Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
×
Science

Laser Light Re-creates 'Black Holes' in the Lab 245

yodasz writes "The New Scientist reports that a team of researchers from the UK were able to recreate a black hole's event horizon in the lab by firing a laser pulse down an optical fibre. The team's observations confirm predictions made by cosmologists and now they are trying to prove Hawking's hypothesis of escaping particles, dubbed Hawking radiation. 'The first pulse distorts the optical properties of the fibre simply by traveling through it. This distortion forces the speedy probe wave to slow down dramatically when it catches up with the slower pulse and tries to move through it. In fact, the probe wave becomes trapped and can never overtake the pulse's leading edge, which effectively becomes a black hole event horizon, beyond which light cannot escape.'"
This discussion has been archived. No new comments can be posted.

Laser Light Re-creates 'Black Holes' in the Lab

Comments Filter:
  • Am I slow? (Score:2, Insightful)

    by TheGreatHegemon ( 956058 ) on Thursday February 14, 2008 @01:37PM (#22422492)
    I'm not a physicist by any means, but I thought Hawking radiation had something to do with the force of gravity at the event horizon. This seems to me is just a bending of light.
  • by SecurityGuy ( 217807 ) on Thursday February 14, 2008 @01:44PM (#22422602)
    Not to be picky, but you do know there's a little bit more to the event horizon of a black hole than the fact that light can't get out of it? Let's not confuse interesting optical effects with singularities. They are...different.
  • Re:Am I slow? (Score:3, Insightful)

    by orclevegam ( 940336 ) on Thursday February 14, 2008 @01:50PM (#22422726) Journal
    Yeah, I'm no physicist either, but I don't quite follow this. They haven't simulated a black hole at all, just the optics of its event horizon.

    Artificial event horizon != Artificial black hole.

    Somehow I highly doubt that even if they can get the fiberoptics to 1000 degrees centigrade and perform this experiment that they'll get any hawking radiation out of it.
  • Re:Sounds safe (Score:4, Insightful)

    by chill ( 34294 ) on Thursday February 14, 2008 @02:40PM (#22423546) Journal
    They aren't simulating a black hole, the title is misleading. They're simulating the optical properties of a black holes event horizon. Subtle but very important difference.

    Yeah, your way of describing it doesn't generate NEAR as many hits on the ads...um, article.
  • by darkvizier ( 703808 ) on Thursday February 14, 2008 @02:47PM (#22423666)

    FTA:

    It should also be possible to use the artificial event horizon to help test whether anything can escape from a black hole. In the 1970s, Stephen Hawking predicted that hot black holes could radiate particles, dubbed Hawking radiation, but it's tough to check this using telescopes, because they'd be swamped by noise. The team calculates that their laser black hole shares this property, and that it will "radiate" photons if it heats up to about 1000 degrees centigrade.

    This makes me wonder how they're differentiating between light produced by their optics cable being on fire, and falloff from the laser. Or do optic cables not ignite at 1000 degrees centigrade? Regardless, it seems that there would be conflicting noise in a (presumably) non-vaccuum, lighted environment.

  • by severoon ( 536737 ) on Thursday February 14, 2008 @05:00PM (#22425688) Journal

    After a cursory glance thru TFA, it sounds like light waves are just interfering in a way that prevents the lagging, faster wave from propagating past the slower, leading wave. Can any physics people out there explain how this could possibly be interpreted as "we created a black hole in a lab environment"?

  • Re:Black Hole (Score:3, Insightful)

    by arminw ( 717974 ) on Friday February 15, 2008 @02:38AM (#22431212)
    ... Or do you think that they must be being suppressed by someone.....

    Sort of, similar to the way the scientific establishment has suppressed radical ideas until the later, sometimes much later became mainstream.

    Scientists are human and as such often do care for dogma more than data. This always been and will always be.

    Presently, mainstream cosmological theories largely ignore the electric force as a major, often dominant factor in the operation of the large scale universe. There are two forces at work in the large scale universe. One is gravity and the other is the electric interaction. The latter is mostly ignored in today's cosmological theories. This is why modern space probes deliver so many puzzling "surprises" that have no good explanation if the electric interaction is ignored.
  • by pablochacin ( 1061488 ) on Friday February 15, 2008 @10:23AM (#22433962)
    I wish people would stop posting comments about New Scientist not been a credible source of news. WE ALREADY KNOW THAT. And, even if you don't believe this, WE CAN DISCERN, WITHOUT YOUR HELP, about the credibility of the ULTIMATE source New Scientist is citing. Haven't you notice that some news refers to articles in credible sources?

An authority is a person who can tell you more about something than you really care to know.

Working...