I am a retired physicist. I worked for the US Army for 32 years at the Army Reseach Lab. After retirement I got interested in geometric algebra and am the original author of galgebra, a geometric algebra module for python based on sympy (the nice sphinx documentation is from the people who continued the project and corrected programming errors) -

https://galgebra.readthedocs.io/en/latest/

I have been using linux since the early 90’s when I had to install it from 50 high density floppy discs.

My first home computer was an Apple II.