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.
CDs and DVDs are not the same format. A CD drive can only read CD discs. A DVD drive can read both DVD and CD discs. Additionally, Blu-Ray movies requires a Blu-Ray drive which can also read DVD and CD discs. #2 - You need a program to play back the DVD movie. I prefer using Media Player Classic (Google it). CD drive can only read CD discs. A DVD drive can read both DVD and CD discs. Additionally, Blu-Ray movies requires a Blu-Ray drive which can also read DVD and CD discs. #2 - You need a program to play back the DVD movie.