsius" width="750" height="200" scrolling="no"> </iframe><br /> </html>

	To read more about Kelvin, please look at [http://www.unc.edu/~rowlett/units/dictK.html#kelvin hyperphysics] or [http://chemwiki.ucdavis.edu/Analytical_Chemistry/Temperature_Basics UC Davis's Chemistry wiki].		To read more about Kelvin, please look at [http://www.unc.edu/~rowlett/units/dictK.html#kelvin hyperphysics] or [http://chemwiki.ucdavis.edu/Analytical_Chemistry/Temperature_Basics UC Davis's Chemistry wiki].

J.williams: 1 revision imported

2015-09-18T16:52:00Z

1 revision imported

← Older revision	Revision as of 16:52, 18 September 2015
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Jmdonev at 21:48, 4 September 2015

2015-09-04T21:48:47Z

← Older revision		Revision as of 21:48, 4 September 2015
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	[[category:units]] [[Category:Done 2015-09-05]]		[[category:units]] [[Category:Done 2015-09-06]]
	<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <m>K</m>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important quantum mechanics). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).		<onlyinclude>'''Kelvin''' is the [[SI]] base [[units\|unit]] of [[temperature]].<ref>Russ Rowlett. (2002). ''A Dictionary of Units of Measurement - Kelvin'' [Online]. Available: http://www.unc.edu/~rowlett/units/dictK.html#kelvin [February 27, 2015] </ref> It is given the symbol <m>K</m>.</onlyinclude> Since temperature measures the [[energy]] of atoms and molecules, a true temperature scale must be a positive scale since atoms cannot have a negative energy. On the Kelvin scale, 0 Kelvin is the temperature of [[absolute zero]]. Absolute zero is the temperature in a system where all particles stop moving (ignoring some important [[quantum mechanics]]). A degree Kelvin and a degree [[Celsius]] are the same ''unit'', as they have the same "spacing" between each degree, but the scales have different zero points (see converter below).

	Kelvin is usually avoided for everyday use, instead it is always used for temperatures in physics (and also often in chemistry), in equations such as the [[ideal gas law]]. If a gas had a temperature of -52.15°C (220 K) the negative number would make no sense in the ideal gas law.		Kelvin is usually avoided for everyday use, instead it is always used for temperatures in physics (and also often in chemistry), in equations such as the [[ideal gas law]]. If a [[gas]] had a temperature of -52.15°C (220 K) the negative number would make no sense in the ideal gas law.

	Temperature is a measure of the kinetic energy of molecules in a system, and using Kelvin units are essential to explaining this concept clearly. Temperature can be related to energy through a value known as the [[Boltzmann's constant\|Boltzmann constant]]. This constant is derived from the ideal gas law, given by the equation <m>KE_a_v_g=3/2k_bT</m> where k is the Boltzmann constant, <m>1.38064\times10^{-23}</m> [[joules\|J]]/K.		Temperature is a measure of the [[kinetic energy]] of molecules in a system, and using Kelvin units are essential to explaining this concept clearly. Temperature can be related to energy through a value known as the [[Boltzmann's constant\|Boltzmann constant]]. This constant is derived from the ideal gas law, given by the equation <m>KE_a_v_g=3/2k_bT</m> where k is the Boltzmann constant, <m>1.38064\times10^{-23}</m> [[joules\|J]]/K.

	==Conversions==		==Conversions==