Replace the rubber boot and plug the light back in. Turn the lights on to check the right headlight. Turn them off. Repeat this procedure for the left headlight, but first remove the battery hold-down with a ratchet and socket, then remove the battery. Start by removing the negative cable first, then the positive.
Any device that violates the first or second law of thermodynamics is called a perpetual-motion machine. If the device violates the first law, it is a perpetual-motion machine of the first kind. If the device violates the second law, it is a perpetual-motion machine of the second kind. Reversible Processes
The second law of thermodynamics describes the flow of energy in nature in processes which are irreversible. The physical significance of the second law of thermodynamics is that the energy flow in such processes is always toward a more uniform distribution of the energy of the universe.