Radiation Hazard Symbol - Universal Warning Sign for Ionizing Radiation #1729718 (License: Personal Use)

This image displays the internationally recognized radiation hazard symbol, also known as the trefoil, consisting of three black blades arranged at 120-degree angles around a central circle on a bright yellow background. Designed in 1946 at the University of California, Berkeley, it has since become the standard warning for radioactive materials and ionizing radiation sources. Its high-contrast design ensures visibility and immediate recognition in safety-critical environments.

Used on signage, equipment, containers, and documentation in nuclear power plants, medical radiology departments, research labs, and transport packaging to alert personnel and the public to radiation risks. Matches user intent for safety information, regulatory compliance, or educational material about radiation hazards.