Then and Now – The Periodic Table Element – Erbium

Then and Now - The Periodic Table Element - Erbium. Erbium, symbolized as Er in the periodic table, is a rare earth element with a rich history. Discovered in the 19th century, erbium has had various applications throughout the years, including its initial uses in X-ray technology, as well as in the coloring of glass and ceramics. However, over time, advancements in science and technology have led to the development of better alternatives, rendering erbium obsolete for its previous purposes. In this article, we explore the first uses of erbium and the reasons behind its diminishing relevance. Read more.