What if I told you that you can get rid of your headphones and still listen to music privately, just by shooting lasers at your ears? The trick here is something called the photoacoustic effect. When ...
The mirror in a laser cutter moves along an X Y axis. An Etch A Sketch moves its stylus along an X Y axis. Honestly, this laser cutter with Etch A Sketch controls is so obvious, we’re shocked we haven ...