An “easy” solution to the Einstein equation (in free space) is the spherically symmetric Schwarzschild solution. The pdf bellow shows how one can use the diffgeom module in order to get the equations describing this solution.

One starts with the most general spherically symmetrical metric and by using Einstein equation …

In the last post I presented the small module for gaussian optics that I’ve created for sympy. Here I’ll try to show a real problem solved with it and with sympy.

[update]: The api is still changing. Also here I’m using ABCD matrices for something that is …

[update] The API shown here will most definitely change.

During my internship at LKB, Paris I’m expected to prepare a number of optical setups. I thought that it would be interesting to do the work in SymPy. That’s why I started working on the gaussopt module in sympy …