Cloaking time to create invisible events

Research from Imperial College London is now taking cloaking invisibility using metamaterials into the fourth dimension — time — creating the potential to hide whole events, so an object could move from one region of space to another, completely unseen by anyone watching.

Research published today (November 16, 2010) in IOP Publishing’s Journal of Optics explains how the propagation of light can be manipulated to create a “temporal void,” allowing undetectable moments of invisibility.

As lead author, Professor Martin McCall from the Department of Physics at Imperial College London, explains, “Our spacetime ‘event’ cloak works by dividing illuminating light into a leading part, which is sped up and passes before an event, and a trailing part, which is slowed down and passes after. Light is then stitched back together seamlessly, so as to leave observers in ignorance.”


Read article here: http://www.blacklistednews.com/index.php?news_id=11536

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Comment by Burbia on July 17, 2011 at 2:23pm


Scientists Punch a Hole in the Fabric of Time with a "Time Cloak"

Avatar for Kyle Wagner What a preposterous world we live in, where developments in invisibility cloak tech are common enough to elicit yawns. Fine, you unmovable automatons, how about a time cloak? Is that something you might be interested in?

Researchers at Cornell have designed, built and demonstrated the first "cloak" that hides events in time. The process relies on similar methods of distorting electromagnetic fields as invisibility cloaks, but it exploits a time-space duality in electromagnetic theory: diffraction and dispersion of light in space are mathematically equivalent. Scientists have used this theory to create a "time-lens [that] can, for example, magnify or compress in time."

The time cloak takes two of those lenses and arranges them so that one compresses a beam of light while the other decompresses it. That leaves the beam seemingly unchanged, but the diffraction and dispersion actually "cloak" small events in the beam's timeline. Right now, the cloak can only last for 120 nanoseconds, and the theoretical max for the current design measures just microseconds. But the prospect of being able to exist outside of time, even for just a few microseconds, should be enough to make even the most jaded tech nerd giggle at the possibilities. [Tech Review via Hacker News

http://gizmodo.com/5821246/scientists-punch-a-hole-in-the-fabric-of...

Comment by Sweettina2 on November 20, 2010 at 1:47am
Sorry, I didnt get the date posted...its from yesterday, blacklistednews. The public knowledge of the technology was published a few days ago.
Comment by Central Scrutinizer on November 19, 2010 at 5:18pm
was this around back in Sept 2001???
Comment by Sweettina2 on November 18, 2010 at 6:20pm
This is just mind-blowing!

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