Magnet application pigeon enthusiasts medicine knows that if the pigeons fly hundreds of kilometers away, they will automatically homing. Why have such a good pigeon house ability to recognize it? It turned out that pigeons are sensitive to the Earth's magnetic field, they can take advantage of changes in the Earth's magnetic field to find their own home. If a magnet tied in pigeon's head, pigeons would Trek. If the pigeon flew radio towers, powerful electromagnetic interference also makes them disoriented. Magnet magnet triangle in medicine, the use of MRI to diagnose abnormal human tissue to determine the disease, this is what we are more familiar with magnetic resonance imaging technology, the basic principles are as follows: positively charged nucleus, and spin motion. Typically, nuclear spin axis is arranged irregular, but placing a magnet, the spatial orientation of the nuclear spin transition from disorder to order when the applied magnetic field. Magnetization vector spin systems gradually increased from zero, when the system reaches equilibrium, the magnetization reaches a steady value. If at this time the role of the nuclear spin system by external soft rubber magnet, radio frequency excitation, such as certain nuclei can cause resonance effects. After the RF pulse stops, has intensified nuclei spin system can not be maintained in this state, will revert to the original arrangement of the magnetic field in the state, while the release of weak energy, become radio signals, put a lot of signal detection, and when the spatial resolution, you get movement nuclei distribution image. MRI is characterized by the flow of the liquid does not produce a signal called flow effect or effects flow gaps. Therefore vascular tubular structure is off-white, and black blood is no signal. This allows blood vessels and soft tissue can easily be separated. Cerebrospinal fluid surrounding the spinal cord have normal magnet surrounded by cerebrospinal fluid for the black and white of the fat off dura, spinal cord structure appears as a strong white signal. MRI has been used in diagnostic imaging of the whole body system. The best is brain, and spinal cord, heart and great vessels, joints bones, soft tissue and pelvic. Cardiovascular disease can be observed not only the chambers, great vessels and anatomical changes in the valve, but can be used for ventricular analysis, qualitative and semi-quantitative diagnosis, can be used for multiple cutaway view, high spatial resolution, and heart disease picture show , and its relationship with surrounding structures, better than other X-ray imaging, ultrasonography, radionuclide and CT. Only separated from the magnetic material can be adsorbed to play the role in order to cut off the magnet on the magnetic field, and the thicker the material, the better the effect of magnetic isolation. Strongest magnet highest performance magnets are rare-earth magnet, rare earth magnet and is the most powerful NdFeB magnets. However, at 200 degrees Celsius environment, is the most powerful samarium cobalt magnets. Determine why the size of the magnet has a magnetic Magnetic, is the Earth's rotation and its magnetic field because the current will continue to strongly bind to a rectangular sheet magnets, and finally the entire planet becomes a big field. Mineral on Earth, such as nickel, cobalt, iron and other substances because of the Earth's rotation and the rotation, and thus became a natural magnet. We all know that there is a gravitational field between substances. Similarly with the magnetic field, a field pole covered with the surrounding space. The size of the magnetic field can be represented by the number of the imaginary lines of magnetic force to said magnetic field lines which is more dense areas where the strong magnetic field, the magnetic field lines opposite if local thinning of the weaker. Soft rubber magnet, magnet Liaoning new Xin Tong magnetic provided by the Dongguan City, Tong Xin magnetic Limited. Xin Tong, Dongguan City, the new magnetic Limited (www.dgxtxmagnet.com/) strong, credible, in Dongguan, Guangdong magnetic materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the new Tong Xin magnetic and you hand into the brilliant, for a better future!