You may remember back in 2006 when the invisibility cloak became a reality. It was a pretty big moment and is still a hot topic in science today. But back in 2010, a reporter asked physicist Alexander Gaeta if it would be possible to create a “time cloak,” that could render entire events unreachable.
What the reporter meant was to create something that could deflect all the light beams influenced by the object to create a space where all information about an object disappears. Theoretical physicist Martin McCall proposed splitting a light beam into two segments moving at different speeds to create a disconnect.
The proposed result would be a gap of complete darkness opening up between them. The experiment would theoretically then conclude by bringing the two segments back together so that it would seem like the gap never even existed, thereby creating a “time gap.”
Alexander Gaeta got to work on the project. Has it had success? In January 2012, physicists at the University of Texas at Austin to cloak a 7 inch cylinder so that it is hidden from microwaves at every angle. Instead of causing waves of light to bend around it, like with the invisibility cloak, this “time cloak” cancels out all the microwaves bouncing off of it.