Fluids like air and water are called Newtonian because their viscosity does not vary with the force that’s applied to them. But many common fluids — almost everything in your Keep reading
Tag: jamming
Jamming Soft Grains
Hard granular materials — sand, gravel, glass beads, and so on — can flow, but, in narrow regions or under large forces, they can also jam up, essentially turning into Keep reading
Jamming Inside
Worm-like Spirostomum ambiguum are millimeter-sized single-cell organisms that live in brackish waters. In milliseconds, these cells can retract to half their original length, generating g-forces greater than a Formula One Keep reading
To Clog or Not to Clog?
The clear plastic disks use to study clogging appear rather plain — at least until you look at them through polarizers. Then the disks light up with a web of Keep reading
Slow to Relax
Oobleck is a decidedly weird substance. Made from a dense suspension of cornstarch in water, oobleck is known for its mix of liquid-like and solid-like properties, depending on the force Keep reading
Modeling Oobleck
Oobleck – that peculiarly behaved mixture of cornstarch and water – continues to be a favorite of children and researchers both. Oobleck flows like a liquid when deformed slowly, but try Keep reading
Shearing Grains
Granular materials, like beads and sand, demonstrate both solid and fluid-like behaviors, which makes them difficult to study. Traditionally, one method for studying how fluids respond to deformation places the Keep reading
Storing Memory in Bubbles
Soft systems like this bubble raft can retain memory of how they reached their current configuration. Because the bubbles are different sizes, they cannot pack into a crystalline structure, and Keep reading
Salty Comets
Many of the products we use every day in our homes behave like solids until the right force is applied. These yield-stress fluids are like hand sanitizer – strong enough Keep reading
Giving Chocolate that Smooth Finish
Anyone who’s tried to make chocolate confections at home can tell you that achieving that perfect smooth consistency isn’t easy. It was only after Rodolphe Lindt invented the process of Keep reading