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The source of obsidian for cultures inhabiting the territory of and around Greece was the island of Milos; the Starčevo–Körös–Criș culture obtained obsidian from sources in Hungary and Slovakia, while the Cardium-Impresso cultural complex acquired obsidian from the island outcrops of the central Mediterranean.
In other words, a translucent material is made up of components with different indices of refraction. A transparent material is made up of components with a uniform index of refraction. [1] Transparent materials appear clear, with the overall appearance of one color, or any combination leading up to a brilliant spectrum of every color.
Apache tears are rounded pebbles of obsidian or "obsidianites" composed of black or dark-colored natural volcanic glass, usually of rhyolitic composition and bearing conchoidal fracture. Also known by the lithologic term marekanite , this variety of obsidian occurs as subrounded to subangular bodies up to about 2 in (51 mm) in diameter, often ...
An opaque object is neither transparent (allowing all light to pass through) nor translucent (allowing some light to pass through). When light strikes an interface between two substances, in general, some may be reflected, some absorbed, some scattered, and the rest transmitted (also see refraction).
Fire opal is a transparent to translucent opal with warm body colors of yellow to orange to red. Although fire opals don't usually show any play of color, they occasionally exhibit bright green flashes. The most famous source of fire opals is the state of Querétaro in Mexico; these opals are commonly called Mexican fire opals. [48]
The room was cozy and warm, and the morning light was softly filtered by the transparent drapes, with gentle shadows from the trees dancing on the walls. My dogs, who had happily piled back into ...
Five basic cesias: black, matte, specular, translucent, and transparent. Diagram of the order system for cesias. A scale of cesia: from transparent to opaque (variation of permeability), by mixing clear water and milk. A scale of cesias from specular to matte (variation of diffusivity), by progressive tarnished of a mirror.
But his method of taking over the bureaucracy is much less transparent than the bureaucracy itself. When Bill Clinton offered buyouts to federal workers, in 1993, for instance, he did so after ...