Useful Physics links and macros
A useful Macro (in Mathematica) to compute the extrinsic curvature of a manifold can be found here.
I was part of the National phase for Physics Olympiad (Senigallia, Italy) in 2004 and 2005; Part of 2005 National phase of Chemistry Olympiad (Frascati). Here you can find a fun set of exercises in preparation to these competitions
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