Expand all + Entropy 4F10.10 - Time Reversal 4F10.20 - Balls in Pan 4F10.55 - Strike a Match + Heat Cycles and Engines 4F30.10 - Stirling Engine 4F30.15 - Hot and Cold Stirling Engines 4F30.20 - Steam Engine 4F30.60 - Nitonol Engine