MadSci Network: Physics

Re: Is it possible to make a radiometer chang direction and move backward?

Date: Mon Nov 2 12:58:43 1998
Posted By: Frank Berauer, Technology Transfer Engineer Microelectronics
Area of science: Physics
ID: 909528829.Ph

Try to focus a beam of light onto the back (shiny) side of the blades
in a dark room. I am not sure if this would work, but it is the only
practical possibility I see.
An impractical one is to use laser cooling on the front (black) side,
but for that you have to know the composition of the gas around the
rotor and you need a laser with the correct wavelength for this gas.

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