According to Images Scientific Instruments’ description, they are “committed to bringing the best electronics and science equipment to students, educators, creative professionals, and consumers around the world.” Although they have several interesting products available, perhaps their most interesting kits are for a Geiger counter, and a plasma arc speaker.
As you might suspect, the DIY Geiger Counter kit is used to detect radioactivity, and per it’s description “performing nuclear experiments.” It’s able to give an audio signal and blink its LED light when it detects a radioactive particle. So, in other words, you probably don’t want to see an output from it most of the time.
You’ve probably seen some version of a plasma speaker, but I don’t think I’ve ever seen a kit for one. This assembly is able to take input from a standard 3.5mm audio jack, then through electronics including a flyback transformer, allows you to “see” your music in high voltage electricity. Per the video below, the sound might not satisfy most audiophiles, though it’s certainly more entertaining visually!
