The fall of a drop of tar pitch was caught on camera for the first time. The experiment was set up at Ireland's Trinity College Dublin in 1944 to demonstrate the low fluidity of pitch, but it eventually was left unattended until physicists recently began to monitor it again. After a 69-year wait, they were rewarded with a drop July 11, caught on webcam. "Curiosity is at the heart of good science, and the pitch drop fuels that curiosity," said physicist Denis Weaire.
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