Is there any object more alluringly mysterious in the cosmos than black holes? How about their mirror image, white holes? Put the two together, and you just might have an intriguing concept for a unique kind of laser -- one that a team of Scottish physicists think they might actually be able to build in the lab, using analog versions of white holes and black holes.
A black hole can be visualized as a large funnel with a long throat. If you “cut” the throat and join it to a second black hole that has been flipped over (a white hole), you get an hourglass shape, with a thin filament connecting each end. Technically it's known as an Einstein-Rosen bridge (named for Albert Einstein and his collaborator, Nathan Rosen), an early theoretical incarnation of a wormhole.
A black hole can be visualized as a large funnel with a long throat. If you “cut” the throat and join it to a second black hole that has been flipped over (a white hole), you get an hourglass shape, with a thin filament connecting each end. Technically it's known as an Einstein-Rosen bridge (named for Albert Einstein and his collaborator, Nathan Rosen), an early theoretical incarnation of a wormhole.
