A reflecting surface (originally that of a fluid at rest) used in taking elevations, and now usually forming part of a sextant.
单词 | θ1420 |
释义 | the world > the universe > cosmology > science of observation > astronomical instruments > measuring altitude > [noun] > artificial horizon (2) artificial horizon1762 A reflecting surface (originally that of a fluid at rest) used in taking elevations, and now usually forming part of a sextant. false horizon1812 a level reflecting surface, usually of mercury, used in taking altitudes; also called artificial horizon. |
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