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Bullet Hole is the title of a 1988 artwork by British artist Mat Collishaw. Despite the title, the work is a reproduction of an ice pick wound to the head, appropriated from a pathology manual and blown up over an interlocking grid of fifteen separate framed images that make up one single work.
Bullet parts: 1 metal jacket, 2 lead core, 3 steel penetrator. Terminal ballistics is a sub-field of ballistics concerned with the behavior and effects of a projectile when it hits and transfers its energy to a target. Bullet design (as well as the velocity of impact) largely determines the effectiveness of penetration. [1]
His best known work is Bullet Hole (1988), which is a closeup photo of what appears to be a bullet hole wound in the scalp of a person's head, mounted on 15 light boxes. Collishaw took the original image from a pathology textbook that actually showed a wound caused by an ice pick . [ 2 ]
[21] [22] [23] The bullet holes in the returning aircraft represented areas where a bomber could take damage and still fly well enough to return safely to base. Therefore, Wald proposed that the Navy reinforce areas where the returning aircraft were unscathed, [ 20 ] : 88 inferring that planes hit in those areas were the ones most likely to be ...
The outcome of a score gauging is binary; either the bullet hole is assigned a scoring value or not. A bullet hole that doesn't touch a scoring edge does not need to be gauged, but bullet holes that touch a scoring edge often need to be gauged. These touching-an-edge situations can be classified into five scenarios:
Tightness of shot groupings are calculated by measuring the maximum distance between any two bullet holes on the target (center-to-center) in length measurements such as millimeters or inches. Often that measurement is converted into angular measurements such as milliradians ("mils" or "mrads") or minutes of angle (MOAs), which expresses the ...
Some bullet jackets do not extend to the front of the bullet, to aid expansion and increase lethality; these are called soft point (if the exposed lead tip is solid) or hollow point bullets (if a cavity or hole is present). Steel bullets are often plated with copper or other metals for corrosion resistance during long periods of storage.
Professional pilot David Lombardo states that a bullet hole would have no perceived effect on cabin pressure as the hole would be smaller than the opening of the aircraft's outflow valve. [70] NASA scientist Geoffrey A. Landis points out though that the impact depends on the size of the hole, which can be expanded by debris that is blown ...