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 states that the total entropy can never decrease over time for an isolated system, that is, a system in which neither energy nor matter can enter nor leave. The total entropy can remain constant in ideal cases where the system is in a steady state, or is undergoing a reversible process. In all spontaneous processes, the total entropy always increases and the process is irreversible. The increase in entropy accounts for the irreversibility of natural processes, an