Radiation Warning Symbol - Trefoil Hazard Sign Explained #1397293 (License: Personal Use)

This image displays the internationally recognized radiation warning symbol, known as the trefoil, consisting of three black blades spaced at 120-degree intervals around a central circle on a bright yellow background. Designed in 1946 at the University of California, Berkeley, it conveys immediate danger from ionizing radiation and is mandated by regulatory bodies like the IAEA and OSHA. The high-contrast color scheme ensures visibility and instant recognition in hazardous environments.

Used on signage near nuclear facilities, medical radiology rooms, radioactive waste containers, and transport packaging; serves to alert personnel and the public to potential radiation exposure risks and enforce safety protocols.