AETHER
Aether
According to ancient and medieval science aether, also spelled æther or ether, is the material that fills the region of the universe above the terrestrial sphere. The concept of aether was used in several theories to explain several natural phenomena, such as the traveling of light and gravity. In the late 19th century, physicists postulated that aether permeated all throughout space, providing a medium through which light could travel in a vacuum, but the presence of such a medium was disproved in the Michelson-Morley experiment.The above text is a snippet from Wikipedia: Aether (classical element)
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aether
Noun
The above text is a snippet from Wiktionary: aether
and as such is available under the Creative Commons Attribution/Share-Alike License.