oxidizing atmosphere
11Timeline of plant evolution — This article attempts to place key plant innovations in a geological context. It concerns itself only with novel innovations and events that had a major global significance, not those that are of solely anthropological interest. The timeline… …
12iron processing — Introduction use of a smelting process to turn the ore into a form from which products can be fashioned. Included in this article also is a discussion of the mining of iron and of its preparation for smelting. Iron (Fe) is a… …
13Reverberatory furnace — A reverberatory furnace is a metallurgical or process furnace that isolates the material being processed from contact with the fuel, but not from contact with combustion gases. The term reverberation is used here in a generic sense of rebounding… …
14Magdalene Odundo — Untitled, red terracotta carbonized vessel, Magdalene Odundo, 1997, Metropolitan Museum of Art Magdalene Anyango Namakhiya Odundo, OBE (born 1950) is a Kenyan born British …
15rhodium — /roh dee euhm/, n. Chem. a silvery white metallic element of the platinum family, forming salts that give rose colored solutions: used to electroplate microscopes and instrument parts to prevent corrosion. Symbol: Rh; at. wt.: 102.905; at. no.:… …
16Ruby — This article is about the mineral. For other uses, see Ruby (disambiguation). Ruby Natural ruby crystals from Winza, Tanzania General Category …
17Strontium titanate — Systematic name Strontium(2+) oxotitaniumbis(olate)[ …
18electronics — /i lek tron iks, ee lek /, n. (used with a sing. v.) the science dealing with the development and application of devices and systems involving the flow of electrons in a vacuum, in gaseous media, and in semiconductors. [1905 10; see ELECTRONIC,… …
19assaying — In chemical analysis, the process of determining proportions of metal, particularly precious metal, in ores and metallurgical products. The most important assaying technique grew largely out of the experiments of the ancient alchemists and… …
20terra sigillata — Also called Samian pottery, terra sigillata is a Mediterranean ceramic ware decorated with relief figures, first produced about 300 BCE, having evolved from the Etruscan s black pottery called bucchero ware. Terra sigillata is Latin, literally …
