Researchers from the City University of New York’s Advanced Science Research Center have finally observed time reflections after decades of searching.
Walk through a maze of mirrors, you’ll soon come face to face with yourself. Your nose meets your nose, your fingertips touch at their phantom twins, stopped abruptly by a boundary of glass.
Most of the time, a reflection needs no explanation. The collision of light with the mirror’s surface is almost intuitive, its rays set on a new path through space with the same ease as a ball bouncing off a wall.
For over sixty years, however, physicists have considered a subtly different kind of reflection. One that occurs not through the three dimensions of space, but in time.
Now researchers from the City University of New York’s Advanced Science Research Center (CUNY ASRC) have turned the theory of ‘time reflections’ into practice, providing the first experimental evidence of its manipulation across the electromagnetic spectrum.
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“This has been really exciting to see, because of how long ago this counterintuitive phenomenon was predicted, and how different time-reflected waves behave compared to space-reflected ones,” says physicist Andrea Alù, founding director of the CUNY ASRC Photonics Initiative.
Put aside thoughts of TARDIS-like technologies rewriting history. This kind of time reflection is even weirder. And, it seems, actually possible after all.
The effect of this reflection in time isn’t going to rip a hole in reality. But It will shift the frequency of the wave, in ways technology could exploit across varied fields like imaging, analogue computing, and optical filtering.
During an interview with late-night talk show host Stephen Colbert, Steven Spielberg said that UFOs are humans time-traveling.
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