The near-solid wall of air pressure produced by a nuclear explosion. Beginning at more than 2,000 miles per hour, its speed decreases rapidly with distance. Ile wind gust which travels with the blast wave and may be of many times hurricane force. A unit for measuring an amount of radiation exposure. The burst of gamma rays and neutrons sent out from the exp losion during the first minute after detonation.
Initial radiation is most deadly within about two miles of ground zero.
The radioactive debris of a nuclear explosion which eventually falls to earth in particles. The amount of fallout is enormously greater if a weapon detonates on or near the surface than if it explodes high in the air. Large amounts of earth are drawn up by the fireball. High in the sky, radio- active elements are incorporated into the earth particles, which are scattered by winds and in time fall to the ground. The radiation emitted by fallout particles.