If you’ve ever whacked the bottom of a ketchup bottle to get that tasty tomato goop flowing, you’ve put some serious physics to work. Ketchup is a non-Newtonian fluid. So are toothpaste, yogurt, ...

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 ...

Viscosity and rheology are critical in formulation, especially as syringeability and manufacturability of high-concentration, subcutaneous biologics are in focus. Classic viscometers require large ...

The observations were so unbelievable that the researchers needed to repeat the experiments to "make sure it was real.” ...

Studies explore fluids in pancakes, beer, and the kitchen sink. Mechanical engineer Roberto Zenit spent the summer of 2019 trying to solve a problem that now plagues science departments around the ...