posted on Jun, 29 2004 @ 05:19 PM
I never knew this, if I read correctly, US navy and Russia scientists created a plasma antenna.
"electromagnetic radiation and plasma fields were studied for many years in Russia, the United States and around the world. Among recent achievement
in this area is a "plasma stealth" antenna developed by the US Navy for use on LO aircraft. The system employs a U-shaped glass tube filled with
low-pressure gas (something like a fluorescent tube). This antenna is energized and acts as a highly-directional, electronically steered
transmitter/receiver. When de-energized, the antenna is virtually transparent to hostile electromagnetic signals. One of the problems with such a
system is its vulnerability to resonant signals. For more information click here."