5. Many hospitals use a cyclotron to produce radioactive isotopes for nuclear imaging or nuclear medicine. A cyclotron uses a strong magnetic field to keep protons moving in circular orbits. A proton begins in a small-diameter orbit with a low speed, but it is gradually accelerated with a clever use of electric fields to higher and higher speeds. This causes the orbit's diameter to gradually increase until the proton exits the machine from a large-diameter orbit. One commercial cyclotron uses a 2.0 T magnetic field.

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Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.