After a visit to the Prague zoo, of course Maxim bought a new crocodilian. A gavial this time. #croc


New station Guillemins in Liege, Belgium. What a difference! #trip

Jack Dongarra at Sara superdag #conference

Bill Kramer at SARA 25th supercomputing day #conference

An inspiring talk by a Microsoft employee who says of himself that he is not an expert user of PowerPoint… #conference

Those sound-walls help to keep the neighborhood of the high-speed trains livable, but the view from the new train itself is uninteresting. #trip

Welcome aboard, Kees! #work

I never imagined this could happen to the bottom of a pan. #home #oops

The morning of June 8, 2004 the planet Venus moved in front of the sun. Since it was beautiful weather, I mounted my telescope on top of our office building in Delft and projected the image of the sun on a white sheet of paper. During the six hours of the event, we regularly paid a visit with different colleagues to take a live look.

SurpriseI have been grabbed (a bit late) by the December 2003 Puzzling Adventures by Dennis E. Shasha in Scientific American: the surprising strings.