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Category: Challenges that remain open

2 articles

The list below is believed complete, though membership – like everything here – is subject to revision.

  • Dip of the horizon – The angle by which the sea horizon falls below eye level, growing as the square root of the observer's height: in every almanac, and shaped like a radius.
  • Ezekiel Quartz – Aetheric theorist (1828–1887), the Aetheric Concord's self-styled Defender of the Aether, who reduced all of physics to one medium and dared the world to refute him.

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