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kerr cell

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has anyone heard of these, does anyone know if/how they work? if I used one as a shutter what would happen when the shutter is closed? could it contain a beam? also what happens to the light that doesnt escape does it reflect back in to the cavity or would it be absorbed as heat?
 





I have two of these that I am going to be selling soon, they are filled with benzene I think and work like a liquid crystal display works, thru polarization. As far as heat absorbtion, It is a clear liquid and any heat absorbed would be small.
They use high voltage to (i think) circularize the polarization.
I estimate they hold about 6 ounces of fluid. I will post pictures later on today.

Mine are tested and worked. I got them from Dan Lauritsen, a person who I wish I spent more time with. R.I.P.
 
so they do reflect the light back in then?
how much for them, I am still just doing preliminary investigations, so it may be a while before i make a purchase,

do they need refilling ? also what is the aperture radius & total radius & total weight pls>?
 


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