Entropy developed as a way of accounting for the basic asymmetry in the conversion of work and heat. Work is easily converted into heat, but heat is not easily converted back into work. The conversion of work into heat occurs spontaneously, but the opposite conversion does not. | Entropy developed as a way of accounting for the basic asymmetry in the conversion of work and heat. Work is easily converted into heat, but heat is not easily converted back into work. The conversion of work into heat occurs spontaneously, but the opposite conversion does not. |