July 16, 2024
Speed wobble (also known as shimmy, tank-slapper, or speed wobble) is a rapid side-to-side shaking of a vehicle’s front wheel(s) that occurs at high speeds and can lead to loss of control. It presents as a quick (4–10 Hz) oscillation of primarily the steerable wheel(s) of a vehicle. It is caused by a combination of factors, including initial disturbances and insufficient damping, which can create a resonance effect. Initially, the rest of the vehicle remains mostly unaffected, until translated into a vehicle yaw oscillation of increasing amplitude producing loss of control.
Vehicles that can experience this oscillation include motorcycles and bicycles, skateboards, and, in theory, any vehicle with a single steering pivot point and a sufficient amount of freedom of the steered wheel, including that which exists on some light aircraft with tricycle gear where instability can occur at speeds of less than 80 km/h (50 mph); this does not include most automobiles. The initial instability occurs mostly at high speed and is similar to that experienced by shopping cart wheels and aircraft landing gear. Continue reading →
Posted in Death, Science, Technology |
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June 28, 2024
A potato cannon is a pipe-based cannon that uses air pressure (pneumatic) or combustion of a flammable gas (aerosol, propane, etc.) to fire projectiles, usually potatoes. A simple design consists of a pipe sealed on one end, with a reducer on the other end to lower the diameter of the pipe, which has the corresponding lower-diameter pipe attached to it, called the barrel. Generally, the operator loads the projectile into the barrel, then utilizes a fuel or air pressure (or sometimes both) to propel the projectile out of the cannon.
The range of the cannon depends on many variables, including the type of fuel used, the efficiency of the fuel/air ratio, the combustion chamber/barrel ratio, and the flight characteristics of the projectile. Common distances vary from 100–200 meters (330–660 feet), and there is a reported case of a cannon exceeding 500 meters (1,600 feet) of range. The potato cannon can trace its origin to the World War II-era Holman Projector, which was a shipboard anti-aircraft weapon. Continue reading →
Posted in Humor, Technology, War |
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June 25, 2024
Quis custodiet ipsos custodes? is a Latin phrase found in the ‘Satires,’ a work of the 1st–2nd century Roman poet Juvenal. It may be translated as ‘Who will guard the guards themselves?’ or ‘Who will watch the watchmen?”.
The original context deals with the problem of ensuring marital fidelity, though the phrase is now commonly used more generally to refer to the problem of controlling the actions of persons in positions of power, an issue discussed by Plato in the ‘Republic.’ It is not clear whether the phrase was written by Juvenal, or whether the passage in which it appears was interpolated into his works. Continue reading →
Posted in Philosophy, Politics |
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June 13, 2024
Dark cuisine (‘hei an liao li’) is a Chinese neologism referring to a culinary style built around foods or food combinations that sound bizarre or even disgusting but which often are tastier than anticipated.
The Chinese term hei an liao li dates from its use in ‘Chuuka Ichiban!’ (‘China’s Number One!’), a 1990s manga series by Etsushi Ogawa, that follow a young chef in 19th-century China as he fights the Dark Cooking Society. In China the term had been used starting in 2012 to discuss stargazy pie, a Cornish baked sardine dish that exemplified ‘all that the Chinese find baffling about Western cooking.’ Continue reading →
Posted in Food, World |
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May 20, 2024
The Polish School of Posters refers to a highly influential artistic movement that emerged in Poland after World War II, primarily from the 1950s through the 1980s, characterized by its unique graphic design style, particularly in the realm of poster art.
Despite the restrictions of the communist regime, Polish poster artists enjoyed a surprising degree of creative liberty compared to other art forms. They often used surreal, abstract, and metaphorical illustrations to convey complex ideas and emotions, and many posters served as subtle critiques of the political and social realities of the time. Posters featured vivid colors, strong contrasts, and simplified forms to create eye-catching, impactful designs. Distinctive, expressive lettering was hand-drawn and integrated into the overall composition. Continue reading →
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May 14, 2024
A party line (multiparty line, shared service line, party wire) is a local loop telephone circuit that is shared by multiple telephone service subscribers. Party line systems were widely used to provide telephone service, starting with the first commercial switchboards in 1878.
Party lines provided no privacy in communication. They were frequently used as a source of entertainment and gossip, as well as a means of quickly alerting entire neighborhoods of emergencies such as fires, becoming a cultural fixture of rural areas for many decades. Objections about one party monopolizing a multi-party line were a staple of complaints to telephone companies and letters to advice columnists for years and eavesdropping on calls remained an ongoing concern. Continue reading →
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May 2, 2024
The B-theory of time, also called the ‘tenseless theory of time,’ is one of two positions regarding the temporal ordering of events in the philosophy of time. B-theorists argue that the flow of time is only a subjective illusion of human consciousness, that the past, present, and future are equally real, and that time is tenseless: temporal becoming is not an objective feature of reality. Therefore, there is nothing privileged about the present, ontologically speaking.
The B-theory is derived from a distinction drawn by English idealist metaphysician J. M. E. McTaggart between A series and B series. The B-theory is often drawn upon in theoretical physics, and is seen in theories such as eternalism (the view that all existence in time is equally real, as opposed to presentism or the growing block universe theory of time, in which at least the future is not the same as any other time). Continue reading →
Posted in Philosophy |
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April 20, 2024
Killing baby Hitler is a thought experiment in ethics and theoretical physics which poses the question of using time travel to assassinate an infant Adolf Hitler. It presents an ethical dilemma in both the action and its consequences, as well as a temporal paradox in the logical consistency of time. Killing baby Hitler first became a literary trope of science fiction during World War II and has since been used to explore these ethical and metaphysical debates.
Public debate around the question of killing baby Hitler reached its height in late 2015, after ‘The New York Times’ published a poll asking its readers the question. 42% said they would kill baby Hitler, 30% said they would not and 28% were undecided. Advocates of killing baby Hitler included Florida governor Jeb Bush and film actor Tom Hanks, while comedian Stephen Colbert and pundit Ben Shapiro were counted among the opponents of the policy. Continue reading →
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April 19, 2024
The Kia Challenge is a viral TikTok trend to which a series of motor vehicle thefts is attributed, targeting Kia and Hyundai vehicles in the U.S. manufactured between 2011 and 2021. The trend, which began in October 2022, has led to eight fatalities, according to the National Highway Traffic Safety Administration.
Until 2011, most Kia vehicles were manufactured with immobilizers—electronic security devices that prevent the engine from being started unless a proper key is inserted—a system present in most Hyundai vehicles until 2016. In Kia Sportage models manufactured in 2010, the immobilizer system comprised a transponder in the ignition key, an antenna coil in the key cylinder, and a SMARTRA unit. Kia vehicles manufactured from 2011 to 2021 and Hyundai vehicles manufactured from 2016 to 2021 that use a steel key, in comparison to a key fob and a push-button start mechanism, lack immobilizers. Continue reading →
Posted in Money, Politics, Technology |
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April 19, 2024
The Mexican filter is a yellow-colored or sepia filter that is sometimes employed in films and television productions to visually represent scenes set in Mexico, as well as other Latin American and South Asian countries. It has been criticized for tending to wash out the faces of people with darker skin, and for stereotyping the countries it depicts. Notable examples of Mexican filter use include: ‘Traffic’ (2000), ‘Breaking Bad’ (2008), ‘Extraction’ (2020), ‘Saw X’ (2023).
The use of yellow color filters for Mexico began around 2000, when technical advancements in film-making allowed the easier use of color filters. Traditionally used to convey a sense of heat and aridity, the use of yellow color filters for Mexico eventually became a trope. It has been disputed that temperature is a good justification for using the Mexican filter given that hot cities in the United States are rarely if ever depicted with yellow filters.
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April 11, 2024
”No Way to Prevent This,’ Says Only Nation Where This Regularly Happens’ is the title of a series of articles perennially published by the American news satire organization ‘The Onion’ satirizing the frequency of mass shootings in the United States and the lack of action taken in the wake of such incidents.
Each article is about 200 words long, detailing the location of the shooting and the number of victims, but otherwise remaining essentially the same. A fictitious resident—usually of a state in which the shooting did not take place—is quoted as saying that the shooting was ‘a terrible tragedy,’ but ‘there’s nothing anyone can do to stop them.’ The article ends by saying that the United States is the ‘only economically advanced nation in the world where roughly two mass shootings have occurred every month for the past eight years,’ and that Americans view themselves and the situation as ‘helpless.’ Continue reading →
Posted in Humor, Language, Politics |
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April 4, 2024
The Hum is a name often given to widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise audible to many but not all people. Hums have been reported all over the world. They are sometimes named according to the locality where the problem has been particularly publicized, such as the ‘Taos Hum’ in New Mexico and the ‘Windsor Hum’ in Ontario.
The Hum does not appear to be a single phenomenon. Different causes have been attributed, including local mechanical sources, often from industrial plants, as well as manifestations of tinnitus or other biological auditory effects. Continue reading →
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