Hopefully, it doesn't. Gamma radiation is the most harmful for of radiation there is, but luckily there are very few sources of it that can leak into a populated area.
it can kill cancer cells
Light is the most well known form. However, humans can not sense any other electromagnetic radiation. (e.g. gamma rays x-rays infra-red ultraviolet etc.) the human eye can only see a fraction of the full electromagnetic spectrum.
Electromagnetic radiation having a wavelengths between 380 - 750nm is visible to the normal human eye. This region of the spectrum is called visible light. Radiation of any other wavelength cannot be seen with the naked eye
The excretory system is beast
Xray.
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Gamma radiation
Gamma radiation. Alpha radiation is the least penetrating, beta radiation penetrates and lasts longer than alpha but also "dies out" relatively quickly, but Gamma radiation will not only penetrate deep, but it will also stay long.
Gamma rays can cause radiation sickness and cancer in humans.
becouse the human activities also produced as a result radiation orginate
The typical use for human-generated gamma radiation is in medical procedures, such as the "gamma knife" cancer therapy treatments.
Gamma radiation is simple a very high-frequency form of electromagnetic radiation (essentially, a high-frequency form of light which is invisible to the human eye). As such it carries no electric charge; it is neutral.
Gamma radiation, X Rays
No. Gamma rays are similar to X-rays in that they can penetrate deep into the human body. Gamma rays are electromagnetic radiation which is produced by the decay of some radioisotopes and from nuclear reactions. A form of radiation which will be blocked by the skin is alpha particles, which are helium nuclei.
Gamma Radiation penetrates farther than x-rays, which are partly absorbed by thick material such as bones.
Gamma radiation is not easily absorbed by the human body(not as easily as alpha and beta anyway). So it can penetrate to the internal organs and harm them.
Generally no radiation is safe. You cannot "inject" radiation into anything because it is the product of various unstable nuclei decaying. Alpha radiation is much more ionising than gamma, but much less penetrating than it. That makes it more dangerous if it is inside your body; it can be stopped by skin. Therefore you would have to swallow a sample of a radioactive material. However, gamma radiation is always emitted together with alpha or beta radiation.
Gamma rays are a form of electromagnetic radiation, essentially just a high-frequency form of light invisible to human eyes. Like all light, gamma rays do not carry any electrical charge.