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 Aug 06, 2007 - 08:00 AM - by Michael
* Levitation "solved"

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Personal Stuff/Random News
The Telegraph reports on scientists who've figured out how to reverse the casimir effect.

For those who don't know, the casimir effect could also be summed up as "friction."

The force is due to neither electrical charge or gravity, for example, but the fluctuations in all-pervasive energy fields in the intervening empty space between the objects and is one reason atoms stick together, also explaining a ?dry glue? effect that enables a gecko to walk across a ceiling.

Now, using a special lens of a kind that has already been built, Prof Ulf Leonhardt and Dr Thomas Philbin report in the New Journal of Physics they can engineer the Casimir force to repel, rather than attact.

 

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