Correcting myself, I was thinking of Zinc Oxide. But it's still pretty inert. I wouldn't want a plate of it, but whatever level of toxicity it possesses, it is low enough that it requires careful study to detect.
43 karma · joined January 18, 2016
Otherwise, I agree with your point.
This link shows a hardboiled egg spinning on its end, but otherwise seems to agree with me, though it doesn't quite contradict you: http://www.planet-science.com/categories/experiments/magic-t...
Excel is amazing, because it's the wrong tool for everything! Which is really impressive, since there aren't many tools you can do everything with!
I realize it's not a very funny joke, but I do think it's true.
This means that you're getting a "pseudo-height" map - if you had a surface with 2 types of atoms, both the same size, but with different tunneling barriers, you would see them appear to be different sizes.