Radioactive Symbol - Universal Ionizing Radiation Warning Sign #191497 (License: Personal Use)

This image displays the universally recognized radioactive warning symbol, also known as the trefoil, consisting of three green blades arranged at 120-degree angles around a central circle, set against a black background. Designed in 1946 at the University of California, Berkeley, it conveys immediate danger from ionizing radiation and is mandated by international standards such as ISO 361 and IAEA regulations. Its high-contrast color scheme ensures visibility and rapid recognition in hazardous environments.

This image is commonly used on safety signage, educational materials, nuclear facility documentation, emergency response guides, and regulatory compliance pages. It serves users seeking hazard identification, radiation safety training, or regulatory information-matching intent for awareness, prevention, and compliance.