If I have a beaker and it is being lined with silver. I use this in an experiment and it is essential that as little heat is lost to the surroundings as possible. How effective would this be? Can I use the logic that since light passes through the transparent beaker, infra-red radiation should behave likewise? and I am I right to say that a significant amount of heat is being lost as IR radiation due to a transparent beaker? Thanks alot.