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As Cold As It Gets

  1. Jul 1, 2010 at 03:43 PM by pauldve

    @mcgorgomagan 1:37 is the cooling video in the top left. not as exciting as it sounds

  2. Jun 17, 2010 at 01:25 AM by karozans

    That's great, now I can finally get a cold Pepsi.

  3. Jun 5, 2010 at 10:41 AM by gaynorglowellxsingh

    That was a great teaching tool. I learned a lot. I am working on a theory and this video has answered one of my questions. Thanks

  4. May 15, 2010 at 11:01 AM by TheNataliaRR

    If you work fast and speak to people Hello, you have scar, other think you are idiot.

  5. May 11, 2010 at 03:29 PM by synthetikcheese

    So cool! Physics is a wonderfully amazing feild of science, this demonstrates it expertly.

  6. May 6, 2010 at 07:51 PM by theratsofEzekiel

    Is this condensate completely synthetic? It couldn't occur in certain parts of the universe, travelling as a wave condensate and "recondensing" like an Earth raincloud?

  7. May 2, 2010 at 03:13 PM by libbern

    @mictian101 yeah. The background radiation in space is about 5 kelving or so:O (I believe)

  8. Apr 30, 2010 at 04:38 PM by daf867

    and yet they still wouldn't legalize marijuana...

  9. Apr 20, 2010 at 06:55 PM by blackcraft2

    @mictian101 You can not reach a state of no entropy. you can get close to it, but particles will always have energy. the closest to absolute 0 will be a few nano kelvin at best, you can not stop the movement of a particle, It is proven to be impossible.

  10. Mar 3, 2010 at 07:06 PM by Opheliaimmortal777

    The atoms do indeed get cold enough, this is regular science. And its extremely exciting.

  11. Feb 6, 2010 at 06:50 AM by meusicalentall27

    Can you guys do a vid on superfluidity? There are only old ones on youtube :(

  12. Dec 24, 2009 at 01:08 AM by daleetMeh

    The atoms do not get near cold enough. The temperatures they are discussing in this video are millions of times colder than anything scientists have observed which occurs naturally.

  13. Dec 17, 2009 at 08:00 PM by Neutrinoghost

    @jad0halimeh Awesome reply, thank you

  14. Dec 17, 2009 at 07:47 PM by jad0halimeh

    For that you also need more devices. Plus, not everything you see on that optical tables is lenses. You got mirrors, mechanical shutters, Acousto Optic Modulators, half-wave plates, quarter-wave plates, irises, etc... It's a pretty big technological challenge to build such experiments, and even after they start to work, any malfunction requires A LOT of effort to find the error that causes it. It is, however, truly fascinating to manipulate matter in such a way. I hope this helps.

  15. Dec 17, 2009 at 07:43 PM by jad0halimeh

    you have several lasers, not just one. for example, if you want to cool Rubidium 87 isotope atoms into a condensate, then you need 4 different lasers. Then you use one of those 4 beams for other purposes besides cooling, such as imaging in order to see the atom cloud as it cools. Also, for any one beam, you have to do a lot of stuff. In "laser cooling" you shine 3 pairs of lasers along 3 axes, so that's 6 beams that come from just one beam. Also you need proper light polarization (circular).

  16. Dec 17, 2009 at 02:39 AM by Neutrinoghost

    What is the point of all the lenses? I know they are there to focus light, but the path of the lazer seems very complicated!

  17. Oct 20, 2009 at 11:55 AM by Sierrafox17

    the guy talks about creating the second machine like him and his buddies whipped one up in the garage on their spare time haha

  18. Oct 20, 2009 at 11:53 AM by Sierrafox17

    yes but that is no where close to the temperature needed to make super fluid you need to be below 2 kelvin i believe.

  19. Sep 24, 2009 at 07:46 PM by mictian101

    -273.15 degrees C is absolute zero. Physicist's use Kelvins, and they are trying to reach a state of "no entropy," from what I can tell, no movement. They are within nanokelvins of zero. I don't know what the threshold for this state of matter is, but I think the moon is too warm :)

  20. Sep 22, 2009 at 12:52 PM by Gqgangsterz10

    So the moon has parts that reach -240ish c , What would happen if it got cold enough that the atoms began to act like superfluids ? Anyone know?

  21. Sep 5, 2009 at 08:49 AM by noeyedeer2jk89sx

    I thought he was saying ettins for a while... :(

  22. Aug 28, 2009 at 05:44 AM by porkachov

    Not bad. Nice and informative. I'm sure the fella at the end is gay.

  23. Aug 22, 2009 at 05:41 AM by universetechnique

    Hello please check universetechnique, universetechnique2, greatsorcerer, greatsorcerer2, thaijellybean242. Thank you. Enjoy learn something new. View all my favorite. Thank me later. Be a part of what I know.Welcome to my life. You have been selected to view the opening movie trailer of the movie Touch of Fluid.Remember I was here. Thai

  24. Aug 22, 2009 at 05:40 AM by universetechnique

    Hello please check universetechnique, universetechnique2, greatsorcerer, greatsorcerer2, thaijellybean242. Thank you. Enjoy learn something new. View all my favorite. Thank me later. Be a part of what I know.Welcome to my life. You have been selected to view the opening movie trailer of the movie Touch of Fluid.Remember I was here. Thai

  25. Jul 10, 2009 at 08:37 AM by rihnosaur

    That's why if you were to step into the actual lab, you will notice big Hepa filters and canopies (to create a positive pressure on the optics table) over most optical experiments to minimize the amount of dust. Similarly, this is why these kinds of experiments require constant cleaning of critical optics and constant recalibration and adjustment.

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