SPECULAR

SPECULAR
SPECULAR
a Speculo differt, illud enim Graece διόπτρα, per quod videtur; hoc issdem κάτοπτρον, quô videtur: illud διάφασιν, hoc ἔμφασιν facit. Et quidem Specularia dicebantur, quibus lumen in cenacula inferebatur, et Sol admittebatur in aedes, ut hodie per vitreamina et chartacea fit. Senecae l. 3. Ep. 86. Quantae nunc aliquis rusticitatis damnet Scipionem, quod non in caldarium suum latis specularibus diem admiserat. Et Ep. 90. Quaedam nostra demum memoriâ prodisse scimus, ut specularium usum prolucente testâ clarum transmittentium lumen
Muniebantur etiam his specularibus hieme cenationes et diaetae, adversus ventorum imbriumque vim: atque ita venti his excludebantur, ut tamen lumen habitantibus transfunderent. Ubi eorum originem apud Romanos usumque duplicem habes. Sic autem dicta sunt, quod e speculari lapide fiebant, qui, vitri modô perlucidus, facillime in quamlibet tenues crustas finditur: uti quidem Cuiacio visum. At Salmasius ita appellata ait, quo visum transmitterent, ac per ea speculari liceret ac perspicere unde nomen ipsi Lapidi Speculari, i. e. διόπτρῳ et διαφανεῖ, Certe Tertulliano in Apologet. omnis materia, quae διάφασιν habet, specularis materia dicitur. Erat vero illa phengites, Graece φεγγίτης, Idiotis κρύος, i. e. glacies; quem, quod gypso similis esset, gypsum quoque multi vocaverunt: inter quos Anastasius in Leone III. nec non et fenestras ipsius Ecclesiae ex metallo gypsino decoravit. Et Glossae Iatricae, διαφανὲς, γύψῳ ὅμοιον, ὃ καλεῖται σφεκλάριον. Sed et ex vitro specularia iam olim fiebant, aliaque translucida materia. Idem Anastasius ibid. et alias fenestras de vitro diversis coloribus decoravit. Cuiusmodi fenestras recens Latinitas vitria vocavit, Graeci ὑέλια. Imo ita etiam appellarunt, etiamsi ex speculari lapide essent. Neophytus Mon. in Lexic. Herbar. Σπέκλον τὸ τȏυ φεγγίτου ὑέλιον. Ubi tamen, quod ςπέκλον interpretatur, sequutus est Graecorum morem, qui Specular et Speculum passim confundunt. Veteres speculis iducebant parietes conclavium ad ornamentum: at fenestris Specularia indebant, ad illuminandam domum. Adde, quae de discrimine utrorumque iam diximus. Iidem vicissim verba illa in Basilic. Eclogis, ὣςπερ τὰ ἐμβλήματα τῶν ἀργυρῶν σκευῶν καὶ τὰ ςπέκλα τοῦ οἴκου, de specularibus acceperunt, cum de speculis debuissent: haec enim ex argento etiam, atque emblematis haud secus, ac scyphi, decorabantur. Porro laminae illae speculares, sive essent tesserae, sive orbes, invicem gypsô committebantur, per γυψεμπλαςτικην` τέχνην, sicut hodie plumbo etc. Quam in rem vide plura apud Plin. l. 3. c. 3. II. 36. c. 22. Salmas. ad Solin. p. 1095. etc. Uti vero Specularia, tum in cenationibus, tum in lecticis, a flatu vindicabant, et visum transmittebant; ita, somnum captantibus, ad lucis exclusionem, specularibus introrsum obducebantur vela seu plagulae, de quibus vide Theod. Marcilium ad Suet. Tito c. 10. ut et plura hanc in rem supra, non unô locô.

Hofmann J. Lexicon universale. 1698.

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  • Specular — Spec u*lar, a. [L. specularis (cf., from the same root, specula a lookout, watchtower): cf. F. sp[ e]culaire. See {Speculum}.] 1. Having the qualities of a speculum, or mirror; having a smooth, reflecting surface; as, a specular metal; a specular …   The Collaborative International Dictionary of English

  • specular — speculár adj. m., pl. speculári; f. sg. speculáră, pl. speculáre Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic  SPECULÁR, Ă adj. 1. (min.) care răsfrânge lumina. 2. referitor la oglindă; care par …   Dicționar Român

  • specular — (adj.) 1570s, of mirrors and glass, from L. specularis, from speculum (see SPECULUM (Cf. speculum)). Of sight or vision, from 1650s, from L. speculari to spy (see SPECULATION (Cf. speculation)) …   Etymology dictionary

  • specular — [spek′yə lər] adj. [L specularis] of, like, or by means of, a speculum specularly adv …   English World dictionary

  • specular — adjective /ˈspɛkjʊlə/ a) Pertaining to mirrors; mirror like, reflective. a perfect likeness would rather suggest a specular, and hence speculatory, phenomenon [...]. b) Pertaining to sight or vision. Calm as the Universe, from specular towers /… …   Wiktionary

  • specular — spec·u·lar spek yə lər adj conducted with the aid of a speculum <a specular examination> …   Medical dictionary

  • specular — adj. 1 of or having the nature of a speculum. 2 reflecting. Phrases and idioms: specular iron ore lustrous haematite. Etymology: L specularis (as SPECULUM) …   Useful english dictionary

  • Specular highlight — Specular highlights on a pair of spheres. A specular highlight is the bright spot of light that appears on shiny objects when illuminated (for example, see image at right). Specular highlights are important in 3D computer graphics, as they… …   Wikipedia

  • Specular reflection — is the perfect, mirror like reflection of light (or sometimes other kinds of wave) from a surface, in which light from a single incoming direction (a ray) is reflected into a single outgoing direction. Such behavior is described by the law of… …   Wikipedia

  • Specular iron — Specular Spec u*lar, a. [L. specularis (cf., from the same root, specula a lookout, watchtower): cf. F. sp[ e]culaire. See {Speculum}.] 1. Having the qualities of a speculum, or mirror; having a smooth, reflecting surface; as, a specular metal; a …   The Collaborative International Dictionary of English

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