= Luminiferous aether
{wiki=Luminiferous_aether}
Luminiferous aether, often referred to simply as "aether" or "ether," was a historical scientific concept that posited the existence of a medium through which light waves were thought to propagate. This hypothetical substance was believed to fill all of space and act as a carrier for electromagnetic waves, much like sound waves travel through air. The concept arose in the 19th century as scientists sought to explain the propagation of light, which was understood to behave like a wave.
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