The thermodynamic free energy is the amount of work that a thermodynamic system can perform. The concept is useful in the thermodynamics of chemical or thermal processes in engineering and science. The free energy is the internal energy of a system minus the amount of energy that cannot be used to perform work. This unusable energy is given by the entropy of a system multiplied by the temperature of the system.
Like the internal energy, the free energy is a thermodynamic state function. Energy is a generalization of free energy, since energy is the ability to do work which is actually free energy.
A perpetual motion is a motion of enduring physical objects that are very large compared with atoms, that continues indefinitely. This is impossible because of friction and other modes of degradation or disruption of form. A perpetual motion machine is a hypothetical machine that can do work indefinitely without an energy source. This kind of machine is impossible, as it would violate the first or second law of thermodynamics.
Thus, machines which extract energy from finite sources will not operate indefinitely, because they are driven by the energy stored in the source, which will eventually be exhausted. A common example is devices powered by ocean currents, whose energy is ultimately derived from the Sun, which itself will eventually burn out. Machines powered by more obscure sources have been proposed, but are subject to the same inescapable laws, and will eventually wind down.
Filipino inventor Ismael Aviso unveiled a tantalizing “free energy” breakthrough over 10 years ago–the kind that would make oil company owners shake in their shoes should it be developed further ... What made the Filipino inventor somewhat of a hot topic in free ...
... Donnan near-equilibrium hypothesis linking membrane voltage and ion changes to metabolism, redox and the free energy of ATP He is also listed as an inventor on 26 US patents, most involving electrolyte composition of parenteral fluids or therapeutic uses of ketone bodies ”.
Phillips, a United States Navy veteran and inventor, has been developing the ultimate clean and free energy generator for homes and cars – powered by the wind and designed for residential spaces ... Phillips is the creator behind MightyWatts, which he describes as the ultimate clean and free energy generator for homes and cars.