They are made of vinyl.
GO DISCS GO DISCS
by puting it on a paper and writing record on their
Discs are made of fibrocartilage.
Yes, you can play picture discs on a record player! Although some collectors just collect them for collectibility sake and never play them. It is also known that picture discs have relatively poor sound quality as there is less vinyl applied to the disc due to the picture image being on it. You can play them on a record player and it will not cause any damage to the picture disc, provided you have a good working record player.
Its the same man.
fibro cartilage
Compact discs.
Optical Discs
The causes of discs leading to back bulges is the application of heat to the hard plastic vinyl. The heat reacts on the vinyl and causes the back of the record to bulge. Many crafters have made bowls from the vinyl that was softened when the heat was applied and the back bulges occurred.
small discs of cartilage
The intervertebral discs are made of outer annulus fibrosus, which is basically fibrocartilage.
Thomas A. Edison recorded his voice on a piece of tinfoil in 1877. In 1889 Edison and Columbia began to sell cylinders. In 1892 Berliner began to sell discs. These are the first commercial records.