Radiological protection refers to the measures and practices designed to safeguard people and the environment from harmful effects of ionizing radiation. This includes radiation emitted from sources such as nuclear power plants, medical imaging equipment, and radioactive materials. The goal is to minimize exposure while allowing the beneficial uses of radiation in medicine, industry, and research. Key principles of radiological protection include justification, optimization, and dose limitation. Justification ensures that any activity involving radiation is necessary and beneficial. Optimization involves reducing radiation exposure to the lowest possible levels, while dose limitation sets maximum allowable exposure levels for workers and the public to ensure safety.