Figure 10: A schematic representation of a Mills-Leventhal type of Ps free fall experiment. A real experiment will undoubtedly be significantly different from this illustration, which is intended only to highlight some of the different steps involved. Of distinct practical concern will be the need to keep the apparatus at low temperatures to mitigate effects of black body radiation, as well as minimizing the Ps speed, which will determine the length of the flight path and hence the experiment.