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Recorded Delivery <a href=" http://bridgesventures.com/amitriptyline-generic-xanax/ ">amirol amitriptyline hydrochloride 10mg ao</a> Conventional mirrors all work in a very simple way: they block the passage of light (or sound, or water, or radio waves), and so they have no choice but to reflect. As you can imagine, the reflection is never perfect, with some energy being absorbed by the material, or scattered in different directions. For a human checking their hair or makeup, this lack of perfection doesn’t matter; but when you’re talking about reflecting lasers down a hundred miles of optic fiber, or solar power installations, these tiny imperfections can cause a huge drop in efficiency.