3 ms·
One thing that is neat about Euro banknotes is that they include the element Europium as part of the security features: https://en.wikipedia.org/wiki/Europium#
by arethuza 4y ago
One thing that is neat about Euro banknotes is that they include the element Europium as part of the security features:
https://en.wikipedia.org/wiki/Europium#Applications https://en.wikipedia.org/wiki/Europium#Applications