This is the principle of the degradation of energy. This hierarchy and this imbalance are the basis of the formulation of the second principle. In fact physical, chemical, and electrical energy can be completely changed into heat. The concept of entropy is particularly abstract and by the same token difficult to present. There seems to be a contradiction between the first and second principles.
Statistical theory provides the answer.
In the form of heat this energy is reduced to a state of maximum disorder in which each individual movement is neutralized by statistical laws. And maximum disorder is entropy. But where motion is ineffective on the spot and headed in all directions at the same time, energy will be present but ineffective. One might say that the sum of all the quantities of heat lost in the course of all the activities that have taken place in the universe measures the accumulation of entropy. One can generalise further.