As Cold As It Gets
A video by Otago University NZ regarding the study of the behaviour of matter at temperatures less than one millionth of a degree above absolute zero. Full article and more videos- http://www.eequalsmcsquared.auckland.ac.nz/sites/emc2/videos/cool-kiwi-science.cfm more info- 'the coldest place in the universe' http://www.smithsonianmag.com/science-nature/phenom-200801.html 'At temperatures less than one millionth of a degree above absolute zero, some extraordinary new behaviours of matter emerge. The most striking example is Bose-Einstein condensation - an exotic state of matter in which the quantum wave properties of atoms are dominant. The realm of ultra cold gases, which has been achieved only in the past decade, is one of the highest profile areas of contemporary Physics, being recognised by Nobel prizes in 1997 (laser cooling) and 2001 (Bose-Einstein condensation). Ultra cold gases may provide the basis for vastly more powerful computers, called quantum computers.'
Category: TechTags: particle physics new zealand science bose-einsteine condensate absolute zero
Related Videos
Zero Point Technologies, Monoatomic Gold, and The Secret of Modern AlchemyViews: 94,564
By: IamLegend333
@mcgorgomagan 1:37 is the cooling video in the top left. not as exciting as it sounds
That's great, now I can finally get a cold Pepsi.
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
If you work fast and speak to people Hello, you have scar, other think you are idiot.
So cool! Physics is a wonderfully amazing feild of science, this demonstrates it expertly.
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?
@mictian101 yeah. The background radiation in space is about 5 kelving or so:O (I believe)
and yet they still wouldn't legalize marijuana...
@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.
The atoms do indeed get cold enough, this is regular science. And its extremely exciting.
Can you guys do a vid on superfluidity? There are only old ones on youtube :(
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.
@jad0halimeh Awesome reply, thank you
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.
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).
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!
the guy talks about creating the second machine like him and his buddies whipped one up in the garage on their spare time haha
yes but that is no where close to the temperature needed to make super fluid you need to be below 2 kelvin i believe.
-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 :)
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?
I thought he was saying ettins for a while... :(
Not bad. Nice and informative. I'm sure the fella at the end is gay.
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
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
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.
More Thumbnails:
Email This Video to a Friend