According to calculations done by physicists of the University of St Andrews the normally attractive Casimir force between two surfaces can be made repulsive. The repulsive force may even be strong enough to levitate a tiny mirror. In theory the discovery could be used to levitate bigger objects too.
I love this stuff! When I first came across it I thought it was a spoof but now I believe it's legit. Fascinating. The graphic I'm sure is only for aesthetic reasons and not to demonstrate the Casimir force which works on a much smaller scale - at least for now. :-)
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