Hi Andy, > Anybody understand the concept of "wireless tranmission of energy" > that he discovered? It is frequently claimed that he "lit 200 light bulbs from 25 miles without wires". I would love to know more about this claim. Myself I recon it's an "urban myth". Having experimented with "Earth Current Communications", I well know that you can barely detect a signal at 25 Km, let alone light a globe with it..... Interested in what others know about Telsa and "Terrestrial Stationary Waves"...... My crude attempts to figure earth attenuation is at http://www.qsl.net/vk3gjz/earth/Range/range.html ..................... Zim