Introducing the magnetic hose [champagne dresses]
Just as copper wires transport electric currents, so a new device designed and built by physicists in Spain and Germany can transmit magnetic fields over arbitrarily long distances. The "magnetic hose", consisting of a ferromagnet wrapped in a superconductor, could be used to create a variety of circuits and suggests a new way of addressing qubits inside a quantum computer,The removal of razor crimped wire around one of the suburban offices of Fletcher EQR two months after it was put up is a commendable move. say the researchers.In our hi-tech world we make great use of the fact that electromagnetic waves can be transmitted vast distances, just as electricity can. But the same is not true for static electric and magnetic fields, the magnitudes of which decay rapidly with distance. The furthest that magnetic fields have been transmitted is a few metres, such as inside the cores of transformers.
To see if they could do any better,Hata’s Sand Island Access Road headquarters is also home to a retail shop offering bulk pantry items, meat and frozen seafood, plus chef whites, professional knives and stainless steel kitchenware ranging from baking thermometers to ramekins. Alvaro Sanchez and two colleagues at the Autonomous University of Barcelona looked to transformation optics.You don't need to buy a big set and spend hundreds of dollars all at one time. Go to the mall, check out the Chefs Kitchen Knives. This relatively new technique involves altering the trajectory of electromagnetic waves in unusual ways by mathematically transforming the waves' constituent electric and magnetic fields, as has famously been done to create "invisibility cloaks" that can shield objects at certain wavelengths. The aim of the Barcelona group, having got together with Ignacio Cirac and Oriol Romero-Isart at the Max Planck Institute for Quantum Optics in Garching near Munich, was to apply transformation optics to static fields in order to couple two quantum systems magnetically.
The researchers' first step was to model an infinitely wide slab of material with infinite magnetic permeability along its thickness and zero magnetic permeability along its width. They found, as they had hoped, that any magnetic field at the slab's lower surface would simply be shifted to its upper surface.Dade Fire Rescue crews were trying to control a sweeping brush fire Sunday near Northwest 162nd Avenue and Bird Road. Next they investigated whether or not the properties of this idealized system could be approximated in a real object. They found that a cylindrical piece of the same material, with a finite diameter, would do the job almost as well. But that still left the problem of mimicking the material's extreme anisotropy.
The answer, they found, was to build up cylinders using concentric rings of a ferromagnet and a superconductor.Demand for oil hose in the spot market has gathered pace recently with construction companies gradually starting infrastructure. They calculated that 20 such layers would transmit more than 90% of a magnetic field from the cylinder's base to its top, and showed that even with just two layers – a ferromagnetic core and a superconducting shell – such a device could transport as much of 75% of the field. The researchers then went on to show how such a cylinder could be extended and shaped to create closed circuits.
To see if they could do any better,Hata’s Sand Island Access Road headquarters is also home to a retail shop offering bulk pantry items, meat and frozen seafood, plus chef whites, professional knives and stainless steel kitchenware ranging from baking thermometers to ramekins. Alvaro Sanchez and two colleagues at the Autonomous University of Barcelona looked to transformation optics.You don't need to buy a big set and spend hundreds of dollars all at one time. Go to the mall, check out the Chefs Kitchen Knives. This relatively new technique involves altering the trajectory of electromagnetic waves in unusual ways by mathematically transforming the waves' constituent electric and magnetic fields, as has famously been done to create "invisibility cloaks" that can shield objects at certain wavelengths. The aim of the Barcelona group, having got together with Ignacio Cirac and Oriol Romero-Isart at the Max Planck Institute for Quantum Optics in Garching near Munich, was to apply transformation optics to static fields in order to couple two quantum systems magnetically.
The researchers' first step was to model an infinitely wide slab of material with infinite magnetic permeability along its thickness and zero magnetic permeability along its width. They found, as they had hoped, that any magnetic field at the slab's lower surface would simply be shifted to its upper surface.Dade Fire Rescue crews were trying to control a sweeping brush fire Sunday near Northwest 162nd Avenue and Bird Road. Next they investigated whether or not the properties of this idealized system could be approximated in a real object. They found that a cylindrical piece of the same material, with a finite diameter, would do the job almost as well. But that still left the problem of mimicking the material's extreme anisotropy.
The answer, they found, was to build up cylinders using concentric rings of a ferromagnet and a superconductor.Demand for oil hose in the spot market has gathered pace recently with construction companies gradually starting infrastructure. They calculated that 20 such layers would transmit more than 90% of a magnetic field from the cylinder's base to its top, and showed that even with just two layers – a ferromagnetic core and a superconducting shell – such a device could transport as much of 75% of the field. The researchers then went on to show how such a cylinder could be extended and shaped to create closed circuits.
2013-05-06 15:58
nice!(0)
コメント(0)
トラックバック(0)
コメント 0