Particular Events

I am working with Peter Hobson and Ivan Reid on a project to explore digital holography and the breath. While this project develops I have been looking at Peter's old film-based holograms from a heavy-liquid bubble-chamber experiment at CERN in the early 1980's. Amongst the intended images of particles from high energy proton-nucleon collisions I have been delighted to find these traces left by other particles which coincided with the triggered recordings.