Meet Edison's Tinfoil Phonograph from 1877
Why the open web links it
Demonstrates Edison's 1877 tinfoil phonograph, the first device to record and play back sound.
Linked by 5 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including history.com, openculture.com, imao.us, doornbusch.net, mrnedved.com.