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I wonder if there are any high viscosity, highly reflectivity fluids that would allow a tilt without shifting.
This brings up a question I have had for a while, and that is are metal mirrors practical at low thicknesses if backed with a supportive substrate? In other words, could you create a metal mirror using this method and then silver it, say using immersion, to overcome the problems associated with crystallisation? Or will using a metal introduce thermal expansion/contraction issues?
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