Tag Archives: xkcd

Between two mirror planes …

Posted on 14 March 2009 by

Here’s a question from the 2009 GATE paper: Q.15: A defect that is bounded by two mirror planes is: [You have to imagine this being read out by Big B]: (A) twin, (B) stacking fault, (C) grain boundary, and (D) … Continue reading →

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After the fractal crystal …

Posted on 14 February 2009 by

… yesterday, how about a fractal Valentine today? Thanks to xkcd. [Wikipedia has a good entry (with a couple of animations) on the Sierpiński triangle.] Happy Valentine’s, folks!

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