This is a real, working, Star Trek-style Tricorder

Upon holding the Tricorder near a power adapter plugged into the wall, you could see the oscillating magnetic fields on the magnetometer visualization. There they were, slowly bouncing back and forth, right in front of you… More educational discoveries came quickly — from finding all the heat leaks from different building materials in my graduate […]

This is a real, working, Star Trek-style Tricorder