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Recent research has uncovered a remarkable ability to manipulate and control electromagnetic fields to produce effects such as perfect imaging and spatial cloaking...To achieve spatial cloaking, the index of refraction is manipulated to flow light from a probe around an object in such a way that a ‘hole’ in space is created, and the object remains hidden.
Alternatively, it may be desirable to cloak the occurrence of an event over a finite time period
t's still preliminary, but Alexander Gaeta, a physicist at Cornell University, and colleagues are making strides in this direction. He and colleagues report their feat in the journal Nature.
They're not just talking about a device that would make an object invisible. Instead, the idea behind space-time cloaking is, for a brief period of time, to make an event undetectable by light
Originally posted by Uncinus
This particular technique is currently limited to events that last less than 110 nanoseconds (like very very short laser pulses), and there's a hard limit of 120 microseconds (0.00012 seconds), based on the speed of light. So it's not particularly useful on a macro level.
No they could'nt because I would have one too and no one could see ME! So there you go Mister Smarty Pants
Originally posted by jNormal
It would be silly if this was available in every day life.
People would just be able to murder, rob and commit other crimes and get away with it?
We characterize the performance of our temporal cloak by detecting the spectral modification of a probe beam due to an optical interaction and show that the amplitude of the event (at the picosecond timescale) is reduced by more than an order of magnitude when the cloak is turned on. These results are a significant step towards the development of full spatio-temporal cloaking.
Originally posted by Uncinus
This particular technique is currently limited to events that last less than 110 nanoseconds (like very very short laser pulses), and there's a hard limit of 120 microseconds (0.00012 seconds), based on the speed of light. So it's not particularly useful on a macro level.
Originally posted by Wrabbit2000
Welcome to the brave new world of what we aren't trusted to see or know about.
Now...how long have they really had this technology and how long has it been fully functional and integrated into real world systems? When we hear the answer to that, I'll feel like we may actually be reaching a point of honesty from TPTB.
Until then... Look skyward and listen. They can't cloak sound quite as well, apparently...and we CAN hear the things, even if we can't see them. The truth is out there alright. It's flying right over our heads sometimes...and probably much lower than we'd be at all comfortable in knowing.
Pentagon Scientists Use ‘Time Hole’ to Make Events Disappear
Soldiers could one day conduct covert operations in complete secrecy, now that Pentagon-backed physicists have figured out how to mask entire events by distorting light.
A team at Cornell University, with support from Darpa, the Pentagon’s out-there research arm, managed to hide an event for 40 picoseconds (those are trillionths of seconds, if you’re counting). They’ve published their groundbreaking research in this week’s edition of the journal Nature.
This is the first time that scientists have succeeded in masking an event, though research teams have in recent years made remarkable strides in cloaking objects. Researchers at the University of Texas, Dallas, last year harnessed the mirage effect to make objects vanish. And in 2010, physicists at the University of St. Andrews made leaps towards using metamaterials to trick human eyes into not seeing what was right in front of them.