The phonograph was invented in 1877 by Thomas Edison. While other inventors had produced devices that could record sounds, Edison’s phonograph was the first to be able to reproduce the recorded sound. His phonograph originally recorded sound onto a tinfoil sheet phonograph cylinder, and could both record and reproduce sounds. Alexander Graham Bell’s Volta Laboratory made several improvements in the 1880s, including the use of wax-coated cardboard cylinders, and a cutting stylus that moved from side to side in a “zig zag” pattern across the record. At the turn of the 20th century, Emile Berliner initiated the transition from phonograph cylinders to gramophone records: flat, double-sided discs with a spiral groove running from the periphery to near the center. Other improvements were made throughout the years, including modifications to the turntable and its drive system, the needle and stylus, and the sound and equalization systems.
For more on Thomas Edison, read The Wizard of Menlo Park.
|Even the Shopping Cart Needed Marketing|
|Entrepreneurs Take Too Many Showers|
|Science is Cool, Even the Science of Christmas Trees|
|3D Print Your Unborn Baby|
|How to Attract Better Clients|
|The Economics of North Dakota’s Oil Boom|
|What is 3D Printing?|
|They Started A Business Around Their Fashionable Dog|
|Sh*t Entrepreneurs Say|
|Unexpected Products by Brands We Trust|