Geeky goodness
I remember referring to temperatures in Kelvin for a while. People couldn't understand why I thought a 290 degree day would be chilly...

Very good explanation of temperature. The explanation of laser cooling, not so. It is counter-intuitive that the atoms would radiate more of the laser energy out than they receive.
Wiki explains it better
http://en.wikipedia.org/wiki/Laser_cooling

>> ^cybrbeast:
Very good explanation of temperature. The explanation of laser cooling, not so. It is counter-intuitive that the atoms would radiate more of the laser energy out than they receive.
Wiki explains it better
http://en.wikipedia.org/wiki/Laser_cooling


Isn't this the process they described for laser cooling (albeit in simple terms)? http://en.wikipedia.org/wiki/Sisyphus_cooling

I did my master's thesis on some of the weird quantum effects he mentions at the very end. Such a cold cloud of gas can actually work as a quantum computer.

> Such a cold cloud of gas can actually work as a quantum computer.

Just dont do what I did, I went to Best Buy and bought the Nvidia Quantum Computing card, which comes with a can of Rubidium, but then we all huffed the Rubidium because you get to meet Jesus for about 10 minutes.

Metal parts, glass parts for windows and other parts covered in tinfoil. Too technical for me.

Ok, once they started getting into the technical of how the lasers actually can cool molecules... Well, I understood the tennis ball part.

"Hot is simply a measure of how much energy something has." (1:15)

This is slightly inaccurate, right? Two species of gas can have vastly different amounts of kinetic energy, but still have the same temperature. That's what specific heat measures.

I always assumed temperature was strictly translational kinetic energy, and the reason water takes so long to heat up is because the energy it acquires goes into other modes of freedom, such as vibrational or rotational motion (hence its high specific heat).

Can someone back me up or correct me on this?

I think it would be good to *discuss this since there is a couple unanswered questions, that I dont have answers to

This video is being sent to Sift Talk for discussion - discuss requested by reiwan.

I concur.

Sorry, but this isn't what the * discuss invocation is for. It should only be used if the video in question might be a dupe, a self-link, or in violation of Sift guidelines; not to to hold a roundtable discussion of a videos merits and/or weaknesses.

*return

Returning this video from Sift Talk - return requested by kronosposeidon.

Invocation fail

The bald guy is hot, that's all I know.

If you think this is cool- You people would poop yourself if you worked where I worked...

and it is a billion times colder than our "cold" day. 1e-6 K, 1e3 K is -173 C... so 1e9 difference.

*learn

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