Visitors

Since we moved to Karlsruhe, we have had a number of friends visiting. Some of them (Peter D., Kazumi T., Hamish R.) are collaborators in the KATRIN experiment that I am working on; some of them are not (Aksel H.). Our latest visitor is Art M., who came as an external reviewer for the Helmholtz Association (which funds KATRIN).

Art and our family went out for dinner tonight. Just like other visitors before him, he peppered Gabriel with science and math questions, while Jocelyn hid shyly behind Glenda. Unlike some of the tougher challenges in the past*, Gabriel sailed through Art's multiplication and division problems.


*Peter D.: (1) Why do Guinness bubbles sink? (2) What is a pantograph (since Gabriel loves trains so much)?
*Aksel H.: (1) About half of our body weight comes from protons, where does the other half come from? (2) You know many languages; do you know C++ (Aksel saw this picture some years ago)?