First Law of Thermodynamics - Revision history

Conservative at 01:42, July 6, 2025

2025-07-06T01:42:44Z

Conservative at 04:37, February 10, 2025

2025-02-10T04:37:32Z

Conservative at 04:37, February 10, 2025

2025-02-10T04:37:05Z

Karajou: Protected "First Law of Thermodynamics": Edit warring ([Edit=Administrators only] (indefinite) [Move=Administrators only] (indefinite))

2016-11-20T18:37:02Z

Protected "First Law of Thermodynamics": Edit warring ([Edit=Administrators only] (indefinite) [Move=Administrators only] (indefinite))

Karajou: Reverted edits by PeterIceHockey (talk) to last revision by Richardm

2016-11-19T14:42:24Z

Reverted edits by PeterIceHockey (talk) to last revision by Richardm

PeterIceHockey: Added

2016-11-19T14:18:16Z

Added

PeterIceHockey: change exact differentials to inexact

2016-11-19T14:15:34Z

change exact differentials to inexact

: Tidy up

2016-09-19T18:14:41Z

Tidy up

at 12:58, September 9, 2016

2016-09-09T12:58:52Z

at 12:57, September 9, 2016

2016-09-09T12:57:50Z

← Older revision		Revision as of 01:42, July 6, 2025
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−	[[File:4335281098 237ce959bd.jpg\|thumbnail\|right\|350px\|The First Law of Thermodynamics and the [[second law of thermodynamics]] point to a divine origin of the universe.<ref>[https://web.archive.org/web/20160318060455/https://www.creationencounter.com/space/lawsofscience.php Scientific laws and the Origin of the Universe]~~</ref><ref>[https://www.apologeticspress.org/apcontent.aspx?category=12&article=310 So Long, Eternal Universe; Hello Beginning, Hello End!], 2001 (Apologetics Press)~~</ref><ref>[https://creation.com/if-god-created-the-universe-then-who-created-god If God created the universe, then who created God?] by [[Jonathan Sarfati]]</ref>]]	+	[[File:4335281098 237ce959bd.jpg\|thumbnail\|right\|350px\|The First Law of Thermodynamics and the [[second law of thermodynamics]] point to a divine origin of the universe.<ref>[https://web.archive.org/web/20160318060455/https://www.creationencounter.com/space/lawsofscience.php Scientific laws and the Origin of the Universe]</ref><ref>[https://creation.com/if-god-created-the-universe-then-who-created-god If God created the universe, then who created God?] by [[Jonathan Sarfati]]</ref>]]
	The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added minus the work performed by the system.		The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added minus the work performed by the system.

← Older revision		Revision as of 04:37, February 10, 2025
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−	[[File:4335281098 237ce959bd.jpg\|thumbnail\|right\|350px\|The [[First Law of Thermodynamics~~\|first law of thermodynamics]]~~ and the [[second law of thermodynamics]] point to a divine origin of the universe.<ref>[https://web.archive.org/web/20160318060455/https://www.creationencounter.com/space/lawsofscience.php Scientific laws and the Origin of the Universe]</ref><ref>[https://www.apologeticspress.org/apcontent.aspx?category=12&article=310 So Long, Eternal Universe; Hello Beginning, Hello End!], 2001 (Apologetics Press)</ref><ref>[https://creation.com/if-god-created-the-universe-then-who-created-god If God created the universe, then who created God?] by [[Jonathan Sarfati]]</ref>]]	+	[[File:4335281098 237ce959bd.jpg\|thumbnail\|right\|350px\|The First Law of Thermodynamics and the [[second law of thermodynamics]] point to a divine origin of the universe.<ref>[https://web.archive.org/web/20160318060455/https://www.creationencounter.com/space/lawsofscience.php Scientific laws and the Origin of the Universe]</ref><ref>[https://www.apologeticspress.org/apcontent.aspx?category=12&article=310 So Long, Eternal Universe; Hello Beginning, Hello End!], 2001 (Apologetics Press)</ref><ref>[https://creation.com/if-god-created-the-universe-then-who-created-god If God created the universe, then who created God?] by [[Jonathan Sarfati]]</ref>]]
	The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added minus the work performed by the system.		The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added minus the work performed by the system.

← Older revision		Revision as of 04:37, February 10, 2025
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		+	[[File:4335281098 237ce959bd.jpg\|thumbnail\|right\|350px\|The [[First Law of Thermodynamics\|first law of thermodynamics]] and the [[second law of thermodynamics]] point to a divine origin of the universe.<ref>[https://web.archive.org/web/20160318060455/https://www.creationencounter.com/space/lawsofscience.php Scientific laws and the Origin of the Universe]</ref><ref>[https://www.apologeticspress.org/apcontent.aspx?category=12&article=310 So Long, Eternal Universe; Hello Beginning, Hello End!], 2001 (Apologetics Press)</ref><ref>[https://creation.com/if-god-created-the-universe-then-who-created-god If God created the universe, then who created God?] by [[Jonathan Sarfati]]</ref>]]
	The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added minus the work performed by the system.		The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added minus the work performed by the system.

@@ Line 1: / Line 1: @@
-The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added plus the work performed on the system.
+The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added minus the work performed by the system.
 Mathematically, this is described as follows:
-:<math>\,dU = \delta Q + \delta W\,</math>
+:<math>dU=dQ-dW\,</math>
 where
-:<math>\,dU</math> is the infinitesimal increase in the internal [[energy]]
+:<math>dU</math> is the infinitesimal increase in the internal [[energy]]
-:<math>\delta Q</math> is the infinitesimal amount of [[heat]] added to the system
+:<math>dQ</math> is the infinitesimal amount of [[heat]] added to the system
-:<math>\delta W</math> is the infinitesimal amount of work performed on the system
+:<math>dW</math> is the infinitesimal amount of work performed done by the system
 A ramification of this is the [[Conservation of Energy|Principle of conservation of energy]];<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref><ref>“This law is considered the most powerful and most fundamental generalization about the universe that scientists have ever been able to make.  No one knows why energy is conserved... All that anyone can say is that in over a century and a quarter of careful measurement scientists have never been able to point to a definite violation of energy conservation, either in the familiar everyday surroundings about us, or in the heavens above or in the atoms within.” Isaac Asimov, Smithsonian Institution Journal, 1970, p.6 [http://www.trueorigin.org/steiger.asp (quoted)]</ref> the amount of energy in the [[closed system]] of the universe remains constant. This can be combined with the principle of [[e=mc^2|Mass-Energy Equivalence]] to demonstrate that the amount of mass in the [[universe]] is constant.
@@ Line 36: / Line 37: @@
 For more information, please see: [[Atheism and the origin of the universe#Theistic implications of the 1st and 2nd laws of thermodynamics|Theistic implications of the 1st and 2nd laws of thermodynamics]]
 ==References==

@@ Line 1: / Line 1: @@
-The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added minus the work performed by the system.
+The '''First Law of Thermodynamics''' states that the increase in internal energy of a closed system equals the amount of heat energy added plus the work performed on the system.
 Mathematically, this is described as follows:
@@ Line 36: / Line 36: @@
 For more information, please see: [[Atheism and the origin of the universe#Theistic implications of the 1st and 2nd laws of thermodynamics|Theistic implications of the 1st and 2nd laws of thermodynamics]]
 ==References==

← Older revision	Revision as of 18:37, November 20, 2016
(No difference)

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 Mathematically, this is described as follows:
-:<math>\mathrm{d}U=\delta Q-\delta W\,</math>
+:<math>dU=dQ-dW\,</math>
 A ramification of this is the [[Conservation of Energy|Principle of conservation of energy]];<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref><ref>“This law is considered the most powerful and most fundamental generalization about the universe that scientists have ever been able to make.  No one knows why energy is conserved... All that anyone can say is that in over a century and a quarter of careful measurement scientists have never been able to point to a definite violation of energy conservation, either in the familiar everyday surroundings about us, or in the heavens above or in the atoms within.” Isaac Asimov, Smithsonian Institution Journal, 1970, p.6 [http://www.trueorigin.org/steiger.asp (quoted)]</ref> the amount of energy in the [[closed system]] of the universe remains constant. This can be combined with the principle of [[e=mc^2|Mass-Energy Equivalence]] to demonstrate that the amount of mass in the [[universe]] is constant.
-Note that if no energy is added, then the maximum amount of [[work]] that can be performed by the system is equal to its initial energy.  This prevents the existence of a type of [[perpetual motion machine]].
+Note that if no [[heat]] is added, then the maximum amount of [[work]] that can be performed by the system is equal to its internal energy. This prevents the existence of a type of [[perpetual motion machine]]. More generally, if no [[energy]] is added to a system, the maximum amount of [[work]] the system can perform is equal to its initial energy. This may be in several forms, such as [[kinetic energy]] or [[potential energy]].
 == The 1st and 2nd law of thermodynamics and the universe having a beginning ==

@@ Line 7: / Line 7: @@
 where <math>\mathrm{d}U</math> is the infinitesimal increase in the internal [[energy]], <math>\delta Q</math> is the infinitesimal amount of [[heat]] added, and <math>\delta W</math> is the infinitesimal amount of work performed.
-A ramification of this is the [[Conservation of energy|Principle of conservation of energy]];<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref><ref>“This law is considered the most powerful and most fundamental generalization about the universe that scientists have ever been able to make.  No one knows why energy is conserved... All that anyone can say is that in over a century and a quarter of careful measurement scientists have never been able to point to a definite violation of energy conservation, either in the familiar everyday surroundings about us, or in the heavens above or in the atoms within.” Isaac Asimov, Smithsonian Institution Journal, 1970, p.6 [http://www.trueorigin.org/steiger.asp (quoted)]</ref> the amount of energy in the [[closed system]] of the universe remains constant. This can be combined with the principle of [[e=mc^2|Mass-Energy Equivalence]] to demonstrate that the amount of mass in the [[universe]] is constant.
+A ramification of this is the [[Conservation of Energy|Principle of conservation of energy]];<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref><ref>“This law is considered the most powerful and most fundamental generalization about the universe that scientists have ever been able to make.  No one knows why energy is conserved... All that anyone can say is that in over a century and a quarter of careful measurement scientists have never been able to point to a definite violation of energy conservation, either in the familiar everyday surroundings about us, or in the heavens above or in the atoms within.” Isaac Asimov, Smithsonian Institution Journal, 1970, p.6 [http://www.trueorigin.org/steiger.asp (quoted)]</ref> the amount of energy in the [[closed system]] of the universe remains constant. This can be combined with the principle of [[e=mc^2|Mass-Energy Equivalence]] to demonstrate that the amount of mass in the [[universe]] is constant.
 Note that if no energy is added, then the maximum amount of [[work]] that can be performed by the system is equal to its initial energy.  This prevents the existence of a type of [[perpetual motion machine]].