ytterbium :

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  • n  a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime

  • They have tongue-twisting names (praseodymium, gadolinium, cerium, lanthanum, ytterbium, etc.
News & Articles

  • Can’t Beat These New Clocks
    Using lasers to trap and measure ytterbium atoms to make an optical lattice clock, scientists have created a timepiece 10 times more precise than existing atomic clocks.
    Aug. 26, 2013 - New York Times
  • Ytterbium Atomic Clock: World’s Most Accurate Time Keeper That Can Run For Billions Of Years
    A group of physicists at the National Institute of Standards and Technology, or NIST, in the U.S. has developed a pair of atomic clocks, which they say are capable of keeping the most precise time ever for a period matching the age of the universe. The new clocks, referred to as “ytterbium optical lattice clocks,” are said to have set a new record of stability, measured through the precision by ...
    Aug. 24, 2013 - International Business Times
  • Imperturbable ytterbium reverberates superbly, scientists say
    Scientists at the US National Institute of Standards and Technology have developed the most stable clock ever, using lasers to vibrate a lattice of a rare metal called ytterbium
    Aug. 24, 2013 - The Christian Science Monitor

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