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Additional Resources for you to Explore
For all the basics about europium, check out the Visual Elements Periodic Table.
For amazing photos and facts about europium, check out The Elements by Theodore Gray.
Europium fluorescence is used for anti-counterfeiting in Euro banknotes. When these notes are exposed to UV light parts should glow red because of Europium.  Banknote-counting machines can automatically detect any forgery by the absence of this fluorescence.