Radiation Hazard Symbol - Universal Warning Sign for Radioactive Materials #48554 (License: Personal Use)

This image displays the standard radiation hazard symbol (trefoil), consisting of three yellow blades arranged at 120-degree angles around a central circle, set against a black background. Adopted in 1946 at the University of California, Berkeley, it signifies the presence of ionizing radiation and is used globally on containers, doors, equipment, and signage in nuclear facilities, medical imaging, and research labs. Its high-contrast design ensures immediate recognition and compliance with international safety standards (ISO 361, ANSI Z535).

Used in safety documentation, regulatory compliance pages, educational content about nuclear physics or radiological protection, and emergency response guides. Matches user intent for identifying, understanding, or implementing radiation safety measures.