Random Articles (Page 22)
Have a deep view into what people are curious about.
π Mummy Brown
Mummy brown, also known as Egyptian brown or Caput Mortuum,:β254β is a rich brown bituminous pigment with good transparency, sitting between burnt umber and raw umber in tint. The pigment was made from the flesh of mummies mixed with white pitch and myrrh. Mummy brown was extremely popular from the mid-eighteenth to the nineteenth centuries. However, fresh supplies of mummies diminished, and artists were less satisfied with the pigment's permanency and finish. By 1915, demand had significantly declined. Suppliers ceased to offer it by the middle of the twentieth century.:β82β
Mummy brown was one of the favourite colours of the Pre-Raphaelites. It was used by many artists, including Eugene Delacroix, William Beechey, Edward Burne-Jones, Lawrence Alma-Tadema, and Martin Drolling.
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- "Mummy Brown" | 2024-05-16 | 40 Upvotes 16 Comments
π Why I stopped taking photographs almost altogether
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- "Why I stopped taking photographs almost altogether" | 2023-08-16 | 51 Upvotes 62 Comments
π Blind Man's Bluff: The Untold Story of American Submarine Espionage
Blind Man's Bluff: The Untold Story of American Submarine Espionage (ISBNΒ 0-06-103004-X) by Sherry Sontag, Christopher Drew, and Annette Lawrence Drew, published in 1998 by PublicAffairs, is a non-fiction book about U.S. Navy submarine operations during the Cold War. Several operations are described in the book, such as the use of USSΒ Parche to tap Soviet undersea communications cables and USSΒ Halibut to do the same in Operation Ivy Bells.
The book also contains an extensive list of collisions between Western and Soviet submarines and U.S. submarine awards.
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- "Blind Man's Bluff: The Untold Story of American Submarine Espionage" | 2024-08-01 | 14 Upvotes 1 Comments
π LOOP (programming language)
LOOP is a programming language designed by Uwe SchΓΆning, along with GOTO and WHILE. The only operations supported in the language are assignment, addition and looping.
The key property of the LOOP language is that the functions it can compute are exactly the primitive recursive functions.
Discussed on
- "LOOP (programming language)" | 2018-12-25 | 36 Upvotes 7 Comments
π Xeer
Xeer (pronounced [Δ§eΛr]) is the traditional legal system of Somalia, and one of the three systems from which formal Somali law draws its inspiration, the others being civil law and Islamic law. It is believed to pre-date Islam, although it was influenced by Islam and retains many of the faith's conservative elements. Under this system, elders, known as the xeer begti serve as mediator judges and help settle court cases, taking precedent and custom into account. Xeer is polycentric in that different groups within Somali society have different interpretations of xeer.
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- "Xeer" | 2014-05-13 | 246 Upvotes 117 Comments
π The mysterious broadcast interruption of 1977
The Southern Television broadcast interruption was a broadcast signal intrusion that occurred on 26 November 1977 in parts of southern England in the United Kingdom. The audio of a Southern Television broadcast was replaced by a voice claiming to represent the 'Ashtar Galactic Command', delivering a message instructing humanity to abandon its weapons so it could participate in a 'future awakening' and 'achieve a higher state of evolution'. After six minutes, the broadcast returned to its scheduled programme.
Subsequent investigations showed that the Hannington transmitter of the Independent Broadcasting Authority had rebroadcast the signal from a small but nearby unauthorised transmitter, instead of the intended source at Rowridge transmitting station. The hoaxer was never identified.
The event prompted hundreds of telephone calls from concerned members of the public, and was widely reported in British and American newspapers. These are sometimes contradictory, including differing accounts of the name used by the speaker and the wording of their message.
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- "The mysterious broadcast interruption of 1977" | 2021-11-12 | 16 Upvotes 6 Comments
π Eleanor Cross
The Eleanor crosses were a series of twelve tall and lavishly decorated stone monuments topped with crosses erected in a line down part of the east of England. King Edward I had them built between 1291 and about 1295 in memory of his beloved wife Eleanor of Castile. The King and Queen had been married for 36 years and she stayed by the Kingβs side through his many travels. While on a royal progress, she died in the East Midlands in November 1290, perhaps due to fever. The crosses, erected in her memory, marked the nightly resting-places along the route taken when her body was transported to Westminster Abbey near London.
The crosses stood at Lincoln, Grantham and Stamford, all in Lincolnshire; Geddington and Hardingstone in Northamptonshire; Stony Stratford in Buckinghamshire; Woburn and Dunstable in Bedfordshire; St Albans and Waltham (now Waltham Cross) in Hertfordshire; Cheapside in London; and Charing (now Charing Cross) in Westminster.
Three of the medieval monuments β those at Geddington, Hardingstone and Waltham Cross β survive more or less intact; but the other nine, other than a few fragments, are lost. The largest and most ornate of the twelve was the Charing Cross. Several memorials and elaborated reproductions of the crosses have been erected, including the Queen Eleanor Memorial Cross at Charing Cross Station (built 1865).
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- "Eleanor Cross" | 2023-12-11 | 47 Upvotes 21 Comments
π Help break my "proof" of p = np... i can't find the error
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- "Help break my "proof" of p = np... i can't find the error" | 2011-12-23 | 12 Upvotes 1 Comments
π Tobler's First Law of Geography
The First Law of Geography, according to Waldo Tobler, is "everything is related to everything else, but near things are more related than distant things." This first law is the foundation of the fundamental concepts of spatial dependence and spatial autocorrelation and is utilized specifically for the inverse distance weighting method for spatial interpolation and to support the regionalized variable theory for kriging. It is a modern formulation of David Hume's principle of contiguity.
Tobler first presented his seminal idea during a meeting of the International Geographical Union's Commission on Qualitative Methods held in 1969 and later published by him in 1970. Though simple in its presentation, this idea is profound. Without it, "the full range of conditions anywhere on the Earth's surface could in principle be found packed within any small area. There would be no regions of approximately homogeneous conditions to be described by giving attributes to area objects. Topographic surfaces would vary chaotically, with slopes that were everywhere infinite, and the contours of such surfaces would be infinitely dense and contorted. Spatial analysis, and indeed life itself, would be impossible."
Less well known is his second law, which complements the first: "The phenomenon external to an area of interest affects what goes on inside".
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- "Tobler's First Law of Geography" | 2020-10-30 | 63 Upvotes 17 Comments
π Farmers' Suicide in the United States
Farmers' suicides in the United States refers to the instances of American farmers taking their own lives, largely since the 1980s, partly due to their falling into debt, but as a larger mental-health crisis among U.S. agriculture workers. In the Midwest alone, over 1,500 farmers have taken their own lives since the 1980s. It mirrors a crisis happening globally: in Australia, a farmer dies by suicide every four days; in the United Kingdom, one farmer a week takes their own life, in France it is one every two days. More than 270,000 farmers have died by suicide since 1995 in India.
Farmers are among the most likely to die by suicide, in comparison to other occupations, according to a study published in January 2020 by the Centers for Disease Control and Prevention (CDC). Researchers at the University of Iowa found that farmers, and others in the agricultural trade, had the highest suicide rate of all occupations from 1992 to 2010, the years covered in a 2017 study. The rate was 3.5 times that of the general population. This echoed a study conducted the previous year by the CDC and another undertaken by the National Rural Health Association (NRHA).
Most family farmers seem to agree on what led to their plight: government policy. In the years after the New Deal, they say, the United States set a price floor for farmers, essentially ensuring they received a minimum wage for the crops they produced. But the government began rolling back this policy in the 1970s, and now the global market largely determines the price they get for their crops. Big farms can make do with lower prices for crops by increasing their scale; a few cents per gallon of cow's milk adds up if you have thousands of cows.
βTime, November 27, 2019
As of April 2023, the suicide rate within the farming community exceeds that of the general population by three and a half times.
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- "Farmers' Suicide in the United States" | 2024-11-18 | 77 Upvotes 35 Comments