<Ul> <Li> Zeroth law of thermodynamics : If two systems are in thermal equilibrium with a third system , they are in thermal equilibrium with each other . This law helps define the concept of temperature . </Li> <Li> First law of thermodynamics : When energy passes , as work , as heat , or with matter , into or out from a system , the system 's internal energy changes in accord with the law of conservation of energy . Equivalently , perpetual motion machines of the first kind ( machines that produce work with no energy input ) are impossible . </Li> <Li> Second law of thermodynamics : In a natural thermodynamic process , the sum of the entropies of the interacting thermodynamic systems increases . Equivalently , perpetual motion machines of the second kind ( machines that spontaneously convert thermal energy into mechanical work ) are impossible . </Li> <Li> Third law of thermodynamics : The entropy of a system approaches a constant value as the temperature approaches absolute zero . With the exception of non-crystalline solids ( glasses ) the entropy of a system at absolute zero is typically close to zero , and is equal to the natural logarithm of the product of the quantum ground states . </Li> </Ul>
<Ul> <Li> Zeroth law of thermodynamics : If two systems are in thermal equilibrium with a third system , they are in thermal equilibrium with each other . This law helps define the concept of temperature . </Li> <Li> First law of thermodynamics : When energy passes , as work , as heat , or with matter , into or out from a system , the system 's internal energy changes in accord with the law of conservation of energy . Equivalently , perpetual motion machines of the first kind ( machines that produce work with no energy input ) are impossible . </Li> <Li> Second law of thermodynamics : In a natural thermodynamic process , the sum of the entropies of the interacting thermodynamic systems increases . Equivalently , perpetual motion machines of the second kind ( machines that spontaneously convert thermal energy into mechanical work ) are impossible . </Li> <Li> Third law of thermodynamics : The entropy of a system approaches a constant value as the temperature approaches absolute zero . With the exception of non-crystalline solids ( glasses ) the entropy of a system at absolute zero is typically close to zero , and is equal to the natural logarithm of the product of the quantum ground states . </Li> </Ul>
which law of thermodynamics is based on the conservation of energy law
which law of thermodynamics is based on the conservation of energy law
First law of thermodynamics
First law of thermodynamics