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# theoritical based help needed Answered

when electricity is passed through a copper wire it becomes magnet.let be the matter ,electricity be  energy and the copper being magnetized be the result.now if we pass magnet through copper wire then it produces electricity.we can say that matter+energy=result again result +matter =that energy.again if we see other examples like if we apply electricity to led light then it produces light again if we apply light to led light it produces electricity.again if we apply electricity to speakers then it produces sound but again if we apply sound to it then it produces electricity.so is the thing that: matter +energy =result and again matter +result=energy is right?has any scientist proved this or it is incorrect?

thanks for viewing and further answering

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When electricity passes through a copper wire it creates a magnetic field. It down't make the copper magnetic. There is a difference there. You get a stronger magnetic field if you run electricity through a coil of wire. Anyway.

Basically what your getting at is summed up in the laws of thermal dynamics and the transformation of energy from one form to another.

thanks for your answer.i just got my mind wrecked up thinking about it.but now i have a satisfying answweer

In addition to what the others have said you might want to look up and read about the arrows of time. Most physical events are reversible as most arrows go both ways (theoretically, and or mathematically) but there are some that are not. It is one of the arguments against time travel. Since some events cannot be reversed then even reversing the flow of time will not result in the universe going back to a previous state since those arrows of time only go in one direction. You also run into problems with the uncertainty principle when you reverse events. Going backwards implies that you have knowledge of everything and can know where everything goes and that goes against uncertainty. In effect you don't ever really reverse an action but instead you are creating a new action that appears to be the reverse of the other but in reality is a new event just going in the other direction.

You are describing reversible processes. Not all processes are reversible and none are 100% reversible. If you apply friction to a spinning disk you get heat but if you apply heat to a spinning disk you don't get friction. If you apply current to a light bulb you get light (and heat) but if you apply light (and heat) to a light bulb you get nothing.

Also your speaker example is exactly the same as your wire/magnet example.