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(Phys Org2)   Awesome: scientists perfect tractor beam. Not So Awesome: it only works on water   (phys.org) divider line 20
    More: Interesting, Nature Physics, mathematical theory, National University of Colombia, physicists, oil spills  
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2791 clicks; posted to Geek » on 10 Aug 2014 at 5:49 PM (15 weeks ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



20 Comments   (+0 »)
   
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433 [TotalFark]
2014-08-10 05:44:21 PM  
Tractor beams don't work on water.  Unless you got power.
 
2014-08-10 05:55:22 PM  

433: Tractor beams don't work on water.  Unless you got power.


God bless you for that.
 
2014-08-10 06:08:26 PM  
As yet no mathematical theory can explain these experiments, Dr Punzmann said.

This is the part that surprises me. Having once been a boy playing in a bathtub, I'm pretty sure you can make waves do anything if you throw the water around the right way. Do an interference pattern the right way and you can make any shape in 2 + time dimensions. You'd think this would be easy to describe.

"It's one of the great unresolved problems, yet anyone in the bathtub can reproduce it. We were very surprised no one had described it before."

In other words this.
 
2014-08-10 06:13:14 PM  
So...a wave is beam?
 
2014-08-10 06:14:54 PM  

69gnarkill69: So...a wave is beam?


A beam of light is made up of a bunch of light waves. Maybe "beam" is the collective noun for "wave".
 
2014-08-10 06:51:47 PM  
Unimpressed:

upload.wikimedia.org
 
2014-08-10 07:20:26 PM  

433: Tractor beams don't work on water.  Unless you got power.


Damn, I came to post this. Never underestimate farkers when it comes to lines from Back to the Future.
 
2014-08-10 07:46:24 PM  
Well, now that we've got tractor beams designed for dorm rooms, can we get a teleporter in motion already?
 
2014-08-10 08:24:10 PM  

Fark like a Barsoomian: As yet no mathematical theory can explain these experiments, Dr Punzmann said.

This is the part that surprises me. Having once been a boy playing in a bathtub, I'm pretty sure you can make waves do anything if you throw the water around the right way. Do an interference pattern the right way and you can make any shape in 2 + time dimensions. You'd think this would be easy to describe.

"It's one of the great unresolved problems, yet anyone in the bathtub can reproduce it. We were very surprised no one had described it before."

In other words this.


Paging [Jean Baptiste] Joseph Fourier ...
 
2014-08-10 08:41:34 PM  
'Paging Dr. Shats. Paging Dr. Craps. Paging Dr. Pissesinhispants.'
 
2014-08-10 09:25:15 PM  
This gives me new hope for Jetson's-style flying cars in my lifetime.
 
2014-08-10 10:02:26 PM  
Well, considering the human body is made up of mostly water, I wouldn't want that thing pointed at me.
 
2014-08-10 10:31:13 PM  
I get more reaction in the bathtub with bubbles than I do with wave action.
 
2014-08-10 10:35:22 PM  
so ...if she made of water.....and we point a beam at her.....we can transport her !
 
2014-08-10 10:49:56 PM  
Parlor tricks. I wanna see what this tank does with a dozen apples. I wonder how much funding they've applied for for large scale testing.
 
2014-08-11 12:04:41 AM  
tfwiki.net
"I must try to find the tractor beam... Ah! there it is!  Found it!"
 
2014-08-11 12:34:42 AM  
s14.postimg.org
 
2014-08-11 12:52:52 AM  

Fark like a Barsoomian: As yet no mathematical theory can explain these experiments, Dr Punzmann said.

This is the part that surprises me. Having once been a boy playing in a bathtub, I'm pretty sure you can make waves do anything if you throw the water around the right way. Do an interference pattern the right way and you can make any shape in 2 + time dimensions. You'd think this would be easy to describe.

"It's one of the great unresolved problems, yet anyone in the bathtub can reproduce it. We were very surprised no one had described it before."

In other words this.


But who takes a bath after age 5 or 6?  I mean unless it's a big tub and there's someone in it with you and you're not really paying attention to the interference patterns of the waves.

0.tqn.com

Or maybe there isn't room for waves...
 
2014-08-11 08:24:15 AM  
Maybe this could used to clean up the garbage islands in the ocean? Set up autonomous buoys maybe?
 
2014-08-11 09:11:36 PM  
How is this different than a billiards pro doing trick stots en masse?
 
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