11 replies to this topic

[Delhommey]

It may sound less likely than hell freezing over, but physicists have created an atomic gas with a sub-absolute-zero temperature for the first time¹. Their technique opens the door to generating negative-Kelvin materials and new quantum devices, and it could even help to solve a cosmological mystery

http://www.nature.com/news/quantum-gas-goes-below-absolute-zero-1.12146

[Delhommey]

If built, such systems would behave in strange ways, says Achim Rosch, a theoretical physicist at the University of Cologne in Germany, who proposed the technique used by Schneider and his team³. For instance, Rosch and his colleagues have calculated that whereas clouds of atoms would normally be pulled downwards by gravity, if part of the cloud is at a negative absolute temperature, some atoms will move upwards, apparently defying gravity

[Johnny Rockets]

[Jase]

This just blew my mind.

although I'd prefer they call it "anti-energy". Dark energy sounds like sorcery.

You say floating skateboards, I say fusion reactors.

[catfang]

There are some absolutes and then there are absoluts

[Johnny Rockets]

There are some absolutes and then there are absoluts

Now THAT I have a much better understanding of...

[pstall]

this helps me in using the excuse whenever i'm late when i go does any of us really know what time it is?

[mmmbeans]

This just blew my mind.

although I'd prefer they call it "anti-energy". Dark energy sounds like sorcery.

You say floating skateboards, I say fusion reactors.

floating fusion reactors.

[Davidson Deac II]

So we can now build quantum torpedos and quantum slipstream drives? Sign me up.

[Carolina Husker]

I'd spread that poo all over my yard in the fall to keep the leaves off.

[Mr. Scot]

The statement "there are no absolutes" would be an absolute.

[Scrumtrilescent]

Only the Sith deal in absolutes.