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Old 07-05-2015, 10:03 PM   #613
lightgiver
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Lightbulb Tantalus Machine


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Niobium, formerly columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41.. It is a soft, grey, ductile transition metal, which is often found in the pyrochlore mineral, the main commercial source for niobium, and columbite.. The name comes from Greek mythology: Niobe, daughter of Tantalus since it is so similar to tantalum..It was not until the early 20th century that niobium was first used commercially.. Brazil is the leading producer of niobium and ferroniobium, an alloy of niobium and iron.. Niobium is used mostly in alloys, the largest part in special steel such as that used in gas pipelines..



January 1 - Teletext Ltd. launches a new Teletext service on ITV and Channel 4, replacing the 14-year-old ORACLE teletext service-Ben Silcock, an inadequately treated schizophrenic patient, enters the lion enclosure in London Zoo\2- The 3 opposing factions in the Bosnian conflict hold meetings with the aim of ending the 9-month conflict- "Gypsy Passion" closes at Plymouth Theater NYC after 55 perfs/3 - In Moscow, Presidents H. W. Bush (US) and Yeltsin (Russia) sign the second Strategic Arms Reduction Treaty-The THIRD Star Trek TV series Deep Space 9 premieres in syndication- "Catskills on Broadway"-"Christmas Carol"- "Lost in Yonkers"- "Secret Garden"- "Tommy Tune Tonite!" closes - Junk bond king Michael Milkin is released from jail after 22 mths- "The Comeback", QB Frank Reich led the Buffalo Bills back from a 32-point deficit, to defeat the Houston Oilers ..

The temperature stability of niobium-containing superalloys is important for its use in jet and rocket engines..These superconducting alloys also containing titanium and tin, are widely used in the superconducting magnets of MRI scanners.. Other applications of niobium include its use in welding, nuclear industries, electronics, optics, numismatics, and jewelry..Niobium is a lustrous, grey, ductile, paramagnetic metal in group 5 of the periodic table ..Niobium becomes a superconductor at cryogenic temperatures.. At atmospheric pressure, it has the highest critical temperature of the elemental superconductors: 9.2 K..The metal has a low capture cross-section for thermal neutrons; thus it is used in the nuclear industries..Absorption cross section is often highly dependent on neutron energy..The isotope 198Au is a beta emitter that decays into the mercury isotope 198Hg.. In this process the atomic number rises by one..In particular, the increase in uranium-238's ability to absorb neutrons at higher temperatures (and to do so without fissioning) is a negative feedback mechanism that helps keep nuclear reactors under control..




5-The state of Washington executes Westley Allan Dodd by hanging (the first judicial hanging in America since 1965)-MV Braer, a Liberian-registered oil tanker, runs aground off the Scottish island of Mainland, Shetland, causing a massive oil spill\6 –Turd is the first high-ranking British official to visit Argentina since the Flaklands War/11 – Monday Night Raw– BA admits liability and apologises "unreservedly" for a "dirty tricks" campaign against Virgin AtlantIC\13 – Wayne Edwards, a 26-year-old Lance Corporal, becomes the first British fatality in the conflict in Bosnia, former Yugoslavia - French, British, and US fighter jets launch bombing raids in southern Iraq/19-The Chemical Weapons Convention (CWC) is signed\31 – Super Bowl XXVII: The Buffalo Bills become the first team to lose 3 consecutive Super Bowls..
http://en.wikipedia.org/wiki/1993
http://en.wikipedia.org/wiki/Niobium
http://www.davidicke.com/forum/showp...21&postcount=5Which three books would you have taken?.One cannot choose but wonder.. You see, he has all the time in the world..David, I've got to tell it now.. While I still remember it!.Relax, try to relax..You've all the time in the world..You're right David, that's exactly what I have.. All the time in the world...http://www.davidicke.com/forum/showp...2&postcount=48
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