TNT Equivalent

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TNT equivalent

[¦te‚en¦tē i′kwiv·ə·lənt]
A measure of the energy released in the detonation of a nuclear weapon, expressed in terms of the weight of TNT that would release the same amount of energy when exploded; usually expressed in kilotons or megatons of TNT; based on the release of 109 calories (approximately 4.18 × 109 joules) of energy by 1 ton of TNT.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

TNT Equivalent


the mass of a conventional charge of a chemical explosive—trinitrotoluene, or TNT—whose energy of explosive decomposition is equal to the energy released in a given nuclear explosion. The TNT equivalent characterizes the explosive power of nuclear and thermonuclear charges and is calculated according to the formula

where Qne is the energy released in the nuclear explosion and QTNT is the explosive energy of 1 ton of trinitrotoluene; it is measured in kilotons and megatons.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The Director of Asaish in the district, Othman Mohamed said in a press statement today, "a car, loaded with 2 tons of TNT, has been seized on the main road between Sheikh Langer area to Kalar in Kifri district."
The horizontal explosion in the Caribbean clouds released additional energy equal to that of one or two Hiroshima bombs, which were equivalent to 20,000 tons of TNT apiece.
e bomb contained the equivalent of 15,000 tons of TNT. It devastated an area of ve square miles, destroying more than 60% of the city's buildings.
After a previously undetected, 20-meter-wide asteroid exploded over Russia in February 2013, unleashing the force of 500,000 tons of TNT, the National Aeronautics and Space Administration launched a series of contests around the globe to come up with ways to keep an eye on asteroids that could threaten Earth, SBS reported.
The impact energy was equivalent to an explosion of roughly 15 tons of TNT, at least three times higher than the largest previously seen event observed by NASA in March last year.
The vast majority of it was likely vaporized or pulverized to dust when it slammed into the atmosphere and released the kinetic energy equivalent of about 500,000 tons of TNT, or about 30 times the explosive power of the Hiroshima atomic bomb.
Speeding at some 40,000 mph, it released energy equal to 500,000 tons of TNT. A larger asteroid, perhaps two or three times the diameter of the Chelyabinsk one, exploded above the Tunguska River in Siberia in 1908 and is estimated to have released energy equivalent to 5 million to 15 million tons of TNT, flattening millions of trees.
After reviewing digital recordings made by one of the program's telescopes, scientists determined the space rock was about 1 foot (0.3 meters) in diameter, and traveling about 56,000 mph (90,123 kph) when it slammed into the moon and exploded with the force of five tons of TNT. That same night, cameras detected an unusually high number of meteors blasting through Earth's atmosphere as well.
A small celestial object around 60 metres in size entered the Earth's atmosphere at hypersonic speed, exploding at high altitude releasing energy equivalent to 10-15 million tons of TNT. The unexpected collision which happened on Friday, 2013 February 15 was not so dissimilar to the Tunguska event in that it took place not far from Siberia, specifically over the city of Chelyabinsk in the Urals (see map on the front cover).
Fragments of the asteroid caused an explosion equivalent to 500,000 tons of TNT when they hit.
The Threshold Test Ban Treaty, signed in 1974, banned underground nuclear weapons tests having an explosive force of more than 150 kilotons, the equivalent of 150,000 tons of TNT, 10 times the force of the Hiroshima bomb.
The explosions engulfed explosive processing facilities with 2 500 metric tons of conventional munitions and 20 tons of TNT. Nobody got injured but the residents of the villages of Chelopech and Chepintsi, deemed districts of Sofia, were evacuated.