Terry Blanton wrote: >> From: Harry Veeder> > >>> In reality the wavelength (and consequently momentum) of the reflected >>> photon >>> is slightly less than the wavelength ( momentum ) of the incoming photon. >> >> That should say "slightly longer" instead of "slightly less"! > > But, but, but, that means the sail should be black not reflective, right? >
If it is reflective you get more "bang for the buck". Harry
