Nuclear magnetic, generally based on hydrogen protons in the magnetic field *** vibration of the signals sent to the phenomenon, and hydrogen protons exist in water, human tissue contains a large amount of water, so it can be used for the phenomenon; named nuclear magnetic *** vibration, in fact, called magnetic *** vibration more reasonable.
Surely there is harm, but not as terrible as radioactive elements,
Specific harm to what extent, and pregnant women X-ray on the impact of the fetus, cell phone radiation, etc., there is no clinical data,
But in the radioactive source is turned on at a time when it is best not to more than 10 minutes,
And ultraviolet rays, the same as the original harmless, but if anyone who shines a half an hour under the UV light is guaranteed to burn,
And ultraviolet rays are harmless. light under half an hour guaranteed to burn
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