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It is also used as a green phosphor in projection CRTs, though its drawback is marked lowering of efficiency at higher temperatures. Variants include, for example, using praseodymium instead of terbium ( CAS registry number 68609-42-7 , EINECS number 271-826-9), or using a mixture of dysprosium and terbium for doping (CAS number 68609-40-5 ...
A field-emission display (FED) is a flat panel display technology that uses large-area field electron emission sources to provide electrons that strike colored phosphor to produce a color image. In a general sense, an FED consists of a matrix of cathode-ray tubes , each tube producing a single sub-pixel, grouped in threes to form red-green-blue ...
Polycrystalline Mn:SrAl 12 O 19 is used as a green phosphor for plasma displays, and when doped with praseodymium or neodymium it can act as a good active laser medium. Sr 0.95 Ce 0.05 Mg 0.05 Al 11.95 O 19 is a phosphor emitting at 305 nm, with quantum efficiency of 70%. Several strontium aluminates can be prepared by the sol-gel process. [6]
James Preece, dating coach. In some cases, depending on where you are, it can also be helpful to use your surroundings. “This is particularly easy if there is something obviously going wrong ...
Manhattan prosecutors on Tuesday revealed a new timeline leading up to the killing of UnitedHealthcare CEO Brian Thompson on Dec. 4.
Google Maps has guided Spanish investigators to resolve a year-long murder mystery by capturing the moment a person stowed a suspected corpse into a car.
Bridgeville, California (population 25) was the first town to be sold on eBay in 2002, and has been up for sale three times since. [1] In January 2003, Thatch Cay, the last privately held and undeveloped U.S. Virgin Island, was listed for auction by Idealight International. The minimum bid was US$3 million and the sale closed January 16, 2003. [2]
A bipartisan group of U.S. lawmakers on Tuesday proposed three bills aimed at cracking down China's role in the U.S. fentanyl crisis, with measures that would set up a U.S. task force to disrupt ...