Radiation has become a people's words but with hair standing on end, no need to carry out the state of extreme nervousness. Visible light is radiation. Heat is also radiation. Many news which referred to the explosion, or "melt" will release radiation into the atmosphere, but few media say "radiation" is what.

At least once a nuclear power plant has been released from the explosion of steam containing radioactive substances. Nuclear power plants rely on uranium -235 fission to produce energy, which is to say that it is -235 into smaller atoms. 60 km away from the Fukushima nuclear power plant have been found in this small atoms in two: cesium and iodine -131. the radioactive material is cannot be aware of biological and so may be attached to the skin on, also may be to eat or breathe into the body. These atoms are split into smaller atoms, and they are likely to become protons. When this happens, the high energy gamma rays are released.

Will also release beta rays. Berta ray is basically the ejection of the electron flow. Although unlike gamma rays that full of energy, but if long enough to stay on the skin will cause problems. Due to radioactive material can be ingested, so beta rays also may be excited in the human body, this will caused great harm.