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A shaped charge is an explosive charge shaped to focus the effect of the explosive's energy. Various types are used to penetrate tank armor; typical modern lined shaped charge can penetrate steel armor [ clarification needed ] to a depth of seven or more times the diameter of the charge (charge diameters, CD), though greater depths of 10 CD and ...
The result, given in cm 3, is called the Trauzl number of the explosive. The Trauzl test is not useful for some modern higher-powered explosives as their power often cracks or otherwise ruptures the lead block, leaving no hole to measure. [2] A variant of the test uses an aluminium block to avoid exposure of participants to lead-related hazards.
A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one letter, while the black squares are used to ...
The video game Minecraft released a version of Minesweeper in its 2015 April Fool's update. [13] The HP-48G graphing calculator includes a variant called "Minehunt", where the player has to move safely from one corner of the playfield to the other. The only clues given are how many mines are in the squares surrounding the player's current ...
Boom Blox is a 2008 puzzle video game by Electronic Arts for the Wii and N-Gage. [5] [6] It was developed by EA Los Angeles and directed by filmmaker Steven Spielberg.[7]The game presents a series of physics-based puzzles, the objective being either to keep structures made of blocks from being knocked down or to knock them over by various means, using the Wii Remote to throw, shoot, and grab ...
Markus Alexej Persson was born in Stockholm, Sweden, to a Finnish mother, Ritva, [2] and a Swedish father, Birger, [3] on 1 June 1979. [4] [5] [2] He has one sister.[2] [6] He grew up in Edsbyn until he was seven years old, when his family moved back to Stockholm.
It is a secondary explosive, meaning it is more difficult to detonate than primary explosives, so dropping or igniting it will typically not cause an explosion (at standard atmospheric pressure it is difficult to ignite and burns vigorously), but is more sensitive to shock and friction than other secondary explosives such as TNT or tetryl.
A squib generally consists of a small tube filled with an explosive substance, with a detonator running through the length of its core, similar to a stick of dynamite. Also similar to dynamite, the detonator can be a slow-burning fuse , or as is more common today, a wire connected to a remote electronic trigger . [ 3 ]