>Motion can be conjured out of thin air, according to a physicist in Israel.
>
>Alexander Feigel of the Weizmann Institute of Science in Rehovot says
>that objects can achieve speeds of several centimetres an hour by
>getting a push from the empty space of a vacuum1.
Ca paraît zozo, vu comme ça.
>The whole idea of getting movement from nothing sounds like a gift to
>advocates of perpetual-motion machines. But there's nothing in Feigel's
>theory that violates the fundamental laws of physics, so this doesn’t
>provide a way to cheat the Universe and get free energy.
Dommage !
>Instead, Feigel draws on the well-established notion that empty space
>does contain a little bit of energy. This ‘vacuum energy’ is a
>consequence of the uncertainty principle — one of the cornerstones of
>quantum mechanics.
Le 'vide' n'est donc pas si vide que ça.
Denis
