- Number 313 |
- June 7, 2010
Water may be one of the most precious substances on Earth, but scientists know less than you might think about how it behaves at the molecular level. For example, how do billions of tiny aerosol particles interact when they form clouds? What molecular changes occur within large quantities of water, and how might certain polymers clean up water when it’s contaminated?
A new computation of the constant that describes the strength of the force between the quarks in a proton may help theorists tackle one of the most challenging problems of physics: analytically solving the theory of QCD and determining its coupling strength at large distances.
Aiming a weapon is harder than it looks. Shooters need clear, sharp views of a distant object (the target) and a near one (the gun's iron sight) at the same time — a trick the eye can't pull off by itself. Telescopic and holographic sights can overcome this problem, but they tend to be bulky, expensive and fragile.
In a project that’s part engineering, part history detective, and part high-tech
craft project, the U.S. Department of Energy’s (DOE) Savannah River National
Laboratory (SRNL) is creating computer-produced scale replicas of the Savannah River Site’s reactor buildings to support the American Recovery and Reinvestment Act project here. Use of these models as SRS plans final disposition of the reactor facilities is saving time and money.