News:

It is our goal to harrass and harangue you ever further toward our own incoherent brand of horse-laugh radicalism.

Main Menu

This just in: Universe cheats at EVERYTING

Started by Telarus, August 02, 2012, 11:15:07 PM

Previous topic - Next topic

Telarus

So check this out. Guys is Japan have created a quantum scale "engine" which converts heat to information and then back to energy. WTF you say? Yeah, I had to double-take as well. You kind of just have to read the article, but they've given you a cute little analogy-photo with a little Maxwell's Demon silhouette.

http://www.technologyreview.com/view/420996/physicists-convert-information-into-energy/
QuoteHere's a fascinating piece of work. Build a tiny staircase and place a small polystyrene bead on the bottom step (a staircase is fairly straightforward to construct using electric fields).

It's easy to see the bead being jostled around by the random motion of molecules in the surrounding air, the well-known phenomenon of Brownian motion.

Most of the time, the Brownian motion tends to knock the bead down the stairs but sometimes the jostling is powerful enough to push the bead up a step.

Keep a close eye on the bead using a video camera and every time you see it go up a step, change the electric field so that it cannot drop back down again. This is like placing a barrier behind the bead.

As you repeat this process, the bead will move up the staircase, driven by Brownian motion.

This is exactly the experiment that Shoichi Toyabe at Chuo University in Tokyo and a few buddies have successfully carried out. The implication is that the bead is somehow able to extract energy from the environment, which at first sight, looks like a blatant violation of the 2nd law of thermodynamics....


http://science.slashdot.org/story/12/08/01/2127225/entangled-particles-break-classical-law-of-thermodynamics-say-physicists
Telarus, KSC,
.__.  Keeper of the Contradictory Cephalopod, Zenarchist Swordsman,
(0o)  Tender to the Edible Zen Garden, Ratcheting Metallic Sex Doll of The End Times,
/||\   Episkopos of the Amorphous Dreams Cabal

Join the Doll Underground! Experience the Phantasmagorical Safari!

Triple Zero

I knew there was some sort of connection between information and energy, similarly how there's one between mass and energy. It's also used in some (ridiculously high) upper-bound estimates on either computer processing power (actual physical limits to Moore's Law) or data storage or something.

Going to check those articles out, cool :)
Ex-Soviet Bloc Sexual Attack Swede of Tomorrow™
e-prime disclaimer: let it seem fairly unclear I understand the apparent subjectivity of the above statements. maybe.

INFORMATION SO POWERFUL, YOU ACTUALLY NEED LESS.

The Wizard Joseph

Cool articles!
I am reminded of a quote from one of the faction leaders in Sid Meyer's Alpha Centauri.

Einstein would roll over in his grave. Not only does God play dice, the dice are loaded!
-Chairman Yang
You can't get out backward.  You have to go forward to go back.. better press on! - Willie Wonka, PBUH

Life can be seen as a game with no reset button, no extra lives, and if the power goes out there is no restarting.  If that's all you see life as you are not long for this world, and never will get it.

"Ayn Rand never swung a hammer in her life and had serious dominance issues" - The Fountainhead

"World domination is such an ugly phrase. I prefer to call it world optimisation."
- Harry Potter and the Methods of Rationality :lulz:

"You program the controller to do the thing, only it doesn't do the thing.  It does something else entirely, or nothing at all.  It's like voting."
- Billy, Aug 21st, 2019

"It's not even chaos anymore. It's BANAL."
- Doktor Hamish Howl

LMNO

#3
I hate to say it, but I don't get what the big deal is.

Air molecules have mass, and they have velocity (and by implication, acceleration).  Therefore, they have force (F=ma)

Left unhindered, that force is acting in every which way (sometimes the ball goes up, sometimes it goes down).


But if you have a situation where you can actively select a path the force can act upon (that is, barriers preventing the ball from travelling except in a certain direction), then of course the ball will travel in that direction, eventually.

This is sort of like lochs, only a lot smaller.  We block the river on one side, let it fill up, then release the block so the water can only go in one direction, repeat.

How is this revolutionary, or breaking the 2nd law of thermodynamics?

Nephew Twiddleton

I may have asked this before but does physics define information differently than a layman? I always feel that in this context im missing some sort of nuance. Like is it the same as the sky appears blue to human eyes or twid likes beer or is something more narrow? Like what does the question does information survive a black hole mean?
Strange and Terrible Organ Laminator of Yesterday's Heavy Scene
Sentence or sentence fragment pending

Soy El Vaquero Peludo de Oro

TIM AM I, PRIMARY OF THE EXTRA-ATMOSPHERIC SIMIANS