4. Since it affects the radiation in the atmosphere in the human being

The atoms can become radioactive when they are unstable. Elements like the uranium, which is used commonly in the nuclear plants, do not have a stable form in the nature and are always radioactive. In this condition, the cores of the atoms happen for a process of disintegration, during which a lot of energy is liberated. This energy includes beams gamma, neutrons, electrons and particles alpha and thread that they are shot across the space.

The radiation does not affect all the persons of the same form, and the effect is determined by the dose, the time of exhibition and the distance to the source of the radiation.

We start by mentioning that the radioactivity takes place as consequence of the disintegration of the cores of the atoms. This way, for example, the principal
radioactive present material in Fukushima's head office is the uranium (one of them possesses also plutonium). When this element disintegrates it liberates a powerful radiation and there are formed radioactive cesium and iodine that, in turn, they separate into its elements in other elements, losing progressively his radioactive capacity.

If the dose of radiation is small, the human cells are capable of repairing the caused hurt or of replacing the cells died as consequence of the radiation in a process of regeneramiento normally. But if the dose is raised, there takes place the destruction of a great number of cells and / or the induction of cancers as consequence of irreversible hurts in the DNA that they could not have been repaired, provoking this way the generative mutations. Or, that if the quantity of radiation is relatively small, the same cells by means of a constitutive process of them themselves are capable of putting a brake to the radiation, but if the quantities are excessive, it is when the problems take place.