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An air burst or airburst 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. The principal military advantage of an air burst over a ground burst is that the energy from the explosion, including any shell fragments , is distributed ...
Airburst effect from 40mm round on dummy soldiers. An airburst round is a type of tactical anti-personnel and anti-aircraft explosive ammunition, typically a shell or grenade, that detonates in midair, causing air burst effect fragment damage to enemy personnel or aircraft (notably comparably unsophisticated unmanned aircraft systems such as modified racing drones).
Blast waves cause damage by a combination of the significant compression of the air in front of the wave (forming a shock front) and the subsequent wind that follows. [15] A blast wave travels faster than the speed of sound , and the passage of the shock wave usually lasts only a few milliseconds.
The creation of sparks from metals is based on the pyrophoricity of small metal particles, and pyrophoric alloys are made for this purpose. [2] Practical applications include the sparking mechanisms in lighters and various toys, using ferrocerium; starting fires without matches, using a firesteel; the flintlock mechanism in firearms; and spark testing ferrous metals.
Photopea is advertising-supported software, and offers a premium ad-free subscription. It is compatible with all modern web browsers, including Opera , Edge , Chrome , and Firefox . [ 5 ] The app is compatible with raster and vector graphics , such as Photoshop's PSD as well as JPEG , PNG , DNG , GIF , SVG , PDF and other image file formats.
Explosion of unserviceable ammunition and other military items The explosion of the Castle Bravo nuclear bomb.. An explosion is a rapid expansion in volume of a given amount of matter associated with an extreme outward release of energy, usually with the generation of high temperatures and release of high-pressure gases.
The most powerful meteor air burst in the modern era was the 1908 Tunguska event. During this event a stony meteoroid about 50–60 m (160–200 ft) in size [ 1 ] [ 2 ] : p. 178 exploded at an altitude of 5–10 km (16,000–33,000 ft) over a sparsely populated forest in Siberia .
English: Chronological sequence of the Mach-reflected detonation wave of a 20 kiloton air burst (burst height 540 metres equivalent to a maximized 15 psi or 103 kPa range) at 0.5, 1.25 and 3 seconds after detonation. The blue curve indicates the propagating shock front (refraction due to fireball is neglected here).