: an isomer that is a stereoisomer of a compound having two or more chiral centers and that is not a mirror image of another stereoisomer of the same compound â
A compact disc is a deceptively simple looking device considering the technology required to make it. 1  CDs consist of three layers of materials: 2  A base layer made of a polycarbonate plastic. 3  A thin layer of aluminum coating over the polycarbonate plastic. 4  A clear protective acrylic coating over the aluminum layer.
Introduction. On the surface, a compact disc looks like a gleaming mirror on one side, and some ornamental painting on the other side. I was intrigued by the amount of music a small disc could hold when I received my first CD player as a Christmas gift. Since then I have always wanted to know what makes a CD sound.