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Radioactive Symbol - Universal Warning Sign for Ionizing Radiation Hazards #281453 (License: Personal Use)

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Black trefoil radiation hazard symbol on white background, indicating ionizing radiation risk.

About this clipart

This is the international standard radiation hazard symbol, known as the trefoil, adopted by the IAEA and used globally to mark radioactive materials, equipment, or areas. Designed in 1946 at the University of California, Berkeley, its three-blade design represents radiation emitted from an atom’s nucleus in alpha, beta, and gamma forms. The stark black-on-white contrast ensures high visibility and immediate recognition for safety compliance.
Used on signage, packaging, lab equipment, and nuclear facilities to alert personnel and the public to radiation risks; matches user intent for safety education, regulatory compliance, or scientific illustration.
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Related Cliparts: The iconic black-and-yellow (here monochrome) trefoil symbol warns of ionizing radiation hazards. Learn its history, meaning, and safety implications.

(view all Radioactive Symbol - Universal Warning Sign for Ionizing Radiation Hazards)

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