[QUOTE=CRGreathouse;460092]I don't think so, at least not in the sense that energy is conserved[/QUOTE]

Hey, I'm very comfortable being shown I am incorrect.

Please bring it forward. I *like* learning new things.

Haha, I love you guys, and I love how the discussion became technical, following some typos and some fine humor. That is why I like this forum.

Now, to contribute, technically you can create cold. I mean create it, not move the heat away like in the fridge. You just have to slow or totally stop the motion of the particles there. It is not at the hand of ordinary people, but it can be done. In modern physics labs, "real" scientists use lasers to do so, i.e. to slow down particles and create temperatures close to zero Kelvin (edit: and below :razz:)

[QUOTE=chalsall;460089]At the end of the day, we are. The Universe is a closed system.Even the rotational momentum should equal zero.[/QUOTE]Why should it have zero angular momentum? It's far from obvious to me.

[QUOTE=LaurV;460114]That is why I like this forum. [/QUOTE]

Ditto. It is great having a place where people can contribute to and learn from many serious people who have wide ranging training and experience. And where being wrong is perfectly OK -- the scientific method. This is how we learn.

[QUOTE=LaurV;460114]Now, to contribute, technically you can create cold. I mean create it, not move the heat away like in the fridge. You just have to slow or totally stop the motion of the particles there. It is not at the hand of ordinary people, but it can be done. In modern physics labs, "real" scientists use lasers to do so, i.e. to slow down particles and create temperatures close to zero Kelvin (edit: and below :razz:)[/QUOTE]

But... You are comparing apples and oranges here. You are ignoring that the lasers being used to lower the temperature in an enclosed space are outside of said enclosed space, but consume energy to do the work.

Thus, again, you are not creating cold, but simply moving heat from one space to another.

[QUOTE=xilman;460126]Why should it have zero angular momentum? It's far from obvious to me.[/QUOTE]

You are correct; I'm incorrect. We don't know what happened at the "Beginning of Time" in our Universe, so assuming all energy values should equal zero is not a valid assumption.

"In the beginning there was nothing, which exploded."