Molecular formula :
nature : it is used to measure use of radioactive substances and the main body organs and organizations are acceptable to the radiation absorbed dose, is a unit Gy (gray). Now that the whole body except lens and genital organs outside the body to accept the occasional single doses of radiation absorbed dose would not cause any immediate and delayed damage.
Notice:Each item can have many explanations from different angels. If you want grasp the item comprehensively,please see below "more details data".