The Grade 12 Physics students did an experiment where they were modelling the radioactive decay of nuclei. They used (non- alcoholic) beer and measured at which rate the beer bubbles of the foam popped. Rather like the decay of radioactive nuclei, the bubbles burst randomly and the beer foam ‘decays’ over a period of time after the beer has been poured. By measuring the change of height of the beer foam over time, the students were able to draw the typical exponential decay curve, and determined the “half life” of beer foam.