vitreous coat
51Rhodochrosite — from Sweet Home Mine, Alma, Colorado, USA General Category Mineral species …
52Choroid — Schematic cross section of the human eye; choroid is shown in purple …
53Middlewich — Coordinates: 53°11′31″N 2°26′35″W / 53.192°N 2.443°W / 53.192; 2.443 …
54Islamic pottery — The era of Islamic pottery started around 622. From 633, Muslim armies moved rapidly toward Byzantine, Persia, Mesopotamia, Anatolia, Egypt and later Andalusia. The early history of Islamic pottery remains somewhat obscure and speculative as… …
55Building insulation materials — A selection of insulation materials can aid in building insulation. All of these are based on standard principles of thermal insulation. Materials used to reduce heat transfer by conduction, radiation or convection are employed in varying… …
56enamelwork — e·nam·el·work (ĭ nămʹəl wûrk ) n. 1. Decorative work done in enamel. 2. Enamelware. * * * Metal objects decorated with an opaque glaze fused to the surface by intense heat. The resulting surface is hard and durable and can be brilliantly… …
57glass — glassless, adj. glasslike, adj. /glas, glahs/, n. 1. a hard, brittle, noncrystalline, more or less transparent substance produced by fusion, usually consisting of mutually dissolved silica and silicates that also contain soda and lime, as in the… …
58lead processing — Introduction preparation of the ore for use in various products. Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low… …
59vision — I (New American Roget s College Thesaurus) Sense of sight Nouns 1. vision, sight, optics, eyesight, seeing; view, look, espial, glance, ken; glimpse, glimmer, peep, coup d oeil; focus; gaze, stare, leer; perception, contemplation; regard, survey; …
60paste — noun 1》 a thick, soft, moist substance, typically produced by mixing dry ingredients with a liquid. ↘a savoury spread: salmon paste. 2》 a thick, soft, moist adhesive. 3》 a mixture of kaolin and water of low plasticity, used for making… …
