In a quiet corner of a physics building in Australia, a glass funnel filled with a tar-like substance has been dripping so slowly that only nine drops have ever fallen. As it approaches its centenary, ...

Sticky challenge One of the 37 pitch-drop experiments sent by Trinity College Dublin’s School of Physics to secondary schools all over Ireland. (Courtesy: Karl Gaff, TCD School of Physics) Nothing is ...

An experiment started in 1927 by Thomas Parnell aimed to prove pitch is a super-viscous fluid. Over 96 years, only nine drops have fallen from the funnel, with scientists waiting decades to witness ...

What if a material that looks solid could actually flow… over nearly a century? Launched in 1927 by an Australian professor to illustrate viscosity, an experiment of disarming simplicity has become a ...