Monday, 18 March 2013

http://dukeswoodproject.wordpress.com/2013/03/18/anne-mie-melis-free-but-valuable/



Fig 1: Begun in 1927 by Professor Thomas Parnell, this experiment was meant to reveal the surprising properties of an everyday material: pitch. Pitch is the name of a number of hard tar-like substances and in this case bitumen was used. Though at room temperature pitch appears to be a solid and can be shattered by a hammer, it is in fact a very high-viscosity liquid, and Professor Parnell wanted to prove it.

(University of Queensland Brisbane, Australia, ref: http://smp.uq.edu.au/content/pitch-drop-experiment)