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M-80s are an American class of large powerful firecrackers, sometimes called salutes. [1] M-80s were originally made in the mid 20th century for the U.S. military to simulate explosives or artillery fire. The "M" is designated by a U.S. military convention for "standard" equipment and "80" is for the 80 grains (5.2 grams) of flash powder within ...
It is reputed to be the loudest air raid siren ever produced in the US. ... and weigh an estimated 3 short tons (2.7 t). Its six horns are each 3 feet (91 cm) long. ...
The Republic XF-84H "Thunderscreech" is an American experimental turboprop aircraft derived from the F-84F Thunderstreak.Powered by a turbine engine that was mated to a supersonic propeller, the XF-84H had the potential of setting the unofficial air speed record for propeller-driven aircraft, but was unable to overcome aerodynamic deficiencies and engine reliability problems, resulting in the ...
After the enactment of the Child Safety Act of 1966, all "consumer fireworks" (those available to individuals), such as silver tube salutes, cherry bombs and M-80s, were banned, and from then on, no cherry bomb or salute could contain more than 50 milligrams of powder mixture, about 5% of the original amount. The 50 mg cherry bomb law was ...
Chinese firecracker roll being set off Large flower cracker set off at night Firecrackers set off in Sibu, Malaysia, to celebrate Chinese New Year. A firecracker (cracker, noise maker, banger [1]) is a small explosive device primarily designed to produce a large amount of noise, especially in the form of a loud bang, usually for celebration or entertainment; any visual effect is incidental to ...
The explosions constituted what was then the loudest human-made sound in history, and could be heard in London. The largest single charge was the Lochnagar mine south of La Boisselle with 60,000 lb (27 t) of ammonal explosive. The mine created a crater 300 ft (90 m) across and 90 ft (30 m) deep, with a rim 15 ft (5 m) high.
2 kno 3 + 4 al + s → k 2 s + n 2 + 2 al 2 o 3 The composition is approximately 59% KNO 3 : 31.6% Al : 9.4% S by weight for the reactants of the above stoichiometrically balanced equation. For best results, "German Dark" aluminum should be used, with air float sulfur, and finely ball milled pure potassium nitrate.
M-100's consist of a cardboard tube 2-1/8" x 3/4". Colors may vary. They contain 10 grams of flash powder that is ignited via a visco fuse positioned in the center or side of the tube. [1] In some cases, they are maxed out at 15 grams which is the physical limit for 2" x 3/4".