In particle physics, we often use toy models, both to describe complicated things in (hopefully) easier to understand ways, but also to quickly study the effects of some changes to a detector or to some analysis. Now, students of the University of Tokyo gave us a whole new toy to look at: A full model of the Belle-II detector… constructed in LEGO. Complete with illuminated particle tracks, it gives us all something to look at while we are working to construct the real thing.
