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The Pitch Drop Experiment at UQ (world longest-running laboratory experiment - it's been dripping since 1927)

The Pitch Drop Experiment | School of Mathematics and Physics. Room-temp pitch is actually fluid, but sloooow: In 80 years only 9 drops have formed, and no one has ever seen the drop fall.

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The Pitch Drop Experiment | School of Mathematics and Physics. Custodian of the experiment, Professor John Mainstone. Pitch - brittle solid, highly viscous fluid, or both? 83 years later, the 9th drop is just forming and you can watch, live!

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