On Wednesday, July 30, as scientists all over the country looked intently on, a synthetic earthquake shook a half-real building.
Real steel for a virtual structure: Physical stress administered to columns in this apparatus was translated into a digital simulation of how a building made from such columns would behave in an earthquake.
Part of the structure was conventional steel: full-sized structural support columns sitting in laboratories at the University of Colorado and the University of Illinois at Urbana-Champaign (UIUC).
But a third support column and the building floor that rested on them, forming a typical 1-story, 2-bay component of a modern steel frame building, existed nowhere but in software on chips. They were simulations, created by grid- linked machines at the National Supercomputing Center in Illinois and elsewhere.
Eric Mankin | Southern California University
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DESY and MPSD scientists create high-order harmonics from solids with controlled polarization states, taking advantage of both crystal symmetry and attosecond electronic dynamics. The newly demonstrated technique might find intriguing applications in petahertz electronics and for spectroscopic studies of novel quantum materials.
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The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.
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Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...
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