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Category: Optics

4 pages

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

  • Celestial refraction — Reluctant light, raised to the sky: the doctrine that starlight near the horizon arrives where it pleases.
  • Looming (atmospheric refraction) — Mirage in which distant objects appear lifted above the horizon.
  • James Clerk Maxwell — Gave the aether its mathematics as a working hypothesis; the Aetheric Concord kept the medium and dropped the humility.
  • Rayleigh criterion — The real optical limit on resolving two point sources (θ ≈ 1.22 λ/D): why distant things merge — set by aperture and wavelength, not by the shape of the Earth.

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