ceramic-lined chamber
31Dome — For other uses, see Dome (disambiguation). Domal redirects here. For domal consonants , see Retroflex consonant. Dome of St. Peter s Basilica in Rome crowned by a cupola. Designed primarily by Michelangelo, the dome was not completed until 1590 A …
32Oil lamp — Neolithic stone lamps in Thousand Lamp Museum in Qiandeng town of Kunshan …
33chemical industry — Introduction complex of processes, operations, and organizations engaged in the manufacture of chemicals and their derivatives. Although the chemical industry may be described simply as the industry that uses chemistry and… …
34Forge — For the process of shaping metal by localized compressive forces, see Forging. For other uses, see Forge (disambiguation). A blacksmith s coal forge …
35Pittsburgh — This article is about the city in Pennsylvania. For the region, see Pittsburgh metropolitan area. For other uses, see Pittsburgh (disambiguation). City of Pittsburgh   City   …
36Jubb Yussef (Joseph's Well) — The ruins at Jubb Yussef (“Joseph’s Well” in English, جُبّ يُوسِف in Arabic, גוב יוסף in Hebrew [http://he.wikipedia.org/wiki/%D7%92%27%D7%95%D7%91 %D7%99%D7%95%D7%A1%D7%A3] ) in the Galilee are identified with the pit in Dothan, into which the… …
37atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …
38sponge — spongeless, adj. spongelike, adj. spongingly, adv. /spunj/, n., v., sponged, sponging. n. 1. any aquatic, chiefly marine animal of the phylum Porifera, having a porous structure and usually a horny, siliceous or calcareous internal skeleton or… …
39technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
40Pittsburgh, Pennsylvania — Infobox Settlement official name = City of Pittsburgh nickname = City of Bridges, Steel City, The Burgh, Iron City, The Smoky City, Steel Town, The College City, Roboburgh motto = Benigno Numine ( With the Benevolent Deity also translated as By… …
