Picture of the Pitch Drop Experiment from University of Queensland featuring the current (2007) custodian, John Mainstone (picture taken in 1990), two years into the life of the 8th drop (from Wkipedia, licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license)
Picture of the Pitch Drop Experiment from University of Queensland featuring the current (2007) custodian, John Mainstone (picture taken in 1990), two years into the life of the 8th drop (from Wikipedia, licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license)
https://en.wikipedia.org/wiki/Pitch_drop_experiment
