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Intensity 7 (震度7, Shindo-nana) is the highest level on the JMA seismic intensity scale, applied to earthquakes with an instrumental intensity (計測震度) of 6.5 or higher. [6] At Intensity 7, movement becomes nearly impossible without external support. [11] The intensity was created following the 1948 Fukui earthquake.
shindo._color(args) Gets the inline CSS for a particular scale's intensity color Parameters: args frame arguments () args.scale The name of the scale args.intensity The intensity of the scale ()
Seismic intensity Display; I: PEIS I (Scarcely perceptible)II: PEIS II (Slightly felt)III: PEIS III (Weak)IV: PEIS IV (Moderately strong)V: PEIS V (Strong)VI: PEIS VI (Very strong)VII ...
The chemistry of ANFO detonation is the reaction of ammonium nitrate with a long-chain alkane (C n H 2n+2) to form nitrogen, carbon dioxide, and steam.In an ideal stoichiometrically balanced reaction, ANFO is composed of about 94.5% AN and 5.5% FO by weight.
[26] [27] The XTX8003 extrudable explosive, used in the W68 and W76 nuclear warheads, is a mixture of 80% PETN and 20% of Sylgard 182, a silicone rubber. [28] It is often phlegmatized by addition of 5–40% of wax , or by polymers (producing polymer-bonded explosives ); in this form it is used in some cannon shells up to 30 mm caliber , though ...
Brisance is of practical importance in explosives engineering for determining the effectiveness of an explosion in blasting and quarrying, and in weaponry such as fragmenting shells, bomb casings, grenades, and plastic explosives. The sand crush test [2] and Trauzl lead block test are commonly used to determine the relative brisance in ...
Gelignite (/ ˈ dʒ ɛ l ɪ ɡ n aɪ t /), also known as blasting gelatin or simply "jelly", is an explosive material consisting of collodion-cotton (a type of nitrocellulose or guncotton) dissolved in either nitroglycerine or nitroglycol and mixed with wood pulp and saltpetre (sodium nitrate or potassium nitrate).
Sprengel explosives are a generic class of materials invented by Hermann Sprengel in the 1870s. [1] They consist of stoichiometric mixtures of strong oxidisers and reactive fuels , mixed just prior to use in order to enhance safety.