Friction on a Spinning Piece of Matter

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In our Universe rotating motion, contrary to translational motion, is defined absolutely. I examine some physical consequences of the existence of absolute rotation. One of them is a resistive torque on a rotating piece of dielectric induced by the scattering of the fluctuations of the QED vacuum. This torque rests on the estimation of the emission of angular momentum by a wave scattered by a rotating dipole. This phenomenon per se could also yield a method for cooling the rotational degrees of freedom of molecules

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