Scaphe

The scaphe (or skaphe, also scaphium or scaphion) was a sundial said to have been invented by Aristarchus (3rd century BC). It consisted of a hemispherical bowl which had a vertical gnomon placed inside it, with the top of the gnomon level with the edge of the bowl. Twelve gradations inscribed perpendicular to the hemisphere indicated the hour of the day. Using this measuring instrument Eratosthenes of Cyrene ("ca." 220 BC) measured the length of Earth's meridian.

References

*Biémont, E., "Time Measurement in Astronomy" in Heck, A. (ed.) (2003), "Information Handling in Astronomy: Historical Vistas", page 20. Springer.
*Resnikoff, H., O'Neil Wells, R., (1984), "Mathematics in Civilization", pages 93-93. Courier Dover Publications.


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  • -scaphe — ♦ Élément, du gr. skaphê « barque » : bathyscaphe. ⇒ SCAPHE, élém. formant Élém. tiré du gr. « bateau, barque », entrant dans la constr. de subst. du vocab. de la mar. ou de l aéron. V. aéroscaphe, bathyscaphe, podoscaphe (rem. s.v. pod(o) ),… …   Encyclopédie Universelle

  • scaphé — [skafe] n. m. ÉTYM. 1818, in D. D. L.; mot lat.; du grec d abord « objet creusé, vaisseau ». ❖ ♦ Antiquité. 1 Gnomon. 2 (1876). Vase, récipient sacrificiel, en Grèce …   Encyclopédie Universelle

  • SCAPHE — urbs Mesopotamiae, Piolem …   Hofmann J. Lexicon universale

  • scaphe — variant of scaf …   Useful english dictionary

  • scaphe — bathy·scaphe; …   English syllables

  • scaphe — n. [Gr. skaphe, boat] (ANNELIDA: Polychaeta) In Amphictenidae, a flattened caudal appendage bearing the anus …   Dictionary of invertebrate zoology

  • bath|y|scaphe — bath|y|scaph or bath|y|scaphe «BATH uh skaf», noun. a diving craft consisting of a round steel chamber attached to a hull that can be navigated underwater to explore the depths of the sea: »The bathyscaph s basic idea is to imitate underwater the …   Useful english dictionary

  • mes|o|scaphe — mes|o|scaph or mes|o|scaphe «MEHS uh skaf, skayf; MEE suh », noun. an apparatus similar to the bathyscaph, used to explore the middle depths of the ocean: »The existence of these many portholes, with the possibility of looking in virtually every… …   Useful english dictionary

  • bathyscaphe — [ batiskaf ] n. m. • 1946; de bathy et scaphe ♦ Appareil habitable destiné à conduire des observateurs dans les grandes profondeurs sous marines. ● bathyscaphe nom masculin Engin autonome de plongée à grande profondeur, habitable et dont la… …   Encyclopédie Universelle

  • téléscaphe — [ teleskaf ] n. m. • 1966; de 3. télé et scaphe ♦ Techn. Téléphérique sous marin composé de cabines de plexiglas transparent soutenues par des câbles. téléscaphe [teleskaf] n. m. ÉTYM. 1966, le Monde; de télé(phérique), et rad. scaphe. →… …   Encyclopédie Universelle


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