A phonograph record (also known as a gramophone record, especially in British English), a vinyl record (for later varieties only), or simply a record or vinyl is an analog See more

Manufacture of disc records began in the late 19th century, at first competing with earlier cylinder records. Price, ease of use and storage made the disc record dominant by the 1910s. The standard format of disc records became known to later generations as … See more

CBS Laboratories had long been at work for Columbia Records to develop a phonograph record that would hold at least 20 minutes per side.
Research began in 1939, was suspended during World War II, and then resumed in 1945. See more

Increasingly from the early 20th century, and almost exclusively since the 1920s, both sides of the record have been used to carry the grooves. Occasional records have been issued … See more

The phonograph record was the primary medium used for music reproduction throughout the 20th century. It had co-existed with the See more

Early speeds
Early disc recordings were produced in a variety of speeds ranging from 60 to 130 rpm, and a variety … See more

Types of records
The usual diameters of the holes on an EP record are 0.286 inches (7.26 mm).
Sizes of records in the United States and the UK are … See more