Physicists may have solved the mystery of levitation, figuring out how to make objects, and even people, float in midair. How? By countering the Casimir force, that strange phenomenon holding molecules together. Now British physicists are figuring out how to reverse that effect, making objects repel each other, and hope to first use the technique to reduce friction in nano machines, and someday maybe even levitate people. The discovery could ultimately lead to frictionless micro-machines with moving parts that levitate, in principle at least, the same effect could be used to levitate bigger objects too, even a person.
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