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- Gamma radiation is a very penetrating type of radiation. It is usually emitted immediately after the ejection of an alpha or beta particle from the nucleus of an atom. Because it has no mass or charge, it can pass through the human body, but it is absorbed by denser materials, such as concrete or lead.
www.cnsc-ccsn.gc.ca/eng/resources/radiation/types-and-sources-of-radiation/
A gamma ray, also known as gamma radiation (symbol γ ), is a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei .
[show] People can be exposed to x-rays and gamma rays from 3 main sources: Natural background radiation from cosmic rays from outer space and from radioactive elements normally in rocks and soil. This is the major contributor to worldwide radiation exposure.
Gamma radiation: Gamma radiation is a very penetrating type of radiation. It is usually emitted immediately after the ejection of an alpha or beta particle from the nucleus of an atom. Because it has no mass or charge, it can pass through the human body, but it is absorbed by denser materials, such as concrete or lead. X-rays:
Gamma rays originate from the settling process of an excited nucleus of a radionuclide after it undergoes radioactive decay whereas X-rays are produced when electrons strike a target or when electrons rearrange within an atom.
beta and gamma radiation can penetrate the skin and cause damage to cells inside the body; alpha radiation will damage cells if the radioactive source has been breathed in as a gas or dust...
Gamma rays can travel thousands of feet in the air and can easily pass through the human body. Gamma rays are emitted by unstable nuclei in their transition from a high-energy state to a lower state known as gamma decay.
Historical perspective. The invention of the x-ray by Wilhem Roentgen in 1895 was a transformative moment in the history of medicine, for the first time making the inner workings of the body visible without a need to cut into the flesh. 2.
