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. Magnets 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. Under normal circumstances, the arrangement of nuclear spin axis is irregular, but placing a ferrite permanent 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 nuclear spin system from external RF effects, such as a certain frequency excitation nuclei can cause resonance effects. After the RF pulse is turned off, the nuclei of the spin system is intensified, this state can not be maintained rectangular sheet magnets, the magnetic field will return to its original alignment state, while the release of weak energy, to become the radio signal, this signal of the subject of many out of time and spatial resolution, you get motion picture distribution in the nucleus. 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 gray soft rubber magnet, and the blood is no signal black. 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 cutout magnet, high spatial resolution, showing heart and lesions picture, and its relationship with the surrounding structures, better than other X-ray imaging, ultrasonography, radionuclide and CT. NdFeB magnets NdFeB magnets which application range of applications as follows: electro-acoustic field: the speaker, receiver, microphone, alarm, stage audio, car audio. Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, power meter, water meter, sound meter, a reed sensors. Motor areas: VCM, CDDVD-ROM, generators, motors, servo motors, micro-motors, motors, vibration motors. Machinery and equipment: magnetic separation, magnetic separator, magnetic crane, magnetic machinery. Healthcare: NMR, medical equipment, magnetic health products, magnetic fuel economy and so on. Other industries: magnetized wax, pipe cleaning, magnetic fixture, automatic mahjong machine, magnetic locks, windows and doors, magnetic, magnetic bags, leather magnetic toys, tools magnetic, craft gift packaging. _ New permanent ferrite magnets magnetic Xin Tong (certified) _ Jiangsu magnet provided by the Dongguan City, Tong Xin magnetic Limited. Xin Tong, Dongguan City, the new magnetic Limited (www.dgxtxmagnet.com/) is Dongguan, Guangdong, magnetic leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the new Tong Xin magnetic leadership with the staff warmly welcome all inquiries to discuss, with new magnetic Tong Xin a better future.