Nuclear radiation refers to the energy and particles released during the decay of unstable atomic nuclei. This process can emit different types of radiation, including alpha particles, beta particles, and gamma rays. These emissions can occur naturally, as seen in elements like uranium and radon, or can be produced artificially in nuclear reactors and during nuclear weapons tests. Radiation can interact with matter, potentially causing damage to living cells. While low levels of radiation are common in our environment, excessive exposure can lead to health risks, including radiation sickness and an increased chance of cancer. Understanding nuclear radiation is essential for safety in medical, industrial, and energy applications.