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A primary explosive is an explosive that is extremely sensitive to stimuli such as impact, friction, heat, static electricity, or electromagnetic radiation. Some primary explosives are also known as contact explosives. A relatively small amount of energy is required for initiation.
Intermittent explosive disorder (IED) or Episodic dyscontrol syndrome (EDS) is a mental and behavioral disorder characterized by explosive outbursts of anger and/or violence, often to the point of rage, that are disproportionate to the situation at hand (e.g., impulsive shouting, screaming or excessive reprimanding triggered by relatively inconsequential events).
The explosive triggering sequence or the explosive train essentially consists of an 'initiator', an 'intermediary' and the 'high explosive'. For example, a match will not cause plastic explosive to explode, but it will light a fuse coupled with a blasting cap which will detonate a primary explosive that will shock a secondary high explosive and ...
A substance is an explosive compound on its own; an article is an end user explosive product. Group A: Primary explosive substance. Group B: Article containing a primary explosive substance and not containing two or more effective protective features. Some articles, such as detonators for blasting, detonator assemblies for blasting and primers ...
During the Attack of Pearl Harbor, the USS Arizona was struck with an armor-piercing bomb which penetrated the upper deck and stopped inside the forward magazine. The bomb triggered an explosion which was powerful enough to cut the Arizona in half and is considered a sympathetic detonation as there was an apparent delay between the detonation of the bomb and the contents of the forward magazine.
Mercury(II) fulminate, or Hg(CNO) 2, is a primary explosive. It is highly sensitive to friction, heat and shock and is mainly used as a trigger for other explosives in percussion caps and detonators. Mercury(II) cyanate, though its chemical formula is identical, has a different atomic arrangement, making the cyanate and fulminate anionic isomers.
In explosives engineering, sensitivity refers to the degree to which an explosive can be initiated by impact, heat, or friction. [1] Current in-use standard methods of mechanical (impact and friction) sensitivity determination differ by the sample preparation (constant mass or volume is usually used; pile or pressed pellet), sample arrangement (confined/unconfined sample etc), instrument type ...
The name is derived from the Latin fulminātus, meaning to explode like lightening, and reflects that fulminate salts are friction-sensitive explosive due to the instability of the ion. The best known is mercury(II) fulminate , which has been used as a primary explosive in detonators .