Re: Nuclear Isomer Decay: A Possibility for Breakthrough Space

[Thomas Gleich Harrison <tomh@jove.acs.unt.edu>]

Good explanation on the webb site address and from Otto Raabe,  good
reading so I stand corrected on direct momentum transfer. I've learned one
thing.....read on before responding...... I could learn somehthing... !!
Thanks.........'

Tom Harrison
Engineering Physics
University of North Texas  


On Sat, 3 Apr 1999, Thomas Gleich Harrison wrote:

> 
> well lets face it.. the workings of Crooke's Radiometer is a scientific
> mystery. But all of the above are probably correct. Electrons clearly must
> absorb the radiant energy and thus aquire added momentum. If the light
> energy is such that the work function can be overcome, then of course
> electrons will leave the surface. Or if the thermal distribution can be
> shifted slightly upscale then more electrons will exceed the threshold for
> escape and thus more will leave the surface then if the temp is lower. 
> My original point is that like energy, momentum can be nether created nor
> destroyed, just transferred and partitioned. So if electrons leave the
> surface with momentum, then the photons striking the surface had to have
> initial momentum.........  I think !!!
>  
> Tom Harrison
> Physics Dept
> University of North Texas
> 
> 
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