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Hexamethylene Triperoxide Diamine
Hexamethylene triperoxide diamine (HMTD) is a high explosive organic compound. HMTD is an organic peroxide, a heterocyclic compound with a cage-like structure. It is a primary explosive. It has been considered as an initiating explosive for blasting caps in the early part of 20th century, mostly because of its high initiating power (higher than that of mercury fulminate) and its inexpensive production. As such, it was quickly taken up as a primary explosive in mining applications. However, it has since been superseded by more (chemically) stable compounds such as dextrinated lead azide and DDNP (which contains no lead or mercury). HMTD is widely used in amateur-made blasting caps. Preparation and structure First synthesised in 1885 by the German chemist Ludwig Legler, HMTD may be prepared by the reaction of an aqueous solution of hydrogen peroxide and hexamine in the presence of an acid catalyst, such as citric acid, acetic acid or dilute sulfuric acid. The hydrogen peroxide ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metre Per Second
The metre per second is the unit of both speed (a scalar (physics), scalar quantity) and velocity (a Vector (mathematics and physics), vector quantity, which has direction and magnitude) in the International System of Units (SI), equal to the speed of a body covering a distance of one metre in a time of one second. According to the definition of metre, is exactly \frac of the speed of light. The International System of Units, SI unit symbols are m/s, m·s−1, m s−1, or . Conversions is equivalent to: : = 3.6 kilometres per hour, km/h (exactly) : ≈ 3.2808 feet per second (approximately) : ≈ 2.2369 miles per hour (approximately) : ≈ 1.9438 knot (unit), knots (approximately) 1 feet per second, foot per second = (exactly) 1 miles per hour, mile per hour = (exactly) 1 kilometres per hour, km/h = (exactly) Relation to other measures The benz, named in honour of Karl Benz, has been proposed as a name for one metre per second. Although it has seen some suppor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acetone Peroxide
Acetone peroxide ( also called APEX and mother of Satan) is an organic peroxide and a primary explosive. It is produced by the reaction of acetone and hydrogen peroxide to yield a mixture of linear monomer and cyclic dimer, trimer, and tetramer forms. The monomer is dimethyldioxirane. The dimer is known as diacetone diperoxide (DADP). The trimer is known as triacetone triperoxide (TATP) or tri-cyclic acetone peroxide (TCAP). Acetone peroxide takes the form of a white crystalline powder with a distinctive bleach-like odor when impure, or a fruit-like smell when pure, and can explode powerfully if subjected to heat, friction, static electricity, concentrated sulfuric acid, strong UV radiation, or shock. Until about 2015, explosives detectors were not set to detect non-nitrogenous explosives, as most explosives used preceding 2015 were nitrogen-based. TATP, being nitrogen-free, has been used as the explosive of choice in several terrorist bomb attacks since 2001. History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Peroxides
In organic chemistry, organic peroxides are organic compounds containing the peroxide functional group (). If the R′ is hydrogen, the compounds are called hydroperoxides, which are discussed in that article. The O−O bond of peroxides easily breaks, producing free radicals of the form (the dot represents an unpaired electron). Thus, organic peroxides are useful as radical initiator, initiators for some types of polymerization, such as the Acrylic resin, acrylic, unsaturated polyester, and vinyl ester resins used in glass-reinforced plastics. methyl ethyl ketone peroxide, MEKP and benzoyl peroxide are commonly used for this purpose. However, the same property also means that organic peroxides can explosively combust. Organic peroxides, like their inorganic counterparts, are often powerful bleaching agents. Types of organic peroxides Organic peroxides are classified (i) by the presence or absence of a hydroxyl () terminus and (ii) by the presence of alkyl vs acyl substituents. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frontline (American TV Program)
''Frontline'' (stylized in all capital letters) is an investigative documentary program distributed by the Public Broadcasting Service (PBS) in the United States. Episodes are produced at WGBH in Boston, Massachusetts. The series has covered a variety of domestic and international issues, including terrorism, elections, environmental disasters, and other sociopolitical issues. Since its debut in 1983, ''Frontline'' has aired in the U.S. for 42 seasons, and has won critical acclaim and awards in broadcast journalism. In 2024, ''Frontline'' won its first Oscar at the 96th Academy Awards for Best Documentary Feature, '' 20 Days in Mariupol'', made by a team of AP Ukrainian journalists. ''Frontline'' has produced over 800 documentaries from both in-house and independent filmmakers, 200 of which are available online. Format The program debuted in 1983, with NBC anchorwoman Jessica Savitch as the show's first host, but Savitch died later after the first-season finale. ''PBS NewsH ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ProPublica
ProPublica (), legally Pro Publica, Inc., is a nonprofit investigative journalism organization based in New York City. ProPublica's investigations are conducted by its staff of full-time reporters, and the resulting stories are distributed to news partners for publication or broadcast. In some cases, reporters from both ProPublica and its partners work together on a story. ProPublica has partnered with more than 90 different news organizations and has won several Pulitzer Prizes. In 2010, ProPublica became the first online news source to win a Pulitzer Prize; the story chronicled the urgent life-and-death decisions made by one hospital's exhausted doctors when they were cut off by the floodwaters of Hurricane Katrina,''The Guardian'', April 13, 2010Pulitzer progress for non-profit newsProPublicaPulitzer Prize in Investigative Reporting: Deadly Choices at Memorial and it was published both in the ''New York Times Magazine'' Sheri Fink, ''New York Times Magazine'', August 25, 2009 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomwaffen Division
The Atomwaffen Division (''Atomwaffen'' meaning "atomic weapons" in GermanModern standard German prefers ''Kernwaffen'' () for the concept.), also known as the National Socialist Resistance Front, was an international far-right extremist and neo-Nazi terrorist network. Formed in 2015 and based in the Southern United States, it expanded across the United States and several other countries worldwide. Atomwaffen was described as "one of the most violent neo-Nazi movements in the 21st century". It was listed as a hate group by the Southern Poverty Law Center (SPLC), and it was also designated as a terrorist group by multiple governments, including the United Kingdom and Canada. Members of the Atomwaffen Division have been held responsible for a number of murders, bombings, planned terrorist attacks, and other criminal actions. History In 2015, the group's creation was announced by founding member Brandon Russell, on the Neo-fascist and Neo-Nazi web forum '' IronMarch.org'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neo-Nazi
Neo-Nazism comprises the post–World War II militant, social, and political movements that seek to revive and reinstate Nazism, Nazi ideology. Neo-Nazis employ their ideology to promote hatred and Supremacism#Racial, racial supremacy (often white supremacy), to attack racial and ethnic minorities (often antisemitism and Islamophobia), and in some cases to create a fascist state. Neo-Nazism is a global phenomenon, with organized representation in many countries and international networks. It borrows elements from Nazi doctrine, including antisemitism, ultranationalism, racism, xenophobia, ableism, homophobia, anti-communism, and creating a "Fourth Reich". Holocaust denial is common in neo-Nazi circles. Neo-Nazis regularly display Nazi symbolism, Nazi symbols and express admiration for Adolf Hitler and other Nazi leaders. In some European and Latin American countries, laws prohibit the expression of pro-Nazi, racist, antisemitic, or homophobic views. Bans on Nazi symbols, Na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2016 New York And New Jersey Bombings
On September 17–19, 2016, a series of three constructed bombs exploded and several unexploded devices were discovered in the New York metropolitan area alongside a shooting in Linden, New Jersey following a subsequent manhunt. The bombings and additional shootout left 33 people wounded, but no fatalities were reported. Federal investigators determined these explosive devices were deliberately set and identified them as part of a terrorist act. On the morning of September 17, a pipe bomb exploded in Seaside Park, New Jersey which was intended to detonate during a 5K charity race at the height of crowded venues. Later that day, a homemade pressure cooker bomb went off in the Chelsea neighborhood of Manhattan, New York City causing extensive injuries and significant property damage to adjacent buildings. A second pressure cooker bomb was discovered four blocks away. Late on September 18, multiple bombs were discovered at the train station in Elizabeth, New Jersey. One of these ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2000 Millennium Attack Plots
A series of Islamist terrorist attacks linked to al-Qaeda were planned to occur on or near January 1, 2000, in the context of millennium celebrations, including bombing plots against four tourist sites in Jordan, the Los Angeles International Airport (LAX), , and the hijacking of Indian Airlines Flight 814.Planned Jan. 2000 Attacks Failed or Were Thwarted; Plot Targeted U.S., Jordan, American Warship, Official Says , [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suicide Bombing
A suicide attack (also known by a wide variety of other names, see below) is a deliberate attack in which the perpetrators knowingly sacrifice their own lives as part of the attack. These attacks are a form of murder–suicide that is often associated with terrorism or war. When the attackers are labelled as terrorists, the attacks are sometimes referred to as an act of ''" suicide terrorism"''. While generally not inherently regulated under international law, suicide attacks in their execution often violate international laws of war, such as prohibitions against perfidy and targeting civilians. Suicide attacks have occurred in various contexts, ranging from military campaigns—such as the Japanese pilots during World War II —to more contemporary Islamic terrorist campaigns—including the September 11 attacks in 2001. Initially, these attacks primarily targeted military, police, and public officials. This approach continued with groups like al-Qaeda, which combined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Improvised Explosive Device
An improvised explosive device (IED) is a bomb constructed and deployed in ways other than in conventional warfare, conventional military action. It may be constructed of conventional military explosives, such as an artillery shell, attached to a detonating mechanism. IEDs are commonly used as roadside bombs, or homemade bombs. The term "IED" was coined by the British Army during the Northern Ireland conflict to refer to booby traps made by the Provisional Irish Republican Army, IRA, and entered common use in the U.S. during the Iraq War. IEDs are generally utilized in terrorist operations or in asymmetric warfare, asymmetric unconventional warfare or urban warfare by insurgent guerrilla warfare, guerrillas or commando forces in a theater (warfare), theatre of operations. In the Iraq War (2003–2011), Iraqi insurgency (2003–2011), insurgents used IEDs extensively against U.S.-led forces, and by the end of 2007, IEDs were responsible for approximately 63% of Multi-National ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver Acetylide
Silver is a chemical element; it has Symbol (chemistry), symbol Ag () and atomic number 47. A soft, whitish-gray, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. Silver is found in the Earth's crust in the pure, free elemental form ("native metal, native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc Refining (metallurgy), refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes bimetallism, alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of the seven metals of antiquity, silver has had an enduring role in most human cultures. Other than in currency and as an in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
