Gramophone disc
AKA
78s, Durinoid, Edison Diamond Disc, lacquer discs, Phonographic disc, record, shellac records, victrola
Era
1887–1950s
Format
analog
Developed by
Emile Berliner
(Max) Capacity
12": 3 minutes (per side)
Size
7", 10", 12", 16"
Fun facts
- Earlier discs in this format were made from a shellac (a resin secreted by Iac insects) combined with other materials
- Early recordings differed in speeds, ranging from 60-130 revolutions per minute (rpm), but 78 rpm became the industry-wide standard by the mid-1920s until the introduction of the microgroove disc in the 1940s
- This format was eventually replaced by the microgroove disc, introduced by Columbia in 1948
