Radioactivity
Radioactivity is a natural process where certain substances known as radionuclides emit energy in the form of particles or waves. This happens as their atomic nucleus, the core part of an atom, changes or decays. This decay can happen spontaneously, on its own, or as a result of a physical or chemical change. This emitted energy can be harmful as it can damage cells, but when controlled, it can be used in various applications like medical therapies or power generation.
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Radioactivity is the process by which unstable atomic nuclei lose energy by emitting radiation. This occurs in certain elements, like uranium or radium, which decay over time into more stable forms. As they break down, they release particles such as alpha particles, beta particles, or gamma rays. This natural phenomenon can be harnessed for various applications, including medical treatments (like cancer radiation therapy), power generation (nuclear energy), and scientific research. However, exposure to high levels of radiation can be harmful, hence the importance of safety measures when dealing with radioactive materials.