Bessel beam TRACTOR BEAM technology

0
Posted May 25, 2012 by Johnny2x in Science

Another example of us getting close to technology that was once considered completely Sci-Fi.

from gizmag.com

Bessel beam “tractor beam” concept theoretically demonstrated

Researchers at Singapore’s Agency for Science, Technology and Research (A*STAR) have now proven the theory behind the concept, demonstrating how a tractor beam can be realized in the real world – albeit on a very small scale.

Haifeng Wang at the A*STAR Data Storage Institute and colleagues studied the properties of Bessel beams, which, unlike normal laser beams, don’t diffract or spread out as they propagate. While light will usually be scattered backwards when a laser beam hits a small particle in its path, pushing the particle forward, the A*STAR team showed theoretically that light from a Bessel beam scatters off particles that are sufficiently small in a forward direction. This means that the particle is pulled back towards the observer.

read more here

Gizmag.com’s source: Wired

(172)

Comment with Facebook

About the Author

Johnny2x

John created the HowsYourRobot.com just because he cares about each and everyone of you. He likes science, technology, movies, and music. He also likes long walks in the park but only at night and in most dangerous park he can find AND he discovered the internet while playing in his back yard as a child. Some of this is true and some of it is not.

0 Comments



Be the first to comment!


Leave a Reply

 
Upcoming Movies
 
 


%d bloggers like this: