Pitch-Tar Drop, School of Physics, Trinity College Dublin

Begun in October 1944, the Tar Drop experiment, at Trinity College Dublin’s School of Physics, is one of the world’s oldest continuously running experiments. This curiosity of an experiment demonstrates that tar, or pitch, is a material that flows - albeit it with an incredibly high viscosity. Whilst pitch has been dropping from the funnel since 1944, nobody has ever witnessed a drop fall - they happen it happens roughly only once in a decade! In May of this year, with the latest drop about to