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In detonation, the flame front travels through the air-fuel faster than sound; while in deflagration, the flame front travels through the air-fuel slower than sound. Detonations occur in both conventional solid and liquid explosives, [3] as well as in reactive gases. TNT, dynamite, and C4 are examples of high power explosives that detonate.
The blast measured 3.4 on the Richter scale, [2] with an estimated power equivalent to 20-40 tons of TNT. [1] The explosion was heard 80 km (50 miles) away. Due to the acoustics of the hills and the loud sound, the explosion was reported as occurring in multiple places. Police at first believed that at least five bombs had simultaneously gone off.
On 19 January 1917, parts of Silvertown in East London were devastated by a TNT explosion at the Brunner-Mond munitions factory. The explosion killed 73 people and injured hundreds. The blast was felt across London and Essex and was heard more than 100 mi (160 km) away, with the resulting fires visible for 30 mi (50 km).
A spherical charge of 50 short tons (45 t) of TNT was detonated on a tower 136 feet (41 m) above ground level and 69 feet (21 m) above the rainforest canopy. After the explosion, troops were moved through the area (which was now covered in up to a metre of leaf litter), to test their ability to transit across the debris. In addition, obsolete ...
An explosion of more than 500 tons of TNT (2,100 GJ) would vaporize the steel and make it difficult to measure the thermal effects. Even 100 tons of TNT (420 GJ) would send fragments flying, presenting a hazard to personnel and measuring equipment. [44] It was therefore decided not to use it. [43]
A blast wave travels faster than the speed of sound, and the passage of the shock wave usually lasts only a few milliseconds. Like other types of explosions, a blast wave can also cause damage to things and people by the blast wind, debris, and fires. The original explosion will send out fragments that travel very fast.
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.
Nitrogen triiodide explosion. A contact explosive is a chemical substance that explodes violently when it is exposed to a relatively small amount of energy (e.g. friction, pressure, sound, light). Though different contact explosives have varying amounts of energy sensitivity, they are all much more sensitive relative to other kinds of explosives.