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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 test is performed by loading a 10-gram foil-wrapped sample of the explosive into a hole drilled into a lead block with specific dimensions and properties (a soft lead cylinder, 200 mm diameter and 200 mm high, with the hole 125 mm deep, and 25 mm diameter). [1] The hole is then topped up with sand, and the sample is detonated electrically ...
A creeper is a fictional creature in the sandbox video game Minecraft.Creepers are hostile mobs (mobile non-player characters) that spawn in dark places.Instead of attacking the player directly, they creep up on the player and explode, destroying blocks in the surrounding area and potentially hurting or killing the player if they are within the blast radius.
Each block was carefully fitted into a pre-calculated position to approximate a perfect hemisphere. [3] When completed the stack measured 34 feet (10 m) in diameter. [2] Columns were drilled 80 feet (24 m) into the ground at the blast site and then back filled with a coloured soil mix to measure the expected horizontal and vertical displacement.
Explosive energy is released directly away from the surface of an explosive, so shaping the explosive will concentrate the explosive energy in the void. If the hollow is properly shaped, usually conically, the enormous pressure generated by the detonation of the explosive drives the liner in the hollow cavity inward to collapse upon its central ...
The velocity of detonation is an important indicator for overall energy and power of detonation, and in particular for the brisance or shattering effect of an explosive which is due to the detonation pressure. The pressure can be calculated using Chapman-Jouguet theory from the velocity and density.
Memorable Events/Puzzles: A puzzle that used an interactive Virtual Earth map to locate items hidden on campus (two members of the organizing team had to fly an airplane over the Microsoft campus with a high-resolution digital camera to get the level of detail down to 3 cm per pixel, allowing each puzzle answer to indicate a 6-foot square ...
detection rate of explosives and/or explosive precursor components; the false positive rate; the effective range; the detection depths in various soils; foliage penetration capability; type of explosive and/or explosive precursor component that the system is capable of detecting (metal, non-metal, radio controlled, etc.) impacts of different ...