New Articles (Page 121)

To stay up to date you can also follow on Mastodon.

πŸ”— Thermobaric Weapon

πŸ”— Technology πŸ”— Military history πŸ”— Military history/Military aviation πŸ”— Military history/Military science, technology, and theory πŸ”— Military history/Weaponry πŸ”— Explosives

A thermobaric weapon, aerosol bomb, or vacuum bomb is a type of explosive that uses oxygen from the surrounding air to generate a high-temperature explosion. In practice, the blast wave typically produced by such a weapon is of a significantly longer duration than that of a conventional condensed explosive. The fuel–air explosive is one of the best-known types of thermobaric weapon.

Most conventional explosives consist of a fuel–oxidizer premix (black powder, for example, contains 25% fuel and 75% oxidizer), but thermobaric weapons are almost 100% fuel and so are significantly more energetic than conventional condensed explosives of equal weight. Their reliance on atmospheric oxygen makes them unsuitable for use under water, at high altitude, and in adverse weather. They are, however, considerably more destructive when used against field fortifications such as foxholes, tunnels, bunkers, and caves, partly because of the sustained blast wave and partly by the consumption of the oxygen inside it.

Many types of thermobaric weapons can be fitted to hand-held launchers.

Discussed on

πŸ”— White Hole

πŸ”— Physics πŸ”— Astronomy πŸ”— Physics/relativity πŸ”— Astronomy/Astronomical objects

In general relativity, a white hole is a hypothetical region of spacetime and singularity that cannot be entered from the outside, although energy-matter, light and information can escape from it. In this sense, it is the reverse of a black hole, which can be entered only from the outside and from which energy-matter, light and information cannot escape. White holes appear in the theory of eternal black holes. In addition to a black hole region in the future, such a solution of the Einstein field equations has a white hole region in its past. This region does not exist for black holes that have formed through gravitational collapse, however, nor are there any observed physical processes through which a white hole could be formed.

Supermassive black holes (SBHs) are theoretically predicted to be at the center of every galaxy and that possibly, a galaxy cannot form without one. Stephen Hawking and others have proposed that these SBHs spawn a supermassive white hole/Big Bang.

Discussed on

πŸ”— Doomscrolling

πŸ”— Internet

Doomscrolling or doomsurfing is the act of spending an excessive amount of screen time devoted to the absorption of negative news. Increased consumption of predominantly negative news may result in harmful psychophysiological responses in some.

Discussed on

πŸ”— An-225

πŸ”— Aviation πŸ”— Soviet Union πŸ”— Russia πŸ”— Russia/technology and engineering in Russia πŸ”— Aviation/aircraft πŸ”— Ukraine

The Antonov An-225 Mriya (Ukrainian: Антонов Ан-225 ΠœΡ€Ρ–Ρ, lit. 'dream' or 'inspiration'; NATO reporting name: Cossack) is a strategic airlift cargo aircraft that was designed by the Antonov Design Bureau in the Ukrainian SSR within the Soviet Union during the 1980s. Originally, this unique aircraft was developed as an enlargement of the Antonov An-124 to transport Buran-class orbiters. After successfully fulfilling its Soviet military missions, it was mothballed for eight years. It was then refurbished and reintroduced into commercial operation with Antonov Airlines, carrying oversized payloads. While a second airframe with a slightly different configuration was partially built, construction was halted more than once due to a lack of funding and interest. This second aircraft was last brought up to 60–70% completion in 2009.

As an over sized aircraft the Antonov An-225 Mriya holds multiple records which include; heaviest aircraft ever built, and largest wingspan of any aircraft in operational service. Other records held by the An-225 are cargo related in terms of weight and length as the Antonov An-225 has the capability to carry up to 640 tonnes (705 short tons). The An-225 attracts a high degree of public interest, so much that it has managed to attain a global following due to its size and its uniqueness. People frequently visit airports to see its scheduled arrivals and departures.

Discussed on

πŸ”— Fred Dibnah

πŸ”— Biography πŸ”— Greater Manchester

Frederick Travis Dibnah, (29Β April 1938 – 6Β November 2004) was an English steeplejack and television personality, with a keen interest in mechanical engineering, who described himself as a "backstreet mechanic".

When Dibnah was born, Britain relied heavily upon coal to fuel its industry. As a child, he was fascinated by the steam engines which powered the many textile mills in Bolton, but he paid particular attention to chimneys and the men who worked on them. He began his working life as a joiner, before becoming a steeplejack. From ageΒ 22, he served for two years in the Army Catering Corps of the British Army, undertaking his National Service. Once demobilised, he returned to steeplejacking but met with limited success until he was asked to repair Bolton's parish church. The resulting publicity provided a boost to his business, ensuring he was almost never out of work.

In 1978, while making repairs to Bolton Town Hall, Dibnah was filmed by a regional BBC news crew. The BBC then commissioned a documentary, which followed the rough-hewn steeplejack as he worked on chimneys, interacted with his family and talked about his favourite hobbyβ€”steam. His Lanky manner and gentle, self-taught philosophical outlook proved popular with viewers and he featured in a number of television programmes. Toward the end of his life, the decline of Britain's industry was mirrored by a decline in his steeplejacking business and Dibnah increasingly came to rely on public appearances and after-dinner speaking to support his income. In 1998, he presented a programme on Britain's industrial history and went on to present a number of series, largely concerned with the Industrial Revolution and its mechanical and architectural legacy.

He died from bladder cancer in November 2004, aged 66.

Discussed on

πŸ”— XKeyscore

πŸ”— United States/U.S. Government πŸ”— United States πŸ”— Mass surveillance πŸ”— Espionage πŸ”— Computing πŸ”— Australia πŸ”— New Zealand πŸ”— United Kingdom πŸ”— Computing/Computer Security πŸ”— Computing/Networking

XKeyscore (XKEYSCORE or XKS) is a secret computer system used by the United States National Security Agency (NSA) for searching and analyzing global Internet data, which it collects in real time. The NSA has shared XKeyscore with other intelligence agencies, including the Australian Signals Directorate, Canada's Communications Security Establishment, New Zealand's Government Communications Security Bureau, Britain's Government Communications Headquarters, Japan's Defense Intelligence Headquarters, and Germany's Bundesnachrichtendienst.

In July 2013, Edward Snowden publicly revealed the program's purpose and use by the NSA in The Sydney Morning Herald and O Globo newspapers. The code name was already public knowledge because it was mentioned in earlier articles, and, like many other code names, it appears in job postings and online rΓ©sumΓ©s of employees.

On July 3, 2014, German public broadcaster Norddeutscher Rundfunk, a member of ARD, published excerpts of XKeyscore's source code. A team of experts analyzed the source code.

πŸ”— UCI

πŸ”— Video games πŸ”— Chess

The Universal Chess Interface (UCI) is an open communication protocol that enables chess engines to communicate with user interfaces.

πŸ”— The Battle of Snake Island

πŸ”— Russia πŸ”— Military history πŸ”— Ukraine πŸ”— Russia/politics and law of Russia πŸ”— Military history/Russian, Soviet and CIS military history πŸ”— Russia/history of Russia πŸ”— Military history/European military history πŸ”— Military history/Post-Cold War

The Battle of Snake Island took place on 24 February 2022 on Snake Island (Ukrainian: ΠžΡΡ‚Ρ€Ρ–Π² Π—ΠΌΡ–Ρ—Π½ΠΈΠΉ, romanized:Β Ostriv Zmiinyi) during the 2022 Russian invasion of Ukraine.

Discussed on

πŸ”— Lithops

πŸ”— Plants

Lithops is a genus of succulent plants in the ice plant family, Aizoaceae. Members of the genus are native to southern Africa. The name is derived from the Ancient Greek words λίθος (lΓ­thos), meaning "stone," and α½„Οˆ (Γ³ps), meaning "face," referring to the stone-like appearance of the plants. They avoid being eaten by blending in with surrounding rocks and are often known as pebble plants or living stones. The formation of the name from the Ancient Greek "-ops" means that even a single plant is called a Lithops.

Discussed on

πŸ”— JosΓ© Mujica

πŸ”— Biography πŸ”— Military history πŸ”— Politics πŸ”— Military history/Military biography πŸ”— Biography/military biography πŸ”— Military history/Cold War πŸ”— Biography/politics and government πŸ”— Military history/South American military history πŸ”— Uruguay

José Alberto "Pepe" Mujica Cordano (Spanish: [xoˈse muˈxika]; born 20 May 1935) is a Uruguayan politician and farmer who served as the 40th President of Uruguay from 2010 to 2015. A former guerrilla with the Tupamaros, he was tortured and imprisoned for 14 years during the military dictatorship in the 1970s and 1980s. A member of the Broad Front coalition of left-wing parties, Mujica was Minister of Livestock, Agriculture, and Fisheries from 2005 to 2008 and a Senator afterwards. As the candidate of the Broad Front, he won the 2009 presidential election and took office as President on 1 March 2010.

He has been described as "the world's humblest head of state" due to his austere lifestyle and his donation of around 90 percent of his $12,000 monthly salary to charities that benefit poor people and small entrepreneurs. An outspoken critic of capitalism’s focus on stockpiling material possessions which do not contribute to human happiness, Pepe is often seen riding his 60-year-old bicycle. The Times Higher Education called him the "philosopher president" in 2015, a play on words of Plato's conception of the philosopher king.

Discussed on