Radioactive Warning Symbol - Official Ionizing Radiation Hazard Sign #1532477 (License: Personal Use)

This image shows the standard ISO 361 radiation warning symbol: a bright yellow equilateral triangle with rounded corners, containing a black trefoil (three-bladed propeller) centered on a small circle. Designed in 1946 at the University of California, Berkeley, it is used globally to mark areas, containers, or equipment where radioactive materials are present or radiation is emitted.

This image is commonly used on safety signage, educational materials, regulatory documentation, and emergency response guides. It serves users seeking hazard identification, compliance information, or training resources related to nuclear safety and radiation protection.