Elementary!
October 11, 2008
by Sinnerman
Connect the occupants of the boxes that have been blanked out. The red ones connect a little more obviously and directly than the blue ones, but they all connect beautifully to the same thing.
(You can click on the image to see it in its full-size glory.)
Only visakasimhan and to an extent, cluelessanon, reacted correctly.
Click “more” for the answer.
All of these elements were found at the Ytterby quarry near Stockholm in Sweden. The red group comprises Ytterbium, Yttrium, Erbium and Terbium which were all first found there and directly named for Ytterby. The blue group contains three elements associated with Ytterby – Gadolinium (named for Gadolin who discovered it), Holmium (named for Stockholm) and Thulium (named for Thul, an ancient name for the Nordic countries).
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1. thecluelessanon | October 11, 2008 at 10:50 pm
Mainly by elimination, noticed that the Ytterby bunch is absent. So the reds should be Erbium-Terbium-Yttrium-Yttrbium
2. thecluelessanon | October 11, 2008 at 10:54 pm
Joseph Gadolin invented several of these rare earths and Gadolinium seems to be one of the masked ones.
Couldn’t spot Holmium either.
Only other Swedish element that I can think of is Nobelium which isn’t masked.
At which point I give up.
3. visakasimhan | October 14, 2008 at 10:20 pm
ytterby quarry
red :terbium,erbium,ytterbium,yttrium
blue:gadolinium,holmium ,thulium