Assertion: duck's time | /r/CapableOf | find cover
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Source sentences:
text: Depending on the yield and distance from the explosion the burst of ionizing radiation from the fireball would arrive at an observer's position at the same time as the light flash, leaving the observer little to no time to find cover from this aspect of a nuclear detonation, but subsequently some of this radiation is absorbed and re-emitted by heated fireball air molecules at lower wavelengths, so harmful ionizing radiation may continue for up to a minute during which time ducking and covering would go some way in limiting one's exposure.