Stefan Hutzler and Denis Weaire are in the School of Physics, Trinity College Dublin, Ireland. Their postgraduate student Ali Irannezhad currently performs his experiments in his home in Tehran, Iran.

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

The simplest questions are often the best. Robert P Crease tries to answer one from a physics student in Kenya Seeking perfection Tennis balls are a low-cost way to explore simple physics concepts, ...