Aether (or ether) relates to the material which supposedly fills the entire universe. It is a concept used to understand action at a distance. Aether was described by Huygens as an "omnipresent, perfectly elastic medium having zero density", to support his wave theory of light.
Questions tagged [aether]
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How did we disprove aether wind?
We know that the universe is not vacuum. The average temperature of the universe is 3° above absolute zero. So some "aether" really exists, but that is not some gas with very low density, but stardust. (I know that aether was only concept for…

foggy
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