Gamma radiation is a type of high-energy electromagnetic radiation, similar to X-rays but with even more energy. It is produced by the decay of atomic nuclei during radioactive processes. Gamma rays can penetrate most materials, making them useful in various applications, including medical imaging and cancer treatment. Due to their high energy, gamma rays can be harmful to living tissues. They can damage cells and DNA, which is why safety precautions are essential when working with sources of gamma radiation. Understanding gamma radiation is crucial in fields like nuclear medicine and radiation safety.