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Plastic Explosives
Plastic explosive is a soft and hand-moldable solid form of explosive material. Within the field of explosives engineering, plastic explosives are also known as putty explosives or blastics. Plastic explosives are especially suited for explosive demolition. Common plastic explosives include Semtex and C-4. The first manufactured plastic explosive was gelignite in 1875, invented by Alfred Nobel. Usage Plastic explosives are especially suited for explosive demolition of obstacles and fortifications by combat engineers as they can be easily formed into ideal shapes for cutting structural members and have a high enough velocity of detonation and density for metal cutting work. An early use of plastic explosives was in the warhead of the Petard demolition mortar of the British Armoured Vehicle Royal Engineers (AVRE) which was used to destroy concrete fortifications encountered during Operation Overlord (D-Day). The original use of Nobel 808 supplied by the SOE was for sabotag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Preparation Of The Demolition With Explosive Charges And Wire (22731570152)
Preparation may refer to: * Preparation (dental), the method by which a tooth is prepared when removing decay and designing a form that will provide adequate retention for a dental restoration * Preparation (music), treatment of dissonance in tonal music * Preparation, Iowa, a ghost town * Preparation time, time to prepare speeches in policy debate * ''The Preparation'', a 2017 South Korean film * Preparations (album), ''Preparations'' (album), a 2007 album by Prefuse 73 * Prepared dosage form * Prepared drug * Prepared food * Prepared Dietary supplement, supplement * Special modifications to instruments, see **Prepared piano **Prepared guitar *Fossil preparation See also * Preparation H, popular hemorrhoids medicine * Preparation for the Gospel, early Christian book * * Prep (other) * Preparationism * Prepare (other) * Preparedness (other) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rock Blasting
Drilling and blasting is the controlled use of explosives and other methods, such as gas pressure blasting pyrotechnics, to break rock for excavation. It is practiced most often in mining, quarrying and civil engineering such as dam, tunnel or road construction. The result of rock blasting is often known as a rock cut. Drilling and blasting currently utilizes many different varieties of explosives with different compositions and performance properties. Higher velocity explosives are used for relatively hard rock in order to shatter and break the rock, while low velocity explosives are used in soft rocks to generate more gas pressure and a greater heaving effect. For instance, an early 20th-century blasting manual compared the effects of black powder to that of a wedge, and dynamite to that of a hammer. The most commonly used explosives in mining today are ANFO based blends due to lower cost than dynamite. Before the advent of tunnel boring machines (TBMs), drilling and b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Special Operations Executive
Special Operations Executive (SOE) was a British organisation formed in 1940 to conduct espionage, sabotage and reconnaissance in German-occupied Europe and to aid local Resistance during World War II, resistance movements during World War II. SOE personnel operated in all territories occupied or attacked by the Axis powers, except where demarcation lines were agreed upon with Britain's principal Allies of World War II, Allies, the United States and the Soviet Union. SOE made use of neutral territory on occasion, or made plans and preparations in case neutral countries were attacked by the Axis. The organisation directly employed or controlled more than 13,000 people, of whom 3,200 were women. Both men and women served as agents in Axis-occupied countries. The organisation was dissolved in 1946. A memorial to those who served in SOE was unveiled in 1996 on the wall of the west cloister of Westminster Abbey by the Queen Elizabeth The Queen Mother, Queen Mother, and in 2009 on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasticine
Plasticine is a putty-like modelling material made from calcium salts, petroleum jelly and aliphatic acids. Though originally a brand name for the British version of the product, it is now applied generically in English as a product category to other formulations. Plasticine is used for children's play and as a modelling medium for more formal or permanent structures. Because of its non-drying property, it is a material commonly chosen for stop motion animation, including several Academy Award-winning films by Nick Park. History Franz Kolb, owner of a pharmacy in Munich, Germany, invented an oil-based modelling clay in 1880. At the time, the city was a centre for the arts, and among Kolb's circle of friends were sculptors. They complained about how with the clay they were using for modelling, their sculptures would dry too fast and that, particularly in winter, it was too difficult to work with. In order to commercialize his invention, he presented it to the Faber-Caste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nobel Chemicals Ltd
Nobel Enterprises () is a chemicals business that used to be based at Ardeer, in the Ayrshire town of Stevenston, in Scotland. Specialising in nitrogen-based propellants and explosives and nitrocellulose-based products such as varnishes and inks. It was formerly ICI Nobel, a division of the chemicals group ICI, but was then sold to Inabata, a Japanese trading firm. The business was sold on to Chemring Group in 2005 and is now a Scottish Company (Chemring Energetics UK Ltd), part of Chemring Group. Stefan Donald is currently the lead engineer for the ongoing regeneration project. History Nobel Industries Limited was founded in 1870 by Swedish chemist and industrialist Alfred Nobel for the production of the new explosive dynamite in the United Kingdom. The factory was overseen and run by George McRoberts. McRoberts and John Downie raised the £24,000 needed to found the company rather than Nobel himself. It was chaired by the Glasgow shipbuilder, Charles Randolph (1809-1878). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second World War
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Armed Forces
The British Armed Forces are the unified military, military forces responsible for the defence of the United Kingdom, its British Overseas Territories, Overseas Territories and the Crown Dependencies. They also promote the UK's wider interests, support international peacekeeping efforts and provide humanitarian aid. The force is also known as His Majesty's Armed Forces. Since the formation of the united Kingdom of Great Britain in 1707 (later succeeded by the United Kingdom of Great Britain and Ireland, and finally by the United Kingdom of Great Britain and Northern Ireland), the British Armed Forces have seen action in most major wars involving the world's great powers, including the Seven Years' War, the American Revolutionary War, American War of Independence, the Napoleonic Wars, the Crimean War, the First World War and the Second World War. Britain's victories in most of these wars allowed it to influence world events and establish itself as one of the world's leading mili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collodion
Collodion is a flammable, syrupy solution of nitrocellulose in Diethyl ether, ether and Alcohol (chemistry), alcohol. There are two basic types: flexible and non-flexible. The flexible type is often used as a surgical dressing or to hold dressings in place. When painted on the skin, collodion dries to form a flexible nitrocellulose film. While it is initially colorless, it discolors over time. Non-flexible collodion is often used in theatrical make-up. Collodion was also the basis of most Collodion process, wet-plate photography until it was superseded by modern gelatin emulsions. History In 1846, Louis-Nicolas Ménard and Florès Domonte discovered that cellulose nitrate could be dissolved in diethyl ether, ether. They devised a mixture of ether as the solvent and ethanol as a diluent that rendered cellulose nitrate into a clear gelatinous liquid. Collodion was first used medically as a dressing in 1847 by the Boston physician John Parker Maynard. The solution was dubbed "collodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aromaticity
In organic chemistry, aromaticity is a chemical property describing the way in which a conjugated ring of unsaturated bonds, lone pairs, or empty orbitals exhibits a stabilization stronger than would be expected from conjugation alone. The earliest use of the term was in an article by August Wilhelm Hofmann in 1855. There is no general relationship between aromaticity as a chemical property and the olfactory properties of such compounds. Aromaticity can also be considered a manifestation of cyclic delocalization and of resonance. This is usually considered to be because electrons are free to cycle around circular arrangements of atoms that are alternately single- and double- bonded to one another. This commonly seen model of aromatic rings, namely the idea that benzene was formed from a six-membered carbon ring with alternating single and double bonds (cyclohexatriene), was developed by Kekulé (see History section below). Each bond may be seen as a hybrid of a single bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oswald Silberrad
Oswald J. Silberrad (1878 – 17 June 1960) was a British chemist who specialised in explosives, the related field of dye stuffs, and metallurgy. Life and works Silberrad was born at Buckhurst Hill in Essex and was the younger brother of the writer Una Lucy Silberrad. He studied chemistry at the City and Guilds Technical College. From 1898 to 1900 he attended the University of Würzburg. On leaving Würzburg he worked at various positions until he joined the United Kingdom Government Explosives Committee. This committee had been set up after the Boer War to investigate the shortcomings of British explosives. In 1901, at the age of 23, Silberrad was appointed chemist to the committee. Later he took the position as head of the committee’s research institute at Woolwich. One of his contributions was to bring TNT into use as an explosive for Royal Navy ordnance, thus following a practice that was already well known in Germany. In 1906 he left the institute, and in 1907 found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War I
World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting took place mainly in European theatre of World War I, Europe and the Middle Eastern theatre of World War I, Middle East, as well as in parts of African theatre of World War I, Africa and the Asian and Pacific theatre of World War I, Asia-Pacific, and in Europe was characterised by trench warfare; the widespread use of Artillery of World War I, artillery, machine guns, and Chemical weapons in World War I, chemical weapons (gas); and the introductions of Tanks in World War I, tanks and Aviation in World War I, aircraft. World War I was one of the List of wars by death toll, deadliest conflicts in history, resulting in an estimated World War I casualties, 10 million military dead and more than 20 million wounded, plus some 10 million civilian de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
This Image Shows The Pile Of UXO And A Box Of The PE4 Explosive, Which Was Used To Detonate The Deadly Munitions
This may refer to: * ''This'', the singular proximal demonstrative pronoun Places * This (Egypt), or ''Thinis'', an ancient city in Upper Egypt * This, Ardennes, a commune in France * This, a country mentioned in the ''Periplus of the Erythraean Sea'', likely China Arts, entertainment, and media Music Albums * ''This'' (Peter Hammill album) (1998) * ''This'' (The Motels album) (2008) * '' This (Is What I Wanted to Tell You)'', a 2019 album by American band Lambchop Songs * "This" (song), a 2010 song by Darius Rucker * "This", a 2015 song by Collective Soul from '' See What You Started by Continuing'' * "This", a 2011 song by Ed Sheeran from '' +'' * "This", a 1993 song by Hemingway Corner * "This", a 2021 song by Megan McKenna * "This", a 1995 song by Rod Stewart from ''A Spanner in the Works'' * "This", a 2023 song by band OK Go Periodicals * ''This'' (Canadian magazine), a political journal * ''This'' (journal), a poetry journal published in the US from 1971–1982 Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
