The pitch drop experiment is one of the oldest ongoing
physics experiments. This experiment was started in 1927 at the University of
Queensland in Australia. This experiment was started by Professor Thomas
Parnell. Pitch is a derivative of tar. It used to be used for waterproofing
boats. The material looks very solid but it is actually fluid. It has a
viscosity 100 billion times higher than water. Currently the ninth drop of the
experiment is forming. The university’s website contains a webcam of the experiment.
This link is provided below.
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