The Rise and Fall of the Record Industry

In 1948 an invention from Dr. Peter Goldmark would make a huge impact on the recording industry. He devised a way to create micro grooves on vinyl a type of PVC plastic. And these micro grooves allowed for a couple of really big advantages. It was possible to create long playing or LP albums and you could reduce the rotational speed to 33 and one third rotations per minute without an appreciable dip in audio quality. So that meant that a disc could hold more than 20 minutes per side.