Come to think of it, the work done on a body is converted into some form of energy.But why is it that it ultimately tends to produce heat? In physics we all talk about energy dissipation in the form of heat,but why not electricity, or even light(somehow or the other it tends to form heat,exceptions barred).Why is thermal death,so prevalent a term for non usable energy, and not, say 'electrical death'?What specific mechanism, if any, exists to see to it that all energy is wasted as heat,and not as some other non usable form?

Come to think of it, the work done on a body is converted into some form of energy.But why is it that it ultimately tends to produce heat? In physics we all talk about energy dissipation in the form of heat,but why not electricity, or even light(somehow or the other it tends to form heat,exceptions barred).Why is thermal death,so prevalent a term for non usable energy, and not, say 'electrical death'?What specific mechanism, if any, exists to see to it that all energy is wasted as heat,and not as some other non usable form  ?