MAKE's Phil Torrone went to Japan to met with the folks at Gakken ("Sophisticated Science Kits for Adults") and shot this fun video of the Edison-Style cup phonograph kit.
From Gakken's Sophisticated Science Kit for Adults, this replica kit uses the same technology that Thomas Edison used, replacing Edison's waxed pipe and stylus, the kit uses a plastic cup and a needle, but the end results are the same! You record your own voice on a plastic cup -- and play it back! Here's how it works, your voice vibrates the air minutely when it gets into the horn. Then the vibration is conducted to the needle and is translated into a wavy movement of the needle and carves a groove onto the cup.Link
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. Come and hear Mark speak at the ALA conference in Chicago on July 1.