Template:POTD/2012-03-21
Three samples of yttrium, a silvery rare-earth metal. The left and the middle sample are sublimed dendritic and the cube on the right was created by argon arc remelting. Yttrium is named after the town of Ytterby, Sweden, where it was first discovered, and is used industrially in making phosphors such as those in cathode-ray tubes and LEDs.Photo: Alchemist-hp