Summary: Have you had a burning desire to trap light inside a knot? Neither have I, but it looks as if this is becoming possible. Scientists "have discovered a new family of solutions to Maxwell's equations that are knots of light that do not disperse or lose their specific topological properties as they propagate. The researchers say such knots, if made for real, could be used to trap atoms or create similar knots in plasmas or quantum fluids." It ties by brain in knots just thinking about it. While this seems really cool (and the conceptual image looks awesome) I don't think it will be incredible to me unless they tell me that this can be used to make a real life light saber.
Physics World
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