purification furnace
81Thin film — A thin film is a layer of material ranging from fractions of a nanometer (monolayer) to several micrometers in thickness. Electronic semiconductor devices and optical coatings are the main applications benefiting from thin film construction. A… …
82Buddhist meditation — Part of a series on Buddhism Outline · Portal History Timeline · Councils …
83Rufus Stokes — Infobox Person name = Rufus Stokes birth date = September 3, 1922 birth place = Phenix City, Alabama death date = June 22, 1986 death place = Claremont, California occupation = Inventor spouse = Bessie Lee Knight children = Myron D. Stokes,… …
84List of short stories by P. G. Wodehouse — The following is an incomplete list of short stories by P. G. Wodehouse grouped by the Wodehouse canon to which they belong, if applicable, within which they are listed by date of first publication. For a list of Wodehouse s books, including… …
85Impurity — For other uses, see Impurity (disambiguation). Impurities are substances inside a confined amount of liquid, gas, or solid, which differ from the chemical composition of the material or compound. Impurities are either naturally occurring or added …
86Ironwork — Gate of the Winter Palace in St Petersburg. Ironwork is any weapon, artwork, utensil or architectural feature made of iron especially used for decoration. There are two main types of ironwork wrought iron and cast iron. While the use of iron… …
87Heraeus — Infobox Company company name = Heraeus Holding GmbH company type = Gesellschaft mit beschränkter Haftung/ Private foundation = 1851 location city = Hanau location country = Germany key people = Wilhelm Carl Heraeus, Founder Dr. Jürgen Heraeus,… …
88Dalecarlia Reservoir — Location Bethesda, Maryland / Washington, D.C. Coordinates 38°56′32.83″N …
89Ceramic engineering — Simulation of the outside of the Space Shuttle as it heats up to over 1,500 °C (2,730 °F) during re entry into the Earth s atmosphere Ceramic engineering is the science and technology of creating objects from inorganic, non metallic… …
90Hypergraphy — Hypergraphy, also called hypergraphics and metagraphics, is a critical method developed by the Lettrist movement in the 1950s, which encompasses a synthesis of writing and other forms of media.[1] Isidore Isou, the founder of Lettrism, said that… …
