The Turn Of The Century Electrotherapy Museum http://www.electrotherapymuseum.com 30 watt Tesla Coil Producing Phantom Streams Here is the setup.  Behary 30W Tesla Coil Tuner with 9" 150T Pancake Coil Phantom Streams can be felt distinctly at a distance of 12" from this coil, and just barely perceived at a distance of 16". They can be seen clearly or distinctly with the naked eye at a distance of around 8"-10". The Oscilloscope Tube shows some strange behaviour at 12" from the sphere! These are the actual sparks produced from the metal ball - only 3" long. The Phantoms can be seen faintly here extending outward. Up close these Phantom Streams get interesting.  They produce a thick (roughly 3/16" thick) rod-like discharge to a piece of metal held in the hand. Distinct bright spots on the rod can be seen in this photo where the phantoms strike.  With the naked eye they have a very distinct shape, the photo shows rather a blur of many moving streams.  But the target spots remain very clear in this photo. Here are several spots can be seen. A faint spark appears here. Note how the discharges tend to form in clusters If only everyone could be here to see these in person.  I am surprised how efficient this crude and simple setup is for their production.  The effect in person is quite dramatic!