disc articles
Who invented the device that successfully used flat discs for recording and playback?
What was the fundamental difference in groove movement between Berliner's Gramophone and Edison's earlier phonograph?
What was the primary technological advantage of the flat disc format over the cylinder format for replication?
What was the initial playback speed (rpm) for the very first iterations of the Berliner Gramophone?
What naturally occurring resin were the initial Berliner Gramophone discs typically made from?
Which company did Emile Berliner establish in the United States to market his device?
Which European licensee became highly successful and kept the name 'Gramophone' synonymous with recorded sound in regions like the UK?
What foundational physical geometry established by Berliner remained largely unchanged through the shift to vinyl LPs?
What standardized speed quickly superseded the initial 30 rpm speed for commercial use?
In the United States, what entity did Berliner's original company eventually evolve into or merge with?
When was Thomas Edison’s phonograph patented?
How was the sound variation traced on Edison's early wax cylinders?
What was the fundamental difference Berliner introduced regarding the groove cut on his disc?
What material were Berliner's initial flat discs manufactured from before durability improvements?
In what year did Emile Berliner successfully demonstrate his flat disc player, the Gramophone?
Approximately how many revolutions per minute (rpm) did the early, seven-inch Gramophone discs revolve at?
What durable resinous substance, secreted by the lac insect, replaced zinc for consumer disc use?
What manufacturing shift was the single most important element separating the gramophone from the phonograph?
By what year did the Columbia Phonograph Company, historically a cylinder proponent, begin marketing its own disc phonographs?
What major improvement did Eldridge R. Johnson implement in the apparatus, making it more user-friendly?
Which inventor founded the Deutsche Grammophon company in Germany?