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M 2 is useful because it reflects how well a collimated laser beam can be focused to a small spot, or how well a divergent laser source can be collimated. It is a better guide to beam quality than Gaussian appearance because there are many cases in which a beam can look Gaussian, yet have an M 2 value far from unity. [1]
The knife was designed in 1942 and officially issued on a selective basis to the Marines, with priority to elite units such as the Raiders. [2] The new knife was manufactured by the Camillus Cutlery Company, with 14,370 knives produced; a relatively small number compared to the 2.5 million M3 fighting knife units issued. [2]
If the prism's edges are perpendicular to the base, the lateral faces are rectangles, and the prism is called a right triangular prism. [3] This prism may also be considered a special case of a wedge. [4] 3D model of a (uniform) triangular prism. If the base is equilateral and the lateral faces are square, then the right triangular prism is ...
Murder Mystery 2 is a 2023 American action comedy mystery film directed by Jeremy Garelick and written by James Vanderbilt.It is a sequel to the 2019 film Murder Mystery, and it stars Adam Sandler and Jennifer Aniston with Mark Strong, Mélanie Laurent, Jodie Turner-Smith and John Kani.
The Gerber Mark II is a fighting knife manufactured by Gerber Legendary Blades from 1966 to 2000, with an additional limited run of 1500 in 2002, [1] and full production resuming as of July 2008. [2] It was designed by retired United States Army Captain, Clarence A. “Bud” Holzmann, who based the pattern on a Roman Mainz Gladius .
Knife money is much the same shape as the actual knives in use during the Zhou period. They appear to have evolved in parallel with the spade money in the north-east of China. [3] [self-published source] Qi knives: These large knives are attributed to the State of Qi, and are found in the Shandong area. They do not appear to have circulated ...
Diagram of a laser cutter Laser cutting process on a sheet of steel CAD (top) and stainless steel laser-cut part (bottom). Laser cutting is a technology that uses a laser to vaporize materials, resulting in a cut edge.
Obsidian can be used to make extremely sharp knives, and obsidian blades are a type of glass knife made using naturally occurring obsidian instead of manufactured glass. Obsidian is used by some surgeons for scalpel blades, although this is not approved by the US Food and Drug Administration (FDA) for use on humans. [ 61 ]