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6 April 2017
The evidence for a meteorite impact origin for the Stoer Group’s Stac Fada member seems to stack up. Engage in a virtual field investigation on Mountain Beltway.
7 October 2012
def. Widmanstätten Pattern: An interweaving pattern of the extraterrestrial minerals kamacite (a low nickel content iron-nickel alloy, similar to the terrestrial mineral ferrite) and taenite (a high nickel content iron-nickel alloy, similar to the terrestrial mineral austenite) that appears in some iron-nickel meteorites when a cut section of the meteorite is etched with weak acid. Widmanstätten patterns appear during acid etching because kamacite is more easily dissolved by weak acid than taenite. Widmanstätten patterns are believed to …
19 June 2011
Elephant in the Rotunda, Smithsonian Museum of Natural History. Picture taken from wikipedia here. There is nothing better than having an empty museum all to yourself. If I ever become wealthy, I think that I’ll rent out the great museums of the world at odd hours so that I can quietly appreciate them. Or maybe I’ll just hone my burglary skills and sneak it at night. I’m not interested in …