Phonograph Cylinder

A phonograph cylinder is an early device for recording and playing back sound. Invented in the late 19th century, it consists of a cylindrical object coated with a material that captures sound vibrations. During recording, sound is converted into mechanical vibrations that etch a groove on the cylinder's surface. When played back, a stylus traces this groove, converting the vibrations back into sound. Phonograph cylinders were among the first commercial methods of capturing audio, paving the way for modern sound recording technology. They are recognized for their historical significance in the development of audio recording.