The Oscilloscope reading on the right is grounded and the reading on the left is not grounded.
The electrical readings below show what happens after someone touches the plant’s leaf. The grounded plant is barely effected by the stimulus, while the disconnected plant is significantly increased.
Earth & Grow’s Co-Founder and Electrical Engineer, Michael Corsi, explains how the Earth & Grow device works using a multimeter.
The power distribution systems around the world use 50 – 60 Hz alternating current (AC). Alternating current is foreign to all organisms’ biology and is being researched as a factor in a variety of human stress-related responses and other biological complications. (Ober, Clinton. Earthing: The Most Important Health Discovery Ever? Basic Health Publications, Inc., 2010.)