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Re: Another piece of the puzzle?

To Kelly,

>> Could we use polarisation as a way to eliminate the effect 
>> of a backward and forward moving beam in the same path. 
>> What if we can make it so that the forward moving beam is 
>>  horizontally polarized and the backwardmoving beam is 
>>  vertically polarized? All the ships sail? has to do is to  
>> discriminate between both kinds of
>> polarizations and thus reflect only on of the two.
>Hummm.  Could making the mesh out of long open strips, not open squares,
>effect its reactions to a polorized beam?

Yes, it would reflect or let through only one polarisation. But I still need
a  polarization changer at the retro-mirror.
So one piece is already there, now the other one...