ComPhys @comphys@qoto.org

@criw try some different types of coffee?

I use wxmaxima as a mathematica alternative. I don't consider it to be as polished as mathematica but in general it's pretty amazing.

The syntax of sympy puts me off (too much like programming) and I find sage to be a bit too huge and clunky.

What computer algebra systems does everybody else use?

@mycroft@mastodon.social That said I've never really found osmAnd to be a good replacement for Gmaps, and I never really found anything better either.

@mycroft@mastodon.social Great stuff :) same with older laptops and Ubuntu. I installed Ubuntu on somebody's failing laptop 3 weeks ago which is now apparently totally fine. I haven't used Ubuntu for ages, I was really impressed with how usable it is for a non-techie.

3D electrostatics example using #FEniCS. In this example I solve the Laplace equation for two concentric spheres to obtain an electric potential and take the gradient to find the electric field. The results are then compared with an analytical solution.

The geometry is produced in FreeCAD and the mesh/ boundaries produced with Gmsh.

https://comphysblog.wordpress.com/2018/08/26/3d-electrostatics-using-fenics/

Please let me know if you have comments or corrections!

#physics #electromagnetism #opensource #python