by PrismEntity » 28 Mar 2011, 14:25
The second law is not a simple concept to explain. I have heard it said that less than 100 people in the world really understand entropy.
Usually in forums like this, its brought up in some regard to evolution.
Before we get to the point about how the second law is involved in the debate between creationists and evolutionists, lets try to understand it at a very basic level.
Consider a battery. Chemical forces maintain a separation of charge between the positive and negative terminals. All this means is there a huge tide of electrons that want to get to the other side. A good analogy of this is a bucket of water held ten feet in the air. The water is storing a certain amount of potential energy (the capacity to do work). We could build a wheel that the water would turn as it fell and extract the work from the energy if we wanted.
In a similar way, the "bucket" of electrons (the negative terminal) stores a certain amount of energy that can be tapped asw it "falls" to the ground (the positive terminal).
The more electrons that flow from - to + the more "in balance" the two poles are and the less energy there is that can be 'extracted' to do work. (and YES, current flows from negative to positive, I dont feel like explaining it at the moment, if u wanna argue, come on...)
The amount of """USABLE""" energy in relation to """TOTAL""" energy is entropy.
You cannot create or destroy energy.
However, not all (distribution of) energy is equal.
a room that is at 70 degrees F EVERYWHERE IN THE ROOM has the same amount of overall 'energy' that a room which is at 69 DF in one equal half of the room and 71 DF
in the other, BUT.... you can tap the second example to get it to do work (that you WANT it to do), but not the first, even though there is the same amount of energy in the room.
A new battery has low entropy. A used battery has high entropy. They both have the same energy.
Any questions?
"It is a very great offense to my intellect that the very things that I despise other people for being credulous of actually occur to me..."