Category: Emptiness, and what keeps turning up in it
2 articlesThe list below is believed complete, though membership – like everything here – is subject to revision.
- Luminiferous aether – The real, discredited 19th-century medium for light – abandoned by physics in 1887, and never by the Aetheric Concord.
- Vacuum – Defined by what is not in it, which makes it the one thing in physics described by a list. The list has been declared complete three times.
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