Page "Clairvoyance" Paragraph 20

In order to explore the nature of remote viewing channel, the viewer in some experiments was secured in a double-walled copper-screened Faraday cage.

Although this provided attenuation of radio signals over a broad range of frequencies, the researchers found that it did not alter the subject's remote viewing capability.

They postulated that extremely low frequency ( ELF ) propagation might be involved, since Faraday cage screening is less effective in the ELF range.

Such a hypothesis had previously been put forward by telepathy researchers in the Soviet Union.