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Penn Physicists Shed Light on How Wetness Affects a Phenomenon in Foams

Penn Physicists Shed Light on How Wetness Affects a Phenomenon in Foams

Whether drinking beer, eating ice cream or washing the dishes, it’s fair to say that many people come across foam on a day-to-day basis. It’s in everything from detergents to beverages to cosmetics. Outside of everyday life, it has applications in areas such as firefighting, isolating toxic materials and distributing chemicals.

Ali Sundermier

Penn Junior Jack Stack Is Pursuing His Paleontological Dream

Penn Junior Jack Stack Is Pursuing His Paleontological Dream

Some paleontologists travel far and wide to seek new fossils — to the desert Southwest of the United States, remote regions of China or the farthest tip of Argentina. University of Pennslyvania student Jack Stack, on the other hand, made his first paleontological discoveries much closer to home.At home, in fact.

Katherine Unger Baillie

Penn Researchers Establish Universal Signature Fundamental to How Glassy Materials Fail

Penn Researchers Establish Universal Signature Fundamental to How Glassy Materials Fail

Dropping a smartphone on its glass screen, which is made of atoms jammed together with no discernible order, could result in it shattering. Unlike metals and other crystalline materials, glass and many other disordered solids cannot be deformed significantly before failing and, because of their lack of crystalline order, it is difficult to predict which atoms would change during failure.

Evan Lerner , Ali Sundermier

Four Penn Professors Among 2017 Class of AAAS Fellows

Four Penn Professors Among 2017 Class of AAAS Fellows

Four members of the University of Pennsylvania faculty have been named Fellows of the American Association for the Advancement of Science. Election as an AAAS Fellow is an honor bestowed upon members of AAAS, the world’s largest general scientific society, by their peers.

Katherine Unger Baillie , Greg Richter , Ali Sundermier

‘Brazil Nut Effect’ Helps Explain How Rivers Resist Erosion, Penn Team Finds

‘Brazil Nut Effect’ Helps Explain How Rivers Resist Erosion, Penn Team Finds

Pop the top off a can of mixed nuts and, chances are, Brazil nuts will be at the top. This phenomenon, of large particles tending to rise to the top of mixtures while small particles tend to sink down, is popularly known as the “Brazil nut effect” and more technically as granular segregation.

Katherine Unger Baillie