[AntonioLao]

Total Integrated Mental Evaluation. Transcendentally Intercepted Meditative Existence.

[Farsight]

Originally Posted by AntonioLao

Experiments found no abstraction about the thermodynamics of cooking unless you prefer eating the air and even that you actually breathe in some of the oxygen molecules.

Heat is an aggregate measure of motion, of say molecules in an ideal gas. That motion is real. The molecules are moving, they will make other molecules move. There's no abstraction here. Add more motion and you add more heat. It burns you. It's real.

Entropy is just measuring the deviation from the mean. More entropy means less deviation, more sameness. It isn't like heat. You can't add more "entropy" to a body of gas like you can add more heat. All you might do is stir it up, and try to get the molecular velocities to equalize a little. It really is sameness. It really is an abstraction. That's why using it to bolster that other abstraction called the arrow of time just doesn't work.

[AntonioLao]

Entropy is roughly defined as the change in heat energy divided by the absolute temperature in degrees kelvins see http://en.wikipedia.org/wiki/Entropy

[Farsight]

Originally Posted by AntonioLao

Entropy is roughly defined as the change in heat energy divided by the absolute temperature in degrees kelvins see http://en.wikipedia.org/wiki/Entropy

And I quote:

Originally Posted by Wikipedia

In thermodynamics (a branch of physics), entropy, symbolized by S,[3] is a measure of the unavailability of a system’s energy to do work.[4][5] It is a measure of the randomness of molecules in a system and is central to the second law of thermodynamics and the fundamental thermodynamic relation, which deal with physical processes and whether they occur spontaneously. Spontaneous changes, in isolated systems, occur with an increase in entropy. Spontaneous changes tend to smooth out differences in temperature, pressure, density, and chemical potential that may exist in a system, and entropy is thus a measure of how far this smoothing-out process has progressed

It really is "sameness". I kid ye not.

[AntonioLao]

Originally Posted by Farsight

It really is "sameness".

That's the endgame scenario at maximum entropy or the death of the universe at zero temperature of infinite expanded volume. But some believe that at certain space-time point the universe will reverse its action and start to contract.

[Farsight]

Yes, many find the heat death of the universe a little depressing.

It might surprise you, but it's also conceivable that the early universe was in a state of maximum entropy. An early universe could have been intensely uniform, with a dead still sameness that meant there was no available energy for any possible inhabitants. But let that universe expand, and suddenly everything is moving, and things are never the same again.

I don't share the view that the universe will one day contract. The expansion appears to be going exponential. I am however a little intrigued by the "pebbles in a pond" idea. Throw a pebble into a pond, and it's like the big bang. The outward ripples are akin to our universe. Then throw another.

[AntonioLao]

Originally Posted by Farsight

the early universe was in a state of maximum entropy

If that is the case then the big bang cannot happen second law of thermodynamics in reverse.