Latest Continuum mechanics Stories
Deutsches Elektronen-Synchrotron The craft of glassmaking extends way back in time. It was over five-thousand years ago when mankind learned how to make glass. Even prior to this discovery, humans had been using naturally occurring glass for tool making. Despite this long and rich history and widespread use of glass, surprisingly little is known about the interplay between the mechanical properties of glasses and their inner structures. For the first time, researchers from Amsterdam...
Lee Rannals for redOrbit.com – Your Universe Online Researchers have found a way to determine whether glass will be brittle, or will have the ability to bend without breaking. The team wrote in the journal Nature Communications about how they've identified a temperature that allows you to determine whether you will be forming a brittle piece of glass, or ductile, which refers to a piece of glass' toughness. There is a temperature at which glass can become too viscous for...
The results are significant because they can help to improve our understanding of medical conditions, such as thrombosis, aneurysms and arteriosclerosis. The research team is publishing its results in Physical Review Letters and the American Physical Society has highlighted the work on its Physics website, placing it on the Focus List of important physics news. Blood flows differently than water. Anyone who has ever cut themselves knows that blood flows viscously and rather erratically....
Plagued by a life ruled by the stress of a birth-defect, surviving abuse, alcoholism, and unemployment, author Richard Murphy dug deep into his source of strength, and found inspiration to carry on and overcome stress. After years of studying, under martial art masters and native elders as well as through life’s experiences, Murphy felt driven to educate people about the strength they have within themselves. His methods can be found in his book, Change Your Stress: Restore Your Freedom...
Brett Smith for redOrbit.com - Your Universe Online If you’ve ever run across a section of beach where a wave has just receded, you know that the wet sand there can act and feel as hard as concrete. The thick mixture of sand and water that can be poured like a liquid but is hard when struck is an example of what scientists call a non-Newtonian fluid. According to a study published today in Nature, researchers from the University of Chicago have demonstrated that a compression of...
Model gives clues on how to optimize homogeneous feeding of cells in suspension from a liquid nutriments supply in a bioreactor Physicists who have studied the mixing between two incompatible fluids have found that it is possible to control the undercurrents of one circulating fluid to optimise its exposure to the other. This work, which is about to be published in EPJ E¹, was performed by Jorge Peixinho from CNRS at Le Havre University, France, and his colleagues from the Benjamin Levich...
Change leadership expert, Brett Clay, who attended the National Speakers Association (NSA) Conference during the Super Bowl, says people can achieve their goals and feel like Super Bowl champions if they get into the actuation zone--the mindset of putting change into motion. Only by making changes can people improve their success and attain their goals. Clay discusses how people, such as the NSA Conference attendees, can put change into motion. http://changeleadershipgroup.com Seattle, WA...
Microscopic spheres form strings in surprising alignments when suspended in a viscous fluid and sheared between two plates — a finding that will affect the way scientists think about the properties of such wide-ranging substances as shampoo and futuristic computer chips. A team of scientists at Cornell University and the University of Chicago have imaged this behavior and have explained the forces causing it for the first time. Its findings appear in the Dec. 19-23 early edition of the...
The new measurements, by UCLA physics professor Giovanni Zocchi and former UCLA physics graduate student Yong Wang, are approximately 100 times higher in resolution than previous mechanical measurements, a nanotechnology feat which reveals an isolated protein molecule, surprisingly, is neither a solid nor a liquid. "Proteins are the molecular machines of life, the molecules we are made of," Zocchi said. "We have found that sometimes they behave as a solid and sometimes as a liquid. "Solids...
In things thick and thin: Cornell physicists explain how fluids – such as paint or paste - behave by observing how micron-sized suspended particles dance in real time. Using high-speed microscopy, the scientists unveil how these particles are responding to fluid flows from shear – a specific way of stirring. (Science, Sept. 2). Observations by Xiang Cheng, Cornell post-doctoral researcher in physics and Itai Cohen, Cornell associate professor of physics, are the first to link direct...
