Etheric force

Etheric force is a term Thomas Edison coined to describe a phenomenon later understood as high frequency electromagnetic waves—effectively, radio.

Edison, with this small amount of evidence, announced that it was "a true unknown force",[2] since he believed that the spark transmitted electricity without carrying any charge.

He was also interested in finding new forces as a means for providing scientific explanations for spiritualist, occult and other allegedly supernatural phenomena following his disenchantment with Helena Blavatsky's Theosophy.

Edison's apparatus consisted of a spark gap vibrating at a high frequency powered by batteries and connected to tin foil sheet about 12 by 8 inches, effectively acting as an antenna.

[4] Thomas Edison announced the discovery, which he called etheric force, to the press and reports began to appear in Newark newspapers from November 29, 1875.

An etheric force machine, also known as the Keely Disintegrator. In storage at the American Precision Museum