isotope fractionation
51Uran-Blei-Datierung — Die Uran Blei Datierung ist eine absolute Datierungsmethode, bei der die radioaktiven Zerfallsreihen von Uran ausgenutzt werden, um Proben zu datieren. Mit dieser Methode werden z. B. irdisches Gestein oder auch Meteoriten datiert. Das heute …
52Kakaobutteräquivalente — Als Kakaobutteräquivalente (CBE) werden Stoffe bezeichnet, die ähnliche chemische und physikalische Eigenschaften wie Kakaobutter aufweisen. Daher können Kakaobutter und CBEs in beliebigem Verhältnis gemischt werden. Hauptsächlich werden Palmöl,… …
53Boron — (pronEng|ˈbɔərɒn) is a chemical element with atomic number 5 and the chemical symbol B. Boron is a trivalent nonmetallic element which occurs abundantly in the evaporite ores borax and ulexite. Boron is never found as a free element on… …
54Isotopes of xenon — Naturally occurring xenon (Xe) is made of nine stable isotopes. (124Xe, 134Xe and 136Xe are predicted to undergo double beta decay, but this has never been observed, so they are considered to be stable.) [… …
55Isotopes of krypton — There are 31 known isotopes of krypton (Kr). [cite web |url=http://ie.lbl.gov/education/parent/Kr iso.htm |title=Isotopes of Krypton |accessdate=2007 03 20 |publisher=Nuclear Science Division] Naturally occurring krypton is made of five stable… …
56Isotopes of neon — Neon (Ne) possesses three stable isotopes, 20Ne, 21Ne, and 22Ne. In addition, 16 radioactive isotopes have been discovered ranging from 16Ne to 34Ne, all short lived. The longest lived is 24Ne with a half life of 3.38 minutes. All others are… …
57Otto Hahn — Hahn in 1944 Born 8 March 1879 …
58Global meteoric water line — The Global Meteoric Water Line is an equation defined by the geochemist Harmon Craig [cite journal|journal=Scripps News|url=http://scrippsnews.ucsd.edu/Releases/?releaseID=550|date=18 March 2003|title= Obituary notice: pioneer of geochemistry:… …
59star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …
60Mushroom cloud — created by smoke billows Ascending cloud from Redoubt Vol …
