I Star
21.99
The disc is a thin plastic base material coated with iron oxide. This oxide is a ferromagnetic material, meaning that if you expose it to a magnetic field it is permanently magnetized by the field.
A cylinder is a long round object with flat circular ends.
disc players are very common. the play music cds. they spin the CD round and round very quickly while reading the almost unseen inscription on the back of the CD.
disc
you go to a game shop near you and the should have a disc repair machine to fix the disc this should only cost round about 2-3 pounds.
It's because of the way they are read. The disc spins whilst a stationary laser reads the information. If the disc were any shape other than round, the laser or disc would have to move in different directions in order to read the entire disc. This would be a complicated and expensive process for DVD player manufacturers.dvds are supposed to be round...there is a thing in the DVD player to make the DVD play by spinning it. the fastest shape that can spin is a circle. with other shapes, the spinning is slower and the quality will get lesser. so, DVD's are round.
Optical disc
A flat round portable metal disc with a plastic coating is likely a portable hard drive. This device is used to store and transfer digital information such as documents, photos, and videos. The plastic coating serves as protection for the metal disc inside.
a chocolate bar is needed to put inside it Also a rimbo disc is needed
Optical Disk