Lutetium

So in my infinite wisdom forgetfulness, I forgot to post a video about the Ytterby elements on Ytterbium - the LAST possible element to do so with. Now I guess is better than never...enjoy!

In other fun and exciting news, I learned that rust colored tights are a bad choice. Apparently my students thought that I was diseased (my legs had suddenly changed colors!) or that I was half black/half white (but only bottom/top half). Needless to say, the tights have been retired.
 

Fun Fact: When in doubt, use elements in lighting. Lutetium is found in lutetium-bromide lighting which is used for high-intensity discharge lights (read: I have no idea what this means but go with it).