The circle in the middle of the trefoil represents an atom and the blades represent the three common types of ionizing radiation emanating from it — alpha (α), beta (β) and gamma (γ). The symbol was ...

With radiating waves, a skull and crossbones and a running person, a new ionizing radiation warning symbol is being introduced to supplement the traditional international symbol for radiation, the ...

Last updated at 17:50 15 February 2007 The UN nuclear watchdog has introduced a new radiation warning symbol showing emanating waves, a skull and crossbones, and a running person.

The old radiation symbol was certainly a timeless masterpiece of paranoid Cold War aesthetics, but it only makes sense if you already know what it means. If confronted with the relic of such a ...

The new symbol will not be visible under normal use, but only if someone attempts to disassemble a device that is a source of dangerous radiation. It will not be located on building access doors ...