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A bullet traveling at only 61 m/s (200 feet per second or 135 miles per hour) to 100 m/s (330 feet per second or 225 miles per hour) can penetrate human skin. [ 16 ] Any gunfire can damage hearing of those nearby without ear protection, and blank rounds fired in an unsafe direction can cause injuries or death from muzzle blast at close range ...
The Christmas Bullet, later known as the Cantilever Aero Bullet (sometimes referred to as the Christmas Strutless Biplane), was an American single-seat cantilever wing biplane. It is considered by many to be among the worst aircraft ever constructed for its time.
A ballistic tip bullet is a hollow-point rifle bullet that has a plastic tip on the end of the bullet. This improves external ballistics by streamlining the bullet, allowing it to cut through the air more easily, and improves terminal ballistics by allowing the bullet to act as a jacketed hollow point.
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Bulletproof vests work by dissipating the bullet's energy in another way; the vest's material, usually Aramid (Kevlar or Twaron), works by presenting a series of material layers which catch the bullet and spread its imparted force over a larger area, hopefully bringing it to a stop before it can penetrate into the body behind the vest.
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Probability of bullet penetration increases as the axis of bullet movement becomes perpendicular to the target surface; but penetration may create a depression or crater within which the bullet may ricochet more than once, possibly following the arc of the crater floor to depart the crater at a greater angle from the original surface than the ...
This logo image consists only of simple geometric shapes or text. It does not meet the threshold of originality needed for copyright protection, and is therefore in the public domain . Although it is free of copyright restrictions, this image may still be subject to other restrictions .