what is immediate somatic effect of radiation?

Answer 1

Nuclear warfare is made more complex by virtue of the fact that a person can be burned by at least three processes. The first (the major cause of burns) is not caused by ionizing radiation.

Thermal burns from infrared heat radiation.
Beta burns from shallow ionizing radiation (this would be from fallout particles, the largest particles in local fallout would be likely to have very high activities due to the fact that they would be deposited so soon after detonation and it is likely that one such particle upon the skin would be able to cause a localised burn)
Gamma burns from highly penetrating radiation, this would be likely to cause a deep gamma insult to the body which would result in a uniform whole body irradiation rather than only a surface burn. In cases of whole body gamma irradiation due to accidents involving medical product irradiators some of the human subjects have developed injuries to their skin between the time of irradation and death.

Answer 2

Usually mutation.
One possible outcome, for example, is the formation of thymine dimers in the DNA double helix. This happens when a bond is formed between two adjacent thymine bases (on the same side of the helix). This prevents DNA polymerase from synthesizing a new strand. (There are, however, mechanisms that can break such bonds.)

Somatic = body cell. This question is not asking about how the radiation would affect germ line cells (sperm or eggs).

Answer 3

immediate effect of radiation is greenery will be spoiled small lives like butterflies etc will die and our skin gets cracks