What was the key function of the phonograph, which Edison invented in 1877?
Answer
Recording and reproducing sound
The phonograph enabled the capture and replay of human voice and music, ensuring that sound was no longer ephemeral.

Related Questions
What was Thomas Edison's laboratory in Menlo Park recognized as being the first of its kind?What characterizes the primary focus of Edison's contribution to modern life?In what year did Edison open the Pearl Street Station in New York City, marking a major utility transition?What aspects defined the lighting methods, such as gas or candles, used before Edison's electrical system?What was the key function of the phonograph, which Edison invented in 1877?What philosophy did Edison express when discussing his numerous unsuccessful experiments?What was the primary composition of the team Edison assembled at Menlo Park?What aspect of Edison's work best illustrates his focus on systemic improvement over isolated invention?What contribution did Edison's work on the Kinetoscope help establish?According to the text, what was the massive, uncalculated boost to well-being derived from electric light compared to whale oil lamps in 1870?