Laser Harp
I once saw someone playing music by breaking laser beams with his hands. I thought it was fake, but discovered it was real and made my own laser harp.
1MΩ
The Truth Meter
By Sean M. Montgomery and Ira M. Laefsky Excerpted from a Primer on Biosensing in MAKE Volume 26. When you experience an arousing stimulus, like an evocative question, a startling noise, or even a disturbing thought, your body generates a variety of psychophysical responses. One of these is micro-pulses of sweat released after a 1- […]
