The world’s longest running science experiment

Pitch Drop Scientist Remembered For Record-Setting Experiment
August 27, 2013

Science professor John Mainstone died over the weekend at age 78.
The Australian was overseer of what is said to be the world’s longest running physics experiment.
It was a flask with “pitch” or tar set up to allow it to “drip” — but very slowly.
In 87 years only a handful of drops have fallen.
The test was to prove that pitch was actually a liquid not a solid, although it shattered like a solid.

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