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π Isambard Kingdom Brunel
Isambard Kingdom Brunel (; 9 April 1806Β β 15 September 1859) was a British civil engineer who is considered "one of the most ingenious and prolific figures in engineering history", "one of the 19th-century engineering giants", and "one of the greatest figures of the Industrial Revolution, [who] changed the face of the English landscape with his groundbreaking designs and ingenious constructions". Brunel built dockyards, the Great Western Railway (GWR), a series of steamships including the first propeller-driven transatlantic steamship, and numerous important bridges and tunnels. His designs revolutionised public transport and modern engineering.
Though Brunel's projects were not always successful, they often contained innovative solutions to long-standing engineering problems. During his career, Brunel achieved many engineering firsts, including assisting in the building of the first tunnel under a navigable river and the development of SSΒ Great Britain, the first propeller-driven, ocean-going, iron ship, which, when launched in 1843, was the largest ship ever built.
On the GWR, Brunel set standards for a well-built railway, using careful surveys to minimise gradients and curves. This necessitated expensive construction techniques, new bridges, new viaducts, and the two-mile (3.2Β km) long Box Tunnel. One controversial feature was the wide gauge, a "broad gauge" of 7Β ftΒ 1β4Β in (2,140Β mm), instead of what was later to be known as "standard gauge" of 4Β ftΒ 8Β 1β2Β in (1,435Β mm). He astonished Britain by proposing to extend the GWR westward to North America by building steam-powered, iron-hulled ships. He designed and built three ships that revolutionised naval engineering: the SSΒ Great Western (1838), the SSΒ Great Britain (1843), and the SSΒ Great Eastern (1859).
In 2002, Brunel was placed second in a BBC public poll to determine the "100 Greatest Britons". In 2006, the bicentenary of his birth, a major programme of events celebrated his life and work under the name Brunel 200.
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- "Isambard Kingdom Brunel" | 2023-10-10 | 165 Upvotes 120 Comments
- "Isambard Kingdom Brunel" | 2015-11-16 | 52 Upvotes 17 Comments
- "Isambard Kingdom Brunel" | 2014-05-13 | 103 Upvotes 25 Comments
π Asterism (Typography)
In typography, an asterism, β, is a typographic symbol consisting of three asterisks placed in a triangle, which is used for a variety of purposes. The name originates from the astronomical term for a group of stars.
The asterism was originally used as a type of dinkus in typography, though increasingly rarely. It can also be used to mean "untitled" or author or title withheldΒ β as seen, for example, in some editions of Album for the Young by composer Robert Schumann (β 21, 26, and 30). In meteorology, an asterism in a station model indicates moderate snowfall.
π Zone Rouge
The Zone Rouge (English: Red Zone) is a chain of non-contiguous areas throughout northeastern France that the French government isolated after the First World War. The land, which originally covered more than 1,200 square kilometres (460Β sqΒ mi), was deemed too physically and environmentally damaged by conflict for human habitation. Rather than attempt to immediately clean up the former battlefields, the land was allowed to return to nature. Restrictions within the Zone Rouge still exist today, although the control areas have been greatly reduced.
The Zone Rouge was defined just after the war as "Completely devastated. Damage to properties: 100%. Damage to Agriculture: 100%. Impossible to clean. Human life impossible".
Under French law, activities such as housing, farming, or forestry were temporarily or permanently forbidden in the Zone Rouge, because of the vast amounts of human and animal remains, and millions of items of unexploded ordnance contaminating the land. Some towns and villages were never permitted to be rebuilt after the war.
π I Have No Mouth, and I Must Scream (1967)
"I Have No Mouth, and I Must Scream" is a post-apocalyptic science fiction short story by American writer Harlan Ellison. It was first published in the March 1967 issue of IF: Worlds of Science Fiction.
It won a Hugo Award in 1968. The name was also used for a short story collection of Ellison's work, featuring this story. It was reprinted by the Library of America, collected in volume two (Terror and the Uncanny, from the 1940s to Now) of American Fantastic Tales.
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- "I Have No Mouth, and I Must Scream (1967)" | 2023-10-12 | 46 Upvotes 6 Comments
π 4.2 Kiloyear Event
The 4.2-kiloyear BP aridification event was one of the most severe climatic events of the Holocene epoch. It defines the beginning of the current Meghalayan age in the Holocene epoch. Starting in about 2200Β BC, it probably lasted the entire 22nd century BC. It has been hypothesised to have caused the collapse of the Old Kingdom in Egypt as well as the Akkadian Empire in Mesopotamia, and the Liangzhu culture in the lower Yangtze River area. The drought may also have initiated the collapse of the Indus Valley Civilisation, with some of its population moving southeastward to follow the movement of their desired habitat, as well as the migration of Indo-European-speaking people into India.
Some scientists disagree with this conclusion and point out that the event was neither a global drought nor did it happen in a clear timeline.
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- "4.2 Kiloyear Event" | 2019-12-16 | 136 Upvotes 97 Comments
π Donna Strickland won her Nobel prize in Physics before she got a wikipedia page
Donna Theo Strickland, (born 27 May 1959) is a Canadian optical physicist and pioneer in the field of pulsed lasers. She was awarded the Nobel Prize in Physics in 2018, together with GΓ©rard Mourou, for the invention of chirped pulse amplification. She is a professor at the University of Waterloo.
She served as fellow, vice president, and president of The Optical Society, and is currently chair of their Presidential Advisory Committee. In 2018, she was listed as one of BBC's 100 Women.
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- "Donna Strickland won her Nobel prize in Physics before she got a wikipedia page" | 2018-10-02 | 41 Upvotes 24 Comments
π R vs. Adams
R v Adams [1996] EWCA Crim 10 and 222, are rulings in the United Kingdom that banned the expression in court of headline (soundbite), standalone Bayesian statistics from the reasoning admissible before a jury in DNA evidence cases, in favour of the calculated average (and maximal) number of matching incidences among the nation's population. The facts involved strong but inconclusive evidence conflicting with the DNA evidence, leading to a retrial.
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- "R vs. Adams" | 2022-08-22 | 13 Upvotes 6 Comments
π ReFS
Resilient File System (ReFS), codenamed "Protogon", is a Microsoft proprietary file system introduced with Windows Server 2012 with the intent of becoming the "next generation" file system after NTFS.
ReFS was designed to overcome problems that had become significant over the years since NTFS was conceived, which are related to how data storage requirements had changed. The key design advantages of ReFS include automatic integrity checking and data scrubbing, removal of the need for running chkdsk, protection against data degradation, built-in handling of hard disk drive failure and redundancy, integration of RAID functionality, a switch to copy/allocate on write for data and metadata updates, handling of very long paths and filenames, and storage virtualization and pooling, including almost arbitrarily sized logical volumes (unrelated to the physical sizes of the used drives).
These requirements arose from two major changes in storage systems and usageΒ β the size of storage in use (large or massive arrays of multi-terabyte drives now being fairly common), and the need for continual reliability. As a result, the file system needs to be self-repairing (to prevent disk checking from being impractically slow or disruptive), along with abstraction or virtualization between physical disks and logical volumes.
ReFS was initially added to Windows Server 2012 only, with the aim of gradual migration to consumer systems in future versions; this was achieved as of Windows 8.1. The initial versions removed some NTFS features, such as disk quotas, alternate data streams, and extended attributes. Some of these were re-implemented in later versions of ReFS.
In early versions (2012β2013), ReFS was similar to or slightly faster than NTFS in most tests, but far slower when full integrity checking was enabled, a result attributed to the relative newness of ReFS. Pre-release concerns were also voiced by one blogger over Storage Spaces, the storage system designed to underpin ReFS, which reportedly could fail in a manner that prevented ReFS from recovering automatically.
The ability to create ReFS volumes was removed in Windows 10's 2017 Fall Creators Update for all editions except Enterprise and Pro for Workstations.
The cluster size of a ReFS volume is either 4 KiB or 64 KiB.
π Kasparov versus the World
Kasparov versus the World was a game of chess played in 1999 over the Internet. Conducting the white pieces, Garry Kasparov faced the rest of the world in consultation, with the World Team moves to be decided by plurality vote. Over 50,000 people from more than 75 countries participated in the game.
The host and promoter of the match was the MSN Gaming Zone, with sponsorship from First USA bank. After 62 moves played over four months, Kasparov won the game. Contrary to expectations, the game produced a mixture of deep tactical and strategic ideas, and although Kasparov won, he admitted that he had never expended as much effort on any other game in his life. He later said, "It is the greatest game in the history of chess. The sheer number of ideas, the complexity, and the contribution it has made to chess make it the most important game ever played."
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- "Kasparov versus the World" | 2018-04-28 | 256 Upvotes 60 Comments
- "In 1999, Kasparov played chess against 50000 people." | 2008-12-10 | 33 Upvotes 25 Comments
π SkySails
SkySails GmbH & Co. KG is a Hamburg-based company that sells kite rigs to propel cargo ships, large yachts and fishing vessels by wind energy. Ships are pulled by an automatically-controlled foil kite of some hundreds of square meters. For multiple reasons, they give many times the thrust per unit area of conventional mast-mounted sails.
The systems save fuel, and reduce carbon emissions and shipping costs, but have not been widely adopted.
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- "SkySails" | 2019-07-04 | 126 Upvotes 42 Comments