Search results
Results From The WOW.Com Content Network
Cobaltite was first described in 1797 by Klaproth. [6] Its name stems from the contained element cobalt, whose name is attributed to the German term Kobold, referring to an "underground spirit" or "goblin". The notion of "bewitched" minerals stems from cobaltite and other cobalt ores withstanding the smelting methods of the medieval period ...
Cobalt has been used to color glass since the Bronze Age. The excavation of the Uluburun shipwreck yielded an ingot of blue glass, cast during the 14th century BC. [62] [63] Blue glass from Egypt was either colored with copper, iron, or cobalt. The oldest cobalt-colored glass is from the eighteenth dynasty of Egypt (1550–1292 BC). The source ...
Now, 50 years later, the sketch comedy show has gone on to become the most Emmy-decorated television show in history, receiving countless nominations, awards and accolades. And in 2017, those ...
It also taught children the practical application of science in everyday life. [6] [5] Originally the show cast had been subsequently changed yearly on a basis during the run of the program, the original concept which runs on a segment-by-segment manner from 1994 till 1995 when the conceptualization of segments and scenarios of the script which ...
Stellite alloys are a family of completely non-magnetic and corrosion-resistant cobalt alloys of various compositions that have been optimised for different uses. Stellite alloys are suited for cutting tools, an example is Stellite 100, because this alloy is quite hard, maintains a good cutting edge at high temperature, and resists hardening and annealing.
Skutterudite is a cobalt arsenide mineral containing variable amounts of nickel and iron substituting for cobalt with the ideal formula CoAs 3.Some references give the arsenic a variable formula subscript of 2–3.
The Facts of Life Goes to Paris aired in 1982, followed by The Facts of Life Down Under in 1987. A third film, The Facts of Life Reunion , brought together nearly the entire cast in 2001.
If hydrochloric acid is used then cobalt may be extracted using alamine 336 in meta-xylene. [4] Cobalt can be extracted also using dialkylphosphinic acid. When cobalt carbonate (CoCO 3) is heated (calcined) above 400 °C it decomposes into carbon dioxide (CO 2) and cobalt(II) oxide (CoO) and can be refined as an oxide concentrate (see above).