frequent impurities
41Egypt — • Provides information on history, religion, and literature Catholic Encyclopedia. Kevin Knight. 2006. Egypt Egypt † …
42Puddling — Pud dling, n. 1. (Hydraul. Engin.) (a) The process of working clay, loam, pulverized ore, etc., with water, to render it compact, or impervious to liquids; also, the process of rendering anything impervious to liquids by means of puddled material …
43Puddling furnace — Puddling Pud dling, n. 1. (Hydraul. Engin.) (a) The process of working clay, loam, pulverized ore, etc., with water, to render it compact, or impervious to liquids; also, the process of rendering anything impervious to liquids by means of puddled …
44Antimony — This article is about the element. For the town, see Antimony, Utah. Not to be confused with Antinomy, a type of paradox. tin ← antimony → tellurium As ↑ Sb ↓ Bi …
45Ethanol — For other uses, see Ethanol (disambiguation). Grain alcohol redirects here. It is not to be confused with Neutral grain spirit. Ethanol …
46Evaporation — is the process by which molecules in a liquid state (e.g. water) spontaneously become gaseous (e.g. water vapor). It is the opposite of condensation. Generally, evaporation can be seen by the gradual disappearance of a liquid when exposed to a… …
47Homeopathy — Homeopathy: coined in German from Greek hómoios ὅμοιος like + páthos πάθος suffering Oxford English Dictionary …
48Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …
49Rubidium — krypton ← rubidium → strontium K ↑ Rb ↓ …
50William Shockley — Infobox Scientist name = William Shockley imagesize = 145px birth date = Birth date|1910|2|13|df=yes birth place = London, England death date = Death date and age|1989|8|12|1910|2|13|df=yes death place = Stanford, California alma mater=CaltechMIT …
