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NXwlQ TIL about the "invisible wall," an anomaly where workers encountered a strange "invisible wall" in the area under a fast-moving sheet of electrically charged polypropelene film in a factory. This "invisible wall" was strong enough to prevent humans from passing through.
JYRyV TIL A 3M adhesive tape plant accidentally created a force field of static electricity that was strong enough to prevent humans from passing through. A person near this "wall" was unable to turn, and so had to walk backwards to retreat from it.
O71Y TIL 3M accidentally created an Invisible Electrostatic Wall (Force Field) strong enough to stop a human from passing through