Gadget Freak John Tindall uses his cannon to demonstrate the noise level of a sonic boom. In this clip from a History Channel UFO Hunters episode, Tindall uses his cannon to replicate a sonic boom. On the third try, the massive sound actually blows the cannon apart.
This Gadget Freak Review looks at an affordable plug-and-play printer, a 3D printer that was hacked by a group of French design students to create real tattoos, and an analog camera that was built using 3D-printed and laser-cut parts.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.