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Essential parts of a cannon: 1. the projectile or cannonball (shot) 2. gunpowder 3. touch hole (or vent) in which the fuse or other ignition device is inserted. Round shot or solid shot or a cannonball or simply ball. A solid spherical projectile made, in early times, from dressed stone but, by the 17th century, from iron.
Little Round Top is a large diabase spur of Big Round Top [1] with an oval crest that forms a short ridgeline with a summit of 63 ft (19 m) prominence above the saddle point [2] to Big Round Top to the south. It is located in Cumberland Township, approximately two miles (3 km) south of Gettysburg, with a rugged, steep slope rising 150 feet (46 ...
High-explosive anti-tank. High-explosive anti-tank ( HEAT) is the effect of a shaped charge explosive that uses the Munroe effect to penetrate heavy armor. The warhead functions by having an explosive charge collapse a metal liner inside the warhead into a high-velocity shaped charge jet; this is capable of penetrating armor steel to a depth of ...
A shaped charge is an explosive charge shaped to focus the effect of the explosive's energy. Different types of shaped charges are used for various purposes such as cutting and forming metal, initiating nuclear weapons, penetrating armor, or perforating wells in the oil and gas industry . A typical modern shaped charge, with a metal liner on ...
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At times, particularly at very close range, artillery crews would fire extremely lethal "double canister," where two rounds were loaded into the gun tube and fired simultaneously using a single charge. At the Battle of Waterloo, in 1815, Mercer's Troop, Royal Horse Artillery, fired a roundshot and a canister from each gun as a double-shot. The ...
The round is a 105 mm (4.1 in) tandem shaped charge with a weight of 10.3 kg (23 lb) and has a range of 200 m (660 ft) and a stated penetration capability in excess of 600 mm (24 in) rolled homogeneous armor (RHA) (after ERA), 1,500 mm (59 in) reinforced concrete, 2,000 mm (79 in), and 3,700 mm (150 in) of soil.
The American Crossword Puzzle Tournament (ACPT) is a crossword-solving tournament held annually in February, March, or April. Founded in 1978 by Will Shortz , who still directs the tournament, it is the oldest and largest crossword tournament held in the United States ; the 2023 event set an attendance record with more than 750 competitors.