Very true. This is for an experiment with a controlled environment, though, so hopefully shrinkage, temperature, and moisture will be controlled and measured.
Thanks, but we're trying to replace a small open air gap with epoxy in order to hold two materials together, but we still need to maintain a refractive index of air for the optical system to work unchanged.
Does anyone know if an optical epoxy exists with a refractive index as close to air as possible? I'm not even sure an epoxy like this exists, but maybe someone out there knows better. Thanks!
