Jump to content




Welcome to Unexplained Mysteries! Please sign in or create an account to start posting and to access a host of extra features.


- - - - -

Time reversal technique sheds light on future


  • Please log in to reply
1 reply to this topic

#1    Render

Render

    Psychic Spy

  • Member
  • PipPipPipPipPipPipPipPip
  • 2,080 posts
  • Joined:23 Nov 2009
  • Gender:Not Selected

Posted 25 February 2013 - 09:22 AM

Quote

(Phys.org)—Imagine a cell phone charger that recharges your phone remotely without even knowing where it is; a device that targets and destroys tumors, wherever they are in the body; or a security field that can disable electronics, even a listening device hiding in a prosthetic toe, without knowing where it is.

While these applications remain only dreams, researchers at the University of Maryland have come up with a sci-fi seeming technology that one day could make them real. Using a time-reversal technique, the team has discovered how to transmit power, sound or images to a nonlinear object without knowing the object's exact location and without affecting objects around it. Their work, "Nonlinear Time Reversal in a Wave Chaotic System," was published in the Feb. 7 issue of the Physical Review Letters journal. "That's the magic of time reversal," says Steven Anlage, a university physics professor involved in the project. "When you reverse the waveform's direction in space and time, it follows the same path it took coming out and finds its way exactly back to the source."


http://phys.org/news...ors-future.html


#2    StarMountainKid

StarMountainKid

    Cheese

  • Member
  • 3,980 posts
  • Joined:17 Feb 2007
  • Gender:Male
  • Location:Star Mountain, Corporate States of America

  • We have problems because we stray from what is innocent and pure.

Posted 25 February 2013 - 08:59 PM

All this is new to me but interesting. This quote explained the process for me.

Quote

Phys.org)—In spite of its name, the time reversal of a wave doesn't involve sending the wave back in time, but for scientists, the process is almost as compelling. After a source generates a wave, the wave propagates through a medium and is recorded at a few points in its surroundings by an optical method. Then, the wave is re-emitted in a way so that its energy focuses back at the initial source position, as though the wave were being played backwards. Because the wave precisely retraces its original path as it travels back to its source, its mathematical description is reversed in time but is otherwise exactly the same.
http://phys.org/news...s-reversal.html

Edited by StarMountainKid, 25 February 2013 - 09:00 PM.

The acceptance of authority does not lead to intelligence.
A mind untouched by thought...the end of knowledge.
My credentials: http://www.unexplain...ic=87935&st=225




1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users