Jenn-Kang Hwang, Professor of Computational Biology Warshel Institute for Computational Biology The Chinese University of Hong Kong, Shenzhen
20. June 2012
The shadow (length=x) cast by a tilting stick (length=z)gives information of the tilting angle (a): a =acos(x/z).
One of the most amazing equations: exp(i Pi) = -1
Write a comment
You can do it, too!
Sign up for free now at