flat casing
51Textile preservation — refers to the processes by which textiles are cared for and maintained to be preserved from future damage. The field falls under the category of art conservation as well as library preservation, depending on the type of collection. In this case,… …
52Bullet — This article is about firearms projectiles. For other uses, see Bullet (disambiguation). Lead soft point, boat tailed, copper jacketed bullets A bullet is a projectile propelled by a firearm, sling, or air gun. Bullets do not normally contain… …
53Terminal ballistics — Terminal ballistics, a sub field of ballistics, is the study of the behavior of a projectile when it hits its target. It is often referred to as stopping power when dealing with human or other living targets. Terminal ballistics is as relevant… …
54Hand grenade — M67 fragmentation grenade, a widely used modern hand grenade. A hand grenade is any small bomb that can be thrown by hand. Hand grenades are classified into three categories, explosive grenades, chemical and gas grenades.[1] Explosive grenades… …
55CFM International CFM56 — CFM56 …
56Yellow Sun — was the first British operational high yield strategic nuclear weapon. The name actually refers only to the outer casing, the warhead (or physics package) was known as Green Grass in Yellow Sun Mk.1 and Red Snow in Yellow Sun Mk.2 . The ENI or… …
57Rolling resistance — Figure 1  Hard wheel rolling on and deforming a soft surface, resulting in the reaction force from the surface having a component that opposes the motion. Rolling resistance, sometimes called rolling friction or rolling drag, is the… …
58Keyboard technology — Keyboard construction, in four layers, of a typical notebook computer keyboard There are many types of keyboards, usually differentiated by the switch technology employed in their operation. Keyboards are defined by the number (usually about… …
59Parachute — This article is about the device. For sports involving a parachute, see Parachuting. For other meanings, see Parachute (disambiguation). Parachutes opening A parachute is a device used to slow the motion of an object through an atmosphere by… …
60List of Game & Watch games — This is a list of Game Watch games released by Nintendo, along with their format and date of release, if known. See lists of video games for related lists. Several of these games were collected and re released as ports for the Game Watch Gallery… …
