For decades scientists have been trying to solve Feynman's Sprinkler Problem: How does a sprinkler running in reverse—in which the water flows into the device rather than out of it—work? Through a ...

For two centuries, students have learned that heat flows and engines work according to rigid limits that no machine can beat.

Seismic kitchen roll: photograph showing paper towel being stretched between an anchor (bottom) and springs (top). (Courtesy: Tzortzopoulos et al. / Geophysical Research Letters) A seismic model based ...

When San To Chan successfully defended their PhD thesis, they received a gift of saltwater taffy to celebrate and couldn’t help being intrigued by the taffy’s unusual consistency: somewhere between a ...

For decades scientists have been trying to solve Feynman's Sprinkler Problem: How does a sprinkler running in reverse work? Through a series of experiments, a team of mathematicians has figured out ...

The image illustrates the experimental set-up: (a) Cut-away schematic of the floating sprinkler, (b) Flow control apparatus operating in suction mode, and (c) Flow imaging with a laser sheet ...