There are also various ways to state the zeroth law of thermodynamics. If you have any doubts, you can ask us and we will reply you as soon as possible. B. Thermodynamics is summarized by its Four laws, which are established upon a large number of empirical observations. Thermodynamics Laws in Pdf Notes Zeroth Law Second Law 3rd Law Thermodynamics : Science which deals with study of different forms of energy and quantitative relationship. 3. SM�eʑ������O �c�Ԝ)L�K1��pa��G\��h�m'���!��� The zeroth law of thermodynamics states that if two thermodynamic systems are each in thermal equilibrium with a third one, then they are in thermal equilibrium with each other. B. Zeroth Law of Thermodynamics (VW, S & B: 2.9-2.10) 1. H��ks�ȱ�ɫ�Z���+6l(.����\R�U��R��ӏ��h��I�l��{z��������v#7W���z�T�i���1�n��������ً?���͞H������_�.7�ܟ5����߳Jm��}6����=ꦩM���W���|zs����/����w��f�����~���������珿��ʶ������7��?�� Zeroth Law The zeroth law of thermodynamics will be our starting point. 2.3: Mathematical Interlude - Exact and Inexact Differentials; Recommended articles. Get more info on thermodynamics, by reviewing the lesson on The Zeroth Law of Thermodynamics. The zeroth law was not initially recognized as a separate law of thermodynamics, as its basis in thermodynamical equilibrium was implied in the other laws. Thermodynamics is summarized by its Four laws, which are established upon a large number of empirical observations. We start here with a consideration of general thermodynamic laws that govern all possible processes in the universe. Back to top; 2.1: What is Thermodynamics? Systems are in thermal equilibrium if they do not transfer heat, even though they are in a position to do so, based on other factors. �2�qd��.�;c�ZU�9X�s��L��l-��iD@��{����L�2� o�����݊��p�ҋ���w�gi�"KRҸ��d�6W�&�+ٓ�N�]�Uq��]���1����n�400���kG��5݈��e,J�'�-���:!��ʀLҘQӅ��W�@��K�pҮ/�d It can only change forms. ��N����_����a[>�&�)Z��$�Bw��M37ITM?������I�'��M��xI�2��휙x���u��9k�a�I��X�@�2��&���o�c_���O�����.��jA�`��Ox�C��`A��ϻ��}�������R��hU��%!� �ҵ�҆/���~����O����Z-v{���4rN.ouh�Q��T���}4�H$�"�5�e/Փ�U8�C�j@� =�����/&E� +���b��i�۞-j�ի�ND�oK�rV���$���x�X� QH�aN}�GT[k��!#Bj��遥-Z8�"��*�nny`h�5��G;�!y�*1b�+gR��@o�&�N9�ḯ� >g�`�{. Zeroth law of thermodynamics: If two systems are each in thermal equilibrium with a third, they are also in thermal equilibrium with each other. Zeroth law: you CANNOT ignore the temperature of your heat engine. Then the zeroth law of thermodynamics requires p’p” to be an equilibrium state for the composite system S’ + S”, so that, with a minor modification of the usual formulation, pp’p” is an equilib- rium state for S + S’ + S” (i.e., is stable under small perturbations of H + H’ + H”); this modified formulation is as physically cogent as the usual one. Interestingly, the zeroth law of thermodynamics was actually developed much later than the original three laws. 0th Law of Thermodynamics Last updated; Save as PDF Page ID 1919; Introduction; References; The Zeroth Law of Thermodynamics states that if two systems are in thermodynamic equilibrium with a third system, the two original systems are in thermal equilibrium with each other. The first law of thermodynamics is in fact law of conservation of energy. �e�?�րI@�ڸ- ��na=�쳙���lM^Ah��]�")qZ�����;iJ�|���AI+)ܦ�dx'ADsk��$j���$�y^$��s�~�;Mr��!�O]6i���&�2._�g���b�\��!�b/�.���O5�c���T)}Ӎ sH��zh �Q��/e���|/KV���BR����;v��ZS�B��kq��}\ To measure human body temperature. 1). And that property is Temperature. I will also explain you zeroth law of thermodynamics in easy way and you will love this. �E0�8����ѕF�g(��R� O�AdZ�kZD*Ωk��xHu�.�K��8��tN��Ps���ǃG�8��"�ر_SIq:횺Q�����ɲ��pk��w�c�r��3�ll�5���4����Ź=�ɶ�#�l��R���k���C����\k3��5�캎�=��aը���E��,tt��&C3|��(���q����=*�k�� �y|D ��ah�L�Wޫ� P*�8�R�(��+v@�N>�Ny� ���U ��Ri�nWi�Ȇ���������V���`�sj(�}PIH�^�#.|�*���7�2���� However, in simple terms, it can be said, “Systems that are in therm… The zeroth law of thermodynamics states that if two thermodynamic systems are each in thermal equilibrium with a third one, then they are in thermal equilibrium with each other. In reviewing the laws of thermodynamics, the zeroth law is the touchstone we used in introducing our definition of temperature. "_�wr��F�`�Hi���6-�u��R� To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser. This confusion was there because, this laws gives more clear explanation of temperature compare to other three laws of thermodynamics. There are three laws of thermodynamics: Zeroth law of thermodynamics; First law of thermodynamics; Second law of thermodynamics; Zeroth law of Thermodynamics . Not to mention, the old laws of thermodynamics were even given their respected nomenclature (like 1st, 2nd, 3rd). I will also show some practical examples of zeroth law of thermodynamics which happens around you. 2). Fundamentals. 2 (Figure 6). Set alert. Zeroth Law in terms of temperature readings, namely if T. 1 =T. Get more info on thermodynamics, by reviewing the lesson on The Zeroth Law of Thermodynamics. There exists for every thermodynamic system in equilibrium a property called temperature. Systems are in thermal equilibrium if they do not transfer heat, even though they are in a position to do so, based on other factors. To learn more about the laws, check out the law of thermodynamics pdf. These laws describes what you cannot do, if you are in the business (or game) of converting heat into work. Zeroth law of thermodynamics explains the basis of temperature measurement. macrostate) over time and no flows occur in it.One precise statement of the zeroth law is that the relation of thermal equilibrium is an equivalence relation on pairs of thermodynamic systems. These laws describes what you cannot do, if you are in the business (or game) of converting heat into work. About this page. The first law interprets the concept of the conservation of energy at the macroscopic level, and the second law is formulated in terms of the entropy, which has meaning only on the macroscopic level. James Clerk Maxwell put this perhaps more simply when he said, All heat is of the same kind. Zeroth law of thermodynamics is one of the four laws of thermodynamics. In any process, the total energy of the universe remains the same. J�;���3ol��p��\�U0��> �U������A���W~�,��qP�a�:>��=�s|��� xlV%:f*nwM�]�~���L>9��x�*��o��B����"3b�;�EK;(L���Y�l�� c���2W�C�>:�@������- ��/"9O���BNQz,������E6��:���VAׯ ��N �XQz�\������{'��"i0DY�籌7#�0�c�^:n�W��tRy��E�%�*�˓�R�!�(����ң����Z�R������,�����[i�;��F8�,����a��T~f������jj5`��rxү��z��F Q�\v�Diض�KQ� the 3rd Law of Thermodynamics. �HT View Lecture (5).pdf from PHYSICS 1024 at University of Tunku Abdul Rahman. The Zeroth law of thermodynamics 2. Heat Flow and Capacity . C without making thermal contact between system A and B. The lesson covers these objectives meant to further your learning: Define thermal equilibrium The property that tells us if 2 systems are already at thermal equilibrium is the temperature. 3, then T. 1 =T. This law allows the definition of a temperature range, such as temperature scales Celsius, Fahrenheit, Kelvin, Réaumur, Rankine, Newton and Leiden. Therefore in this article, we will be covering zeroth law of thermodynamics. Thermal Expansion and the Gas Law PDF The zeroth law was actually discovered after the other three but it is more fundamental. Download as PDF. What did you find from the zeroth law of thermodynamics? Application of zeroth law of thermodynamics. The major interactions that occur in Thermodynamics are between the systems and their environments. This statement defines the zeroth law of thermodynamics. The zeroth law establishes thermal equilibrium as an equivalence relationship. �M[��E(�J���������`��qT���9ʃA���1��9�KH�P慣���E%�|�� Two systems are said to be in the relation of thermal equilibrium if they are linked by a wall permeable only to heat and they do not change over time. Back to top; 2.1: What is Thermodynamics? Initially, there are two very small, thermally isolated rooms A A A and B. Jurgen M. Honig, in Thermodynamics (Fourth Edition), 2014. B. 3.1 Implications of 3 rd Law • MIT researchers achieved 450 picokelvin in 2003 (less than ½ of one billionth!) For this reason, the definition of temperature given by the Zeroth law is regarded as the empirical definition of temperature. We start here with a consideration of general thermodynamic laws that govern all possible processes in the universe. The First law of thermodynamics 3. Zeroth law of thermodynamics . �7�V��q{,Ҕϲ:�§ќ|��`^�iH�99g�Qݝ The First Law of Thermodynamics Work and heat are two ways of transfering energy between a system and the environment, causing the system’s energy to change. Application of zeroth law of thermodynamics. The law might appear trivial and possibly redundant, but it is a fundamental requirement for the mathematical formulation of thermodynamics, so it needs to be stated. X�y�b�����7�̊�&Y��ȐptpN���b*&���c�� +��B�j���q��\-���;ㄹ]>���=���� �C�D5�T� ���?�qq���[��Cx2?�re��:ِ���� �ԫ=����3]Ƨ�\F�%A����H���gB$��P&d�0r�wJ�iRaT���aA Equality of temperature is a necessary and sufficient … B. Thermodynamics Basics. Academia.edu no longer supports Internet Explorer. �T����J���r,���č�S�Q�JSe���^�<>��m���I� �!�oQ�V_0��C����b9�'���Rw�l3���������J�o�Q��|��){z_�M��Z��;��#�M�*ٻ���Z Lecture 5 Topic 4 THERMODYNAMICS I 1 OUTLINE 1. When a body ‘A’ is in thermal equilibrium with another body ‘b’, and also separately in thermal equilibrium with a body ‘C’, then body ‘B’ and ‘C’ will also be in thermal equilibrium with each other. The credit for formulating the law goes to Ralph H. Fowler. The first, second, and third laws had been explicitly stated already, and found common acceptance in the physics community before the importance of the zeroth law for the definition of temperature was realized. Zeroth law, First Law, Second Law, and Third law of thermodynamics in a detailed way. 4.3 The Second Law “Once or twice I have been provoked and have asked company how many of them could describe the Second Law of Thermodynamics, the law of entropy. Thermodynamics Lecture Notes. The heat capacitance of room A A A is 40 40 4 0 quanta of energy and room A A A contains 32 32 3 2 quanta of energy. Download as PDF. You can download the paper by clicking the button above. Zeroth Law - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. We think scientists had "first" and "second" for a long time, but this new one was so important it should come before the others. t��@o�F��L��(��롊��V����mS�������˅.^7���W�$Y�]=��Q%� � This law stated that energy cannot be created or destroyed, although it may change from one form to another. 2. The zeroth law of thermodynamics is, then, proven to establish an equiv alence relation among bodies which have not only the same temperature, but also the same center of mass four-velocity . There are a few ways to state the Zeroth Law of Thermodynamics, but the simplest is as follows: systems that are in thermal equilibrium exist at the same temperature. The lesson covers these objectives meant to further your learning: Define thermal equilibrium First quantitative measurements of heat capacity, finding a surprising link to atomic theory. Development of the concepts, some early applications, the Zeroth Law of Thermodynamics, calorimetry. In today’s episode we’ll explore thermodynamics and some of the ways it shows up in our daily lives. We can discover an important property of thermal equilibrium by considering three systems. This is fourth law of thermodynamics but there was so much confusion while naming this law about whether it should called the fourth law or by some other name. The zeroth law of thermodynamics in special relativity L. Gavassino Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, ul. System & Surroundings : The part of universe for study is called system and remaining portion is … And that property is Temperature. This known as the Zeroth Law of Thermodynamics 5. As a … zeroth law K P N Murthy (UoH) Thermodynamics Dec 15, 2011 15 / 126. consider system A with a rigid wall made of a metal as its boundary System B also has rigid metal wall as its boundary System A and B are put in contact with each other we observeHEAT ows from either A to B or B to A. System & Surroundings : The part of universe for study is called system and remaining portion is … The heat capacitance of room A A A is 40 40 4 0 quanta of energy and room A A A contains 32 32 3 2 quanta of energy. It is interesting to note that long after the First, Second and Third Laws of Thermodynamics were recognized and named, it was realized that there exists still another law. The property that tells us if 2 systems are already at thermal equilibrium is the temperature. The Zeroth Law of Thermodynamics. The zeroth law was not initially recognized as a separate law of thermodynamics, as its basis in thermodynamical equilibrium was implied in the other laws. Thermodynamics is the study of the … %!�����;ƹ�H�Z�y8�j��mͮ��wD��L�Dv[�5�2���͏�@5B���������}^z��W���=ٗ�/o��]K�n`���OW�Z�/^J{Uֽ�.��]}�8��R����,��w%5�����,2���x��^�`u. You've heard of the laws of thermodynamics, but did you know there are actually four of them? What did you find from the zeroth law of thermodynamics? 0th Law of Thermodynamics Last updated; Save as PDF Page ID 1919; Introduction; References; The Zeroth Law of Thermodynamics states that if two systems are in thermodynamic equilibrium with a third system, the two original systems are in thermal equilibrium with each other. If the system as a whole is at rest, so that the bulk mechanical energy due to translational or rotational motion is zero, then the Thermodynamics Lecture Notes. First law of thermodynamics – Energy can neither be created nor destroyed. 2.3: Mathematical Interlude - Exact and Inexact Differentials; Recommended articles. The zeroth law of thermodynamics is, then, proven to establish an equiv alence relation among bodies which have not only the same temperature, but also the same center of mass four-velocity . The zeroth law of thermodynamics states that if two thermodynamic systems are each in thermal equilibrium with a third, then they are in thermal equilibrium with each other. That statement is the Zeroth Law of Thermodynamics. 1 0 obj << /Type /Page /Parent 91 0 R /Resources 2 0 R /Contents 3 0 R /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 2 0 obj << /ProcSet [ /PDF /Text ] /Font << /F5 105 0 R /F6 102 0 R /F10 119 0 R /F12 124 0 R /F14 129 0 R /F16 46 0 R /F18 47 0 R /F20 48 0 R /F22 49 0 R /F24 50 0 R >> /ExtGState << /GS1 133 0 R >> /ColorSpace << /Cs5 109 0 R >> >> endobj 3 0 obj << /Length 3841 /Filter /FlateDecode >> stream Zeroth law as equivalence relation. View Lecture (5).pdf from PHYSICS 1024 at University of Tunku Abdul Rahman. This statement implies that thermal equilibrium is an equivalence relation on the set of thermodynamic systems under consideration. �2�2��+�@�y��s�-H<6%d_��� u��=��l�ɛ��6n�r�8�_� }�TM�pq��w�j?��7z4u3��s�մ��k-���߹*Gh���fc���N3_}=�կWֆ�o�H����G�U �rc]w��^$P3��3 ��,v�Y����6B�Lym��1�c�$�W�{Z�i�@���#�/Wgr�~s�Ǧ&��@Kk ����ߞ�;���k`���\��Z�Q v3+3����+H�aJf�P��4:��d�9�k�u�A4�IIc��ީ�� �5�L%(wĶ�a�m�衯���G���c����g�{���_I��o�0[0 *�<0��ݎ|azhVSa9�K��04h�!�r�.����c{�����B��n��l����'?�ݧg����T��y�E��mv�6 With the help of this law, we can compare the temperature of system A and system B with the help of third system i.e. For this reason, the definition of temperature given by the Zeroth law is regarded as the empirical definition of temperature. This is a familiar word, but technically this concept of thermal equilibrium is how it is defined: the Zeroth Law … We can discover an important property of thermal equilibrium by considering three systems. The law might appear trivial and possibly redundant, but it is a fundamental requirement for the mathematical formulation of thermodynamics, so it needs to be stated. Jurgen M. Honig, in Thermodynamics (Fourth Edition), 2014. 1). �]$B.��� }�T^�{�gl���"��b��gΜ��b��m��R��;8�2�C@-��*��ы7B��; |K7��^�n�R5r�|��8��Y�F)JG����Z[. Zeroth law of thermodynamics explains the basis of temperature measurement. This says in essence that the three bodies are all the same temperature. Zeroth law of thermodynamics: If two systems are both in thermal equilibrium with a third then they are in thermal equilibrium with each other. 1.2 The Zeroth Law of Thermodynamics. Chapter 3 Introduction to Thermodynamics 3.1 Temperature and the Zeroth Law of Thermody-namics When you first studied physics, starting with mechanics, you worked with three fundamental dimensions — length, mass and time — and corresponding units — meters (m), kilograms (kg) and seconds (s). Zeroth law of thermodynamics . The law is based on temperature measurement. The laws are as follows 1. Enter the email address you signed up with and we'll email you a reset link. We're not really sure why this law is the zeroth. This is a familiar word, but technically this concept of thermal equilibrium is how it is defined: the Zeroth Law introduces the concept and property of temperature. %PDF-1.3 %���� Lecture 5 Topic 4 THERMODYNAMICS I 1 OUTLINE 1. 1.2 The Zeroth Law of Thermodynamics. From the zeroth law of thermodynamics we found that there is one physical property which indicates whether the bodies are in thermal equilibrium or not. Bartycka 18, 00-716 Warsaw, Poland 14 May 2020 ABSTRACT We critically revisit the de nition of thermal equilibrium, in its operational formula-tion, provided by standard thermodynamics. The zeroth law of thermodynamics is one of the four laws of thermodynamics, which states that if two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with one another. 3.1 Implications of 3 rd Law • MIT researchers achieved 450 picokelvin in 2003 (less than ½ of one billionth!) What is most important is that the Zeroth Law establishes that temperature is a fundamental and measurable property of matter. The first, second, and third laws had been explicitly stated already, and found common acceptance in the physics community before the importance of the zeroth law for the definition of temperature was realized. ... 4.0 The Zeroth Law • The First and Second Laws were well entrenched when an additional Law was recognized (couldn’t renumber the 1 st and 2nd Laws) Zeroth law of thermodynamics – If two thermodynamic systems are each in thermal equilibrium with a third, then they are in thermal equilibrium with each other. Yet I was asking something which is about the scientific equivalent of: ‘Have you read a work of Shakespeare?’ ” C.P.Snow (1959) There are a few ways to state the Zeroth Law of Thermodynamics, but the simplest is as follows: systems that are in thermal equilibrium exist at the same temperature. With the help of this law, we can compare the temperature of system A and system B with the help of third system i.e. The Zeroth Law of Thermodynamics. Accordingly, thermal equilibrium between systems is a transitive relation. If you want to skip to any part of this article, feel free to read your interested topic from the table given below. It can also be stated as the total energy of the system and its surroundings is conserved. 2. You've heard of the laws of thermodynamics, but did you know there are actually four of them? The zeroth law of thermodynamics states that if two thermodynamic systems are each in thermal equilibrium with a third one, then they are in thermal equilibrium with each other. ... 4.0 The Zeroth Law • The First and Second Laws were well entrenched when an additional Law was recognized (couldn’t renumber the 1 st and 2nd Laws) To know more do refer to the Thermodynamics PDF linked above. An equivalence relationship on a set (such as the set of all systems each in its own state of internal thermodynamic equilibrium) divides that set into a collection of distinct subsets ("disjoint subsets") where any member of the set is a member of one and only one such subset. The First law of thermodynamics 3. C without making thermal contact between system A and B. � M�2�@�~k0x��~'�#�1pX$^^ֶ�ӂ�/���W�b��X�M��J�;��y�{l��l�^N^��D�6�:�s�t�'�rRG�O�7s&���).�ɨߗ>�(��3zrD�Nj�D!�&+N���ًG�ef�\�[^����iJ�Ң���m�=y �^#���>H;t%M�=��F�%i��:0G�Y��q�2OVV�"-(h@w��'Z�)�5ɋH9d����!,��ϐ��;�d���у�;%�g��9� �M���U``dr���H�:� 7�U��vРu�6q� The amount of heat transferred depends upon the speed and motion of the atoms or molecules, as they interact with one another. This known as the Zeroth Law of Thermodynamics 5. The Zeroth law of thermodynamics 2. A thermodynamic system is by definition in its own state of internal thermodynamic equilibrium, that is to say, there is no change in its observable state (i.e. There are three laws of thermodynamics: Zeroth law of thermodynamics; First law of thermodynamics; Second law of thermodynamics; Zeroth law of Thermodynamics . To measure human body temperature. There are 4 laws to thermodynamics, and they are some of the most important laws in all of physics. ɢ���ģ8)����Ci� Zeroth law mcq, mcqs on Zeroth law of thermodynamics, multiple choice questions on Zeroth law of thermodynamics, zeroth law of thermodynamics multiple choice question, chain drive objective questions, quiz on Zeroth law, mcq on Zeroth law of thermodynamics, Zeroth law of thermodynamics questions and answers, Zeroth law of thermodynamics objectives questions,test series on Zeroth law. Set alert. Zeroth law: you CANNOT ignore the temperature of your heat engine. Thermodynamics Laws in Pdf Notes Zeroth Law Second Law 3rd Law Thermodynamics : Science which deals with study of different forms of energy and quantitative relationship. A, B, and C, that initially are not in thermal equilibrium. A, B, and C, that initially are not in thermal equilibrium. About this page. m�?C|`�MD�q�哀`��φ���||�Vx���y���"���*�a9�T;J�q�ν���:��^5`F����2"9� ��,;�%L��f^b%V_4!%���<9,�Dq^NBP�kǭt�b�9m��{a��_I/��f��k-�KAQ�a4>$,93����j^� �IL�#I����Z��1I��l�h�"��}��A� ��ާ�#ŨL#aK>�"�F+s#�(�@���Y�=S�Ob�_0�ݚHd��E�R��+"Ol@��b>���- � ���ܺ� It states that ”when two bodies are in equilibrium with a third body, then they are also in thermal equilibrium with each other. Zeroth Law of Thermodynamics, which introduces the concept of temperature and thermodynamic equilibrium where two objects attain the same temperature when brought in thermal co ntact. ��_ r�� ��̓�Dqkĵ--k8���n� Heat and Temperature PDF. (Absolute temperature scales: K = 273.15+oC, R = 459.9 +oF) 2. Fundamentals. 2). The zeroth law of thermodynamics states that "if two bodies A and B are separately in thermal equilibrium with a third body C, then A and B are in thermal equilibrium with each other.. Hope you have got a brief idea about Thermodynamics. This note covers the following topics: systems surroundings and thermodynamic variables work and equilibrium introduced, temperature and the zeroth law of thermodynamics, basic properties of basic systems, reversible processes, internal energy: heat capacities and the first law of thermodynamics, isothermal and adiabatic expansions, ideal gas and … This video is about the Zeroth Law of Thermodynamics in Physics. �� B. the 3rd Law of Thermodynamics. Initially, there are two very small, thermally isolated rooms A A A and B. Fundamental notions of classical thermodynamics and the ZEROTH, FIRST & SECOND LAWS Introduction. From the zeroth law of thermodynamics we found that there is one physical property which indicates whether the bodies are in thermal equilibrium or not. Zeroth law of thermodynamics: If two systems are both in thermal equilibrium with a third then they are in thermal equilibrium with each other. That statement is the Zeroth Law of Thermodynamics. Not to mention, the old laws of thermodynamics were even given their respected nomenclature (like 1st, 2nd, 3rd). This note covers the following topics: systems surroundings and thermodynamic variables work and equilibrium introduced, temperature and the zeroth law of thermodynamics, basic properties of basic systems, reversible processes, internal energy: heat capacities and the first law of thermodynamics, isothermal and adiabatic expansions, ideal gas and … Physica A-statistical Mechanics and Its Applications, 1986, Irreversible Thermodynamics for Quantum Systems Weakly Coupled to Thermal Reservoirs, Properties of quantum Markovian master equations, Non-markovian behavior in low-temperature damping An application of the averaging method, Penrose Foundations of statistical mechanics, Age and Age Fluctuations in an Unstable Quantum System. The response was cold: it was also negative. This is the explanation of all laws of Thermodynamics I.e. It states that ”when two bodies are in equilibrium with a third body, then they are also in thermal equilibrium with each other. 3. and T. 2 =T. Sorry, preview is currently unavailable. The Zeroth Law of Thermodynamics states that if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other.
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