Radioactive Hazard Symbol - Universal Warning Sign for Ionizing Radiation #1327245 (License: Personal Use)

This image displays the standard ISO 361 radiation warning symbol: a black trefoil (three-bladed propeller) centered on a yellow circle with a subtle gradient glow, indicating ionizing radiation hazards. Designed in 1946 at the University of California, Berkeley, it is universally used on containers, equipment, and facilities handling radioactive substances. The high-contrast color scheme ensures visibility and immediate recognition for safety compliance.

Used on nuclear facility signage, radioactive material packaging, lab equipment labels, and educational safety materials; matches user intent for hazard awareness, regulatory compliance, or academic research on radiation safety.