But there was a time when audio records were not flat — they were drums, which was how the original Edison phonograph worked. [Our Own Devices] did a video earlier showing one of these devices ...

Rolling knife sharpeners have gained a lot of popularity in the last several years because they make sharpening incredibly easy. There are plenty of companies producing their own take on these ...

In 1857, French inventor Edouard-Leon Scott came up with a device to help people get a better understanding of how sound works, that he called the Phonautograph, where a vibrating pen would ...