You can't imagine the sheer joy I got from your last answer re radio waves. Are you aware of the work being done using radio waves & imaging. Also about the radio "bombardment" chambers they are using at U of W Hosp. for healing? Also you said that the PD surgeries use radio waves, can this be explained to someone like me with zilch techno background. Are you aware of a link that talks about the "how" these operations work? I thought they used electrical current, not radio waves. Is that why people can tell if their device is on by placing a radio next to the device to tell them if it is on? Sorry Bob, but I got the "yearning for the learning"! David Meigs aka: Pappy [log in to unmask]