One Laser + Hourglass + Circuits = Crazy Gijs Noise Generator

Now, here’s the way to do an analog noise generator oscillator: use grains of sand. As falling sand interrupts the flow of a laser to a light-sensitive sensor (a photodetector), the circuit produces random oscillations of sound. It’s the latest brilliant creation of mad Dutch scientist Gijs Gieskes, the industrial designer-turned-musician whose inventions often center […]