Radiation protection refers to the measures taken to safeguard people and the environment from harmful effects of ionizing radiation. This type of radiation can come from natural sources, like cosmic rays and radon gas, or from man-made sources, such as medical imaging and nuclear power plants. Effective radiation protection involves limiting exposure time, increasing distance from the source, and using shielding materials. Key principles of radiation protection include time, distance, and shielding. Reducing the time spent near a radiation source decreases exposure, while increasing distance minimizes the intensity of radiation received. Shielding involves using materials like lead or concrete to block radiation, ensuring safety for workers and the public.