A: Thomas Paine believed that the American army would become the strongest in the world, that America would achieve independence from Britain with a strong ar... Full Answer > Filed Under:
How DVDs Work. DVDs are of the same diameter and thickness as CDs, and they are made using some of the same materials and manufacturing methods. Like a CD, the data on a DVD is encoded in the form of small pits and bumps in the track of the disc. A DVD is composed of several layers of plastic, totaling about 1.2 millimeters thick. Each layer is created by injection molding polycarbonate plastic.
A CD drive is an optical drive (a piece of hardware that reads Compact Discs). A DVD drive is an optical drive (a piece of hardware that reads DVD Discs). There are lots o â¦ f optical drives that can read both DVDs and CDs, some can even 'burn' information onto blank discs. ___________________ From: TheAllKnowingEye.