SECOND LAW OF THERMODYNAMICS

Studens have stated the first law of Studens have stated the first law of thermodynamics and defined the concepts: thermodynamics and defined the concepts:

heat, thermodynamic system, internal energy and heat, thermodynamic system, internal energy and work work

done in thermodynamic system.done in thermodynamic system. After separation into groups students got After separation into groups students got working working

sheets and assignments. sheets and assignments.

Member of each group presented their Member of each group presented their conclusions and wrote them on the conclusions and wrote them on the blackboard.blackboard.

For homework they had to find some For homework they had to find some examples that prove those conclusions.examples that prove those conclusions.

One student presented his homework which includedOne student presented his homework which includedexample of irreverzibile process. Other students thoughtexample of irreverzibile process. Other students thoughtof more natural irreversible processes. After showingof more natural irreversible processes. After showingstudents PowerPoint presentation about entropystudents PowerPoint presentation about entropythey defined entropy as general law.they defined entropy as general law.

The total entropy of the universe is constantly INCREASING!!!

To understand concept of equilibrium To understand concept of equilibrium and probability in interpretation of and probability in interpretation of entropy students performed experiment.entropy students performed experiment.

All the results of experiments have beenAll the results of experiments have beenput in the table and then they´ve put thatput in the table and then they´ve put thatdata on millimeter paper.data on millimeter paper.

On prepared transparent sheet for On prepared transparent sheet for graphoscope with axes, two students have graphoscope with axes, two students have done plotting during the class.done plotting during the class.

These were conclusions : These were conclusions : the most probable state is 5 heads the most probable state is 5 heads

and 5 tailsand 5 tails the least probable state is all heads the least probable state is all heads

or all tailsor all tails

The second law of thermodynamics,The second law of thermodynamics,in terms of probability, reduces toin terms of probability, reduces tothe statement that those processesthe statement that those processesoccur which are most probable.occur which are most probable.That way students learned andThat way students learned andunderstood concept of probability inunderstood concept of probability ininterpretation of entropy.interpretation of entropy.

Discussing about heat Discussing about heat death of Universe death of Universe students got a greater students got a greater insight into concept of insight into concept of entropy and analogy entropy and analogy that can be used in that can be used in many other scinces.many other scinces.

For homework they explored differences For homework they explored differences beetween theory of evolution and concept of beetween theory of evolution and concept of entropy.entropy.

Then they wrote an individual essay on:Then they wrote an individual essay on: „ „Evolution Vs. Second Law Of Evolution Vs. Second Law Of

ThermodynamicsThermodynamics“ “ using previous knowledge.using previous knowledge.

Students discussed about global warming Students discussed about global warming and thermal pollution, after watching a short and thermal pollution, after watching a short movie about global warming. movie about global warming.

The aim wasThe aim was to rise awarenes about human to rise awarenes about human impact on nature and climate changes.impact on nature and climate changes.

The table of energy resources was showen toThe table of energy resources was showen to

students and we have discussed each source.students and we have discussed each source.

The aimThe aim was to rise awareness about preserving was to rise awareness about preserving

environment and future of energy resources as environment and future of energy resources as

well as of the planet.well as of the planet.

In course evaluation form they wrote that they liked that way of work.