Random Articles (Page 300)
Have a deep view into what people are curious about.
π Cadillac Ranch
Cadillac Ranch is a public art installation and sculpture in Amarillo, Texas, US. It was created in 1974 by Chip Lord, Hudson Marquez and Doug Michels, who were a part of the art group Ant Farm.
The installation consists of ten Cadillacs (1949β1963) buried nose-first in the ground. Installed in 1974, the cars were either older running, used or junk cars β together spanning the successive generations of the car line β and the defining evolution of their tailfins. The cars are inclined at the same angle as the pyramids at Giza.
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- "Cadillac Ranch" | 2023-03-24 | 56 Upvotes 34 Comments
π Old English Wikipedia (or at least I think it is)
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- "Old English Wikipedia (or at least I think it is)" | 2019-08-08 | 23 Upvotes 9 Comments
π Black Start
A black start is the process of restoring an electric power station or a part of an electric grid to operation without relying on the external electric power transmission network to recover from a total or partial shutdown.
Normally, the electric power used within the plant is provided from the station's own generators. If all of the plant's main generators are shut down, station service power is provided by drawing power from the grid through the plant's transmission line. However, during a wide-area outage, off-site power from the grid is not available. In the absence of grid power, a so-called black start needs to be performed to bootstrap the power grid into operation.
To provide a black start, some power stations have small diesel generators, normally called the black start diesel generator (BSDG), which can be used to start larger generators (of several megawatts capacity), which in turn can be used to start the main power station generators. Generating plants using steam turbines require station service power of up to 10% of their capacity for boiler feedwater pumps, boiler forced-draft combustion air blowers, and for fuel preparation. It is uneconomical to provide such a large standby capacity at each station, so black-start power must be provided over designated tie lines from another station. Often hydroelectric power plants are designated as the black-start sources to restore network interconnections. A hydroelectric station needs very little initial power for starting purposes (just enough to open the intake gates and provide excitation current to the generator field coils), and can put a large block of power on line very quickly to allow start-up of fossil-fuel or nuclear stations. Certain types of combustion turbine can be configured for black start, providing another option in places without suitable hydroelectric plants. In 2017, a utility in Southern California successfully demonstrated the use of a battery-based energy-storage system to provide a black start, firing up a combined-cycle gas turbine from an idle state.
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- "Black Start" | 2013-04-29 | 289 Upvotes 105 Comments
π Andreev Bay nuclear accident of 1982
The Andreev Bay nuclear accident took place at Soviet naval base 569 in February 1982. Andreev Bay is a radioactive waste repository, located 55Β km (34 mi) northwest of Murmansk and 60Β km (37 mi) from the Norwegian border on the western shore of the Zapadnaya Litsa (Kola Peninsula). The repository entered service in 1961. In February 1982, a nuclear accident occurred in which radioactive water was released from a pool in building #5. Cleanup of the accident took place from 1983 to 1989. About 700,000 tonnes (770,000 tons) of highly radioactive water leaked into the Barents Sea during that time period. About 1,000 people took part in the cleanup effort. Vladimir Konstantinovich Bulygin, who was in charge of the naval fleet's radiation accidents, received the Hero of the Soviet Union distinction for his work.
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- "Andreev Bay nuclear accident of 1982" | 2017-10-08 | 58 Upvotes 16 Comments
π The knowledge argument
The knowledge argument (also known as Mary's room or Mary the super-scientist) is a philosophical thought experiment proposed by Frank Jackson in his article "Epiphenomenal Qualia" (1982) and extended in "What Mary Didn't Know" (1986). The experiment is intended to argue against physicalismβthe view that the universe, including all that is mental, is entirely physical. The debate that emerged following its publication became the subject of an edited volumeβThere's Something About Mary (2004)βwhich includes replies from such philosophers as Daniel Dennett, David Lewis, and Paul Churchland.
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- "The knowledge argument" | 2015-03-19 | 31 Upvotes 54 Comments
π Paul Le Roux
Paul Calder Le Roux (born 24 December 1972) is a former programmer, former criminal cartel boss and informant to the US Drug Enforcement Administration (DEA).
In 1999, he created E4M, a free and open-source disk encryption software program for Microsoft Windows, and is sometimes credited for open-source TrueCrypt, which is based on E4M's code, though he denies involvement with TrueCrypt.
He was arrested on 26 September 2012 for conspiracy to import narcotics into the United States, and agreed to cooperate with authorities in exchange for a lesser sentence and immunity to any crimes he might admit to afterwards. He subsequently admitted to arranging or participating in seven murders, carried out as part of an extensive illegal business empire.
Le Roux was sentenced to 25 years in prison in June 2020.
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- "Paul Le Roux" | 2022-12-13 | 13 Upvotes 2 Comments
- "Paul Le Roux" | 2020-11-22 | 21 Upvotes 2 Comments
π Silphium: Did Greek science die out because their elite discovered The Pill?
Silphium (also known as silphion, laserwort, or laser) was a plant that was used in classical antiquity as a seasoning, perfume, as an aphrodisiac, or as a medicine. It also was used as a contraceptive by ancient Greeks and Romans. It was the essential item of trade from the ancient North African city of Cyrene, and was so critical to the Cyrenian economy that most of their coins bore a picture of the plant. The valuable product was the plant's resin (laser, laserpicium, or lasarpicium).
Silphium was an important species in prehistory, as evidenced by the Egyptians and Knossos Minoans developing a specific glyph to represent the silphium plant. It was used widely by most ancient Mediterranean cultures; the Romans who mentioned the plant in poems or songs, considered it "worth its weight in denarii" (silver coins), or even gold. Legend said that it was a gift from the god Apollo.
The exact identity of silphium is unclear. It is commonly believed to be a now-extinct plant of the genus Ferula, perhaps a variety of "giant fennel". The still-extant plants Margotia gummifera and Ferula tingitana have been suggested as other possibilities. Another plant, asafoetida, was used as a cheaper substitute for silphium, and had similar enough qualities that Romans, including the geographer Strabo, used the same word to describe both.
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- "Silphium" | 2021-04-08 | 158 Upvotes 46 Comments
- "Silphium: Did Greek science die out because their elite discovered The Pill?" | 2007-08-15 | 10 Upvotes 1 Comments
π Georgia Guidestones
The Georgia Guidestones are a granite monument erected in 1980 in Elbert County, Georgia, in the United States. A set of 10 guidelines is inscribed on the structure in eight modern languages and a shorter message is inscribed at the top of the structure in four ancient language scripts.
The monument stands at an approximate elevation of 750 feet (230Β m) above sea level, about 90 miles (140Β km) east of Atlanta, 45 miles (72Β km) from Athens, Georgia and 9 miles (14Β km) north of the center of the city of Elberton.
One slab stands in the center, with four arranged around it. A capstone lies on top of the five slabs, which are astronomically aligned. An additional stone tablet, which is set in the ground a short distance to the west of the structure, provides some notes on the history and purpose of the guidestones. The structure is sometimes referred to as an "American Stonehenge". The monument is 19Β feet 3Β inches (5.87Β m) tall, made from six granite slabs weighing 237,746 pounds (107,840Β kg) in all. The anonymity of the guidestones' authors and their apparent advocacy of population control, eugenics, and internationalism have made them a target for controversy and conspiracy theory.
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- "Georgia Guidestones" | 2019-10-10 | 42 Upvotes 16 Comments
π James Lovelock Has Died
James Ephraim Lovelock (26 July 1919 β 26 July 2022) was a British independent scientist, environmentalist and futurist. He was best known for proposing the Gaia hypothesis, which postulates that the Earth functions as a self-regulating system.
With a PhD in medicine, Lovelock began his career performing cryopreservation experiments on rodents, including successfully thawing frozen specimens. His methods were influential in the theories of cryonics (the cryopreservation of humans). He invented the electron capture detector, and using it, became the first to detect the widespread presence of chlorofluorocarbons in the atmosphere. While designing scientific instruments for NASA, he developed the Gaia hypothesis.
In the 2000s, he proposed a method of climate engineering to restore carbon dioxideβconsuming algae. He was an outspoken member of Environmentalists for Nuclear, asserting that fossil fuel interests have been behind opposition to nuclear energy, citing the effects of carbon dioxide as being harmful to the environment, and warning of global warming due to the greenhouse effect. He authored several environmental science books based upon the Gaia hypothesis from the late 1970s.
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- "James Lovelock Has Died" | 2022-07-27 | 100 Upvotes 19 Comments
π Curb Cut Effect
The curb cut effect is the phenomenon of disability-friendly features being used and appreciated by a larger group than the people they were designed for. For example, many hearing people use closed captioning. The phenomenon is named for curb cutsΒ β miniature ramps comprising parts of sidewalkΒ β which were first made for wheelchair access in particular places, but are now universal and no longer widely recognized as a disability-accessibility feature.
The curb cut effect is a subset of universal design, which is the purposeful design of an environment so that it is accessible to all people regardless of ability or disability. The curb cut effect differs slightly from universal design as the curb cut phenomenon is often unintentional rather than purposeful, but results in a similar outcome.
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- "Curb Cut Effect" | 2024-02-23 | 55 Upvotes 1 Comments