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View Diary: Kitchen Table Kibitzing: March 23 (80 comments)

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  •  Terbium [Tb] Z=65 with bonus video (23+ / 0-)
    Pure terbium, 3 grams. Original size: 1 cm

    Terbium is a chemical element with the symbol Tb and atomic number 65. It is a silvery-white rare earth metal that is malleable, ductile and very hard. Terbium is never found in nature as a free element, but it is contained in many minerals, including cerite, gadolinite, monazite, xenotime and euxenite.

    Terbium is used to dope calcium fluoride, calcium tungstate and strontium molybdate, materials that are used in solid-state devices, and as a crystal stabilizer of fuel cells which operate at elevated temperatures. As a component of Terfenol-D (an alloy that expands and contracts when exposed to magnetic fields more than any other alloy), terbium is of use in actuators, in naval sonar systems and in sensors.

    Most of the world's terbium supply is used in green phosphors. Terbium oxide is in fluorescent lamps and TV tubes. Terbium green phosphors are combined with divalent europium blue phosphors and trivalent europium red phosphors to provide "trichromatic" lighting technology, a high-efficiency white light used for standard illumination in indoor lighting.Wiki
    Here's the article on Terbium by GrrlScientist at the Guardian...
    I wasn't sure anyone was following my weekly "meet the chemical elements" series, but since I've returned to the land of the living, I've received email from readers asking what happened to it. Because I absolutely hate disappointing people, and since you want me to continue this series, I will do just that.
    And finally, here is an interactive Periodic Table where you can explore the elements to your geeky heart's desire: PTable



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