By reflecting a laser beam from a specially designed hologram (shown here as the colored circle), physicists created knots of dark filaments (represented by the colored knot). Credit: Mark Dennis.From Live Science:
Like your shoelaces or electrical cords, light can get twisted into knots. Now, scientists have used a computer-controlled hologram and theoretical physics to turn a light beam into pretzel-like shapes.
The twisted feat not only led to some pretty cool images, but the results have implications for future laser devices, the researchers say.
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