

aether
/ˈiː.θə/ /ˈi.θɚ/
noun

noun
Éther
Often as aether and more fully as luminiferous aether: a substance once thought to fill all unoccupied space that allowed electromagnetic waves to pass through it and interact with matter, without exerting any resistance to matter or energy; its existence was disproved by the 1887 Michelson–Morley experiment and the theory of relativity propounded by Albert Einstein (1879–1955).
Les scientifiques du XIXe siècle croyaient que les ondes lumineuses se propageaient à travers une substance invisible appelée éther, mais des expériences ont prouvé plus tard que cet éther n'existait pas.

noun
Éther

noun
Atmosphère, aura

noun
Éther diéthylique

