
An air burst is the detonation of an explosive device such as an anti-personnel artillery shell or a nuclear weapon in the air instead of on contact with the ground or target or a delayed armor piercing explosion. The principal military advantage of an air burst over a ground burst is that the energy from the explosion (as well as any shell fragme...
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http://en.wikipedia.org/wiki/Air_burst

a nuclear weapon explosion that is high enough in the air to keep the fireball from touching the ground. Because the fireball does not reach the ground and does not pick up any surface material, the radioactivity in the fallout from an air burst is relatively insignificant compared with a surface burst. For more information, see Chapter 2 of CDC
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http://www.encyclo.co.uk/local/21808
No exact match found.