Radiation Hazard Symbol - Meaning, History, and Safety Significance #3073776 (License: Personal Use)

This image displays the international trefoil symbol for ionizing radiation, standardized by the IAEA and ISO. It features three black equilateral triangles spaced 120° apart on a yellow circular field, with a central black circle representing the radiation source. Designed in 1946 at UC Berkeley, it conveys immediate hazard recognition regardless of language or literacy level.

Used on radioactive material containers, nuclear facilities, X-ray rooms, and equipment labels to alert personnel and the public to radiation risks. Matches user intent for safety education, regulatory compliance, emergency response training, or academic research on hazard communication.