18:4018:40, 4 July 2010diffhist−187
Iron
→Isotopes: Iron-56 is the most stable nuclide as it has lowest mass per nucleon. See G. Audi and A.H. Wapstra Experimental Mass Data, Nucl. Phys. A565, 1 (1993).
13:4613:46, 14 June 2010diffhist+21
m
Upsilon
→Usage: U+03D2 would be "upsilon with hook" which is different from the "upsilon with rams' horns" that should be used here. See also http://www.unicode.org/versions/Unicode5.2.0/ch07.pdf