Harm done by alpha, beta and gamma

Exposure to radiation can cause some serious damage on our body. The severity of these symptoms depends on several factors such as: Amount of exposure, age, whether the radiation is internal or external, the distance from the source and you. Depending on these factors the severeness may vary.

ALPHA EMISSION
 * Internal: Due to alpha having a short travel time, they will concentrate in a small area which causes the cells to die. This doesn't cause ARS (Acute Radiation Syndrome), but may lead to cancer.
 * External: Since it's travel time is so short, then it can't penetrate meaning it doesn't harm us as much. It's the least dangerous of the external radiation.