Nuclear Symbol - Radiation Hazard Warning Icon #182075 (License: Personal Use)

This is the standard radiation warning symbol, known as the trefoil, consisting of a central circle with three black blades spaced at 120-degree intervals, enclosed by concentric rings. Designed in 1946 at the University of California, Berkeley, it conveys danger from ionizing radiation and is mandated by international safety standards. The high-contrast black-on-white design ensures visibility and immediate recognition in hazardous environments.

Used on signage, packaging, lab equipment, and nuclear facilities to alert personnel and the public to radiation hazards; matches user intent for safety compliance, emergency response, or educational content about nuclear risks.