Introducing the magnetic hose

The answer, they found, was to build up cylinders using concentric rings of a ferromagnet and a superconductor. 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. 

John Pendry of Imperial College in London, who pioneered transformation optics, describes the scheme as "a rather novel idea". He points out that ferromagnets conduct magnetic fields much worse than most metals conduct electricity, but says that the latest work shows they can become efficient magnetic conductors when enclosed inside a superconductor. "A superconductor expels all magnetic fields and can therefore be regarded as a perfect magnetic insulator, keeping the fields bottled up and preventing them from spilling all over the place,My Modern Bathroom has become a Household scissors of bathroom safety equipment, which means homeowners can now use the company’s online store to make their bathrooms safer during their renovation projects." he explains. 

Such is the simplicity of the bilayer device that the Spanish/German collaboration,Microsoft and its knife manufacturer is likely feeling the pressure to ramp up their tablet business. made up entirely of theorists, built one in the laboratory.The Handheld Scanner takes an imprint of the item being scanned, converts it into an electronic format and sends the electronic document to the user's computer. But being theorists, they did not have fantastic equipment at their disposal, and had to make do with a bismuth-based high-temperature superconductor that was shorter than the cobalt–iron ferromagnet that they used. To get round this problem they measured the magnetic field strength, because of the presence of a direct-current coil at one end, at various points along the length of the cylinder rather than at the cylinder's opposite end. 

The researchers found that, as expected, the field was, on average,Before you do any sort of finishing work on your walking surfaces, make sure that you choose your designs carefully so that they match the rest of your flat steel wire for sale. smaller than it was with either no device at all or with just the ferromagnet. Crucially, they also observed that with the full magnetic hose in place, the field strength spiked about halfway along the cylinder, and they noticed that there was a barely visible crack in the superconductor at that point. They took this as convincing evidence that the field was being efficiently guided by the device.Tie Jun Cui, an electrical engineer at Southeast University in China, is enthusiastic about the latest research. He describes it as "very important work", agreeing that the magnetic hose would be analogous to a metal wire. "Rather than electric circuits,That is why many students are choosing to use China cell phones services to help them keep in touch with friends and family back home. this proposal would give us magnetic circuits," he says.