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🔗 Astronomy

In astronomy, the lithium problem or lithium discrepancy refers to the discrepancy between the primordial abundance of lithium as inferred from observations of metal-poor (Population II) halo stars in our galaxy and the amount that should theoretically exist due to Big Bang nucleosynthesis+WMAP cosmic baryon density predictions of the CMB. Namely, the most widely accepted models of the Big Bang suggest that three times as much primordial lithium, in particular lithium-7, should exist. This contrasts with the observed abundance of isotopes of hydrogen (¹H and ²H) and helium (³He and ⁴He) that are consistent with predictions. The discrepancy is highlighted in a so-called "Schramm plot", named in honor of astrophysicist David Schramm, which depicts these primordial abundances as a function of cosmic baryon content from standard BBN predictions.

🔗 Comedy

This Man, according to a website created in 2008 by Italian marketer Andrea Natella named Ever Dream This Man?, was a person who was claimed to have been repeatedly seen in dreams by the whole world since 2006, but was never found in the real world. Natella created the site in 2008, but it was not until October 2009 that it gained attention from the press and online internet users. This Man's notoriety spawned several internet memes that spoofed flyers of the website, references in films and television shows like The X-Files, and a manga series based on the hoax by Weekly Shonen Magazine.

🔗 Mathematics 🔗 Physics 🔗 Lists 🔗 Anthroponymy

Carl Friedrich Gauss (1777–1855) is the eponym of all of the topics listed below. There are over 100 topics all named after this German mathematician and scientist, all in the fields of mathematics, physics, and astronomy. The English eponymous adjective Gaussian is pronounced GOWSS-ee-ən.

🔗 Serbia 🔗 Yugoslavia 🔗 Military history 🔗 Military history/North American military history 🔗 Military history/United States military history 🔗 Military history/French military history 🔗 Military history/Balkan military history 🔗 Military history/European military history 🔗 Military history/Post-Cold War 🔗 Kosovo 🔗 NATO 🔗 Serbia/Belgrade

The North Atlantic Treaty Organisation (NATO) carried out an aerial bombing campaign against the Federal Republic of Yugoslavia during the Kosovo War. The air strikes lasted from 24 March 1999 to 10 June 1999. The bombings continued until an agreement was reached that led to the withdrawal of Yugoslav armed forces from Kosovo, and the establishment of the United Nations Interim Administration Mission in Kosovo, a UN peacekeeping mission in Kosovo. The official NATO operation code name was Operation Allied Force whereas the United States called it Operation Noble Anvil; in Yugoslavia the operation was incorrectly called Merciful Angel (Serbian: Милосрдни анђео / Milosrdni anđeo) as a result of a misunderstanding or mistranslation.

NATO's intervention was prompted by Yugoslavia's bloodshed and ethnic cleansing of Albanians, which drove the Albanians into neighbouring countries and had the potential to destabilize the region. Yugoslavia's actions had already provoked condemnation by international organisations and agencies such as the UN, NATO, and various INGOs. Yugoslavia's refusal to sign the Rambouillet Accords was initially offered as justification for NATO's use of force. NATO countries attempted to gain authorisation from the UN Security Council for military action, but were opposed by China and Russia, who indicated that they would veto such a measure. As a result, NATO launched its campaign without the UN's approval, stating that it was a humanitarian intervention. The UN Charter prohibits the use of force except in the case of a decision by the Security Council under Chapter VII, or self-defence against an armed attack – neither of which were present in this case.

By the end of the war, the Yugoslavs had killed 1,500 to 2,131 combatants, while choosing to heavily target Kosovar Albanian civilians, with 8,676 killed or missing and some 848,000 expelled from Kosovo. The NATO bombing killed about 1,000 members of the Yugoslav security forces in addition to between 489 and 528 civilians. It destroyed or damaged bridges, industrial plants, hospitals, schools, cultural monuments, private businesses as well as barracks and military installations. In the days after the Yugoslav army withdrew, over 164,000 Serbs and 24,000 Roma left Kosovo. Many of the remaining non-Albanian civilians (as well as Albanians perceived as collaborators) were victims of abuse which included beatings, abductions, and murders. After Kosovo and other Yugoslav Wars, Serbia became home to the highest number of refugees and IDPs (including Kosovo Serbs) in Europe.

The bombing was NATO's second major combat operation, following the 1995 bombing campaign in Bosnia and Herzegovina. It was the first time that NATO had used military force without the expressed endorsement of the UN Security Council, which triggered debates over the legitimacy of the intervention.

The basic principles of war propaganda (Principes élémentaires de propagande de guerre) is a monograph by Anne Morelli published in 2001. It has not been translated into English. The subtitle recommends its "usability in case of cold war, hot war and lukewarm war" (Utilisables en cas de guerre froide, chaude ou tiède).

The ten "commandments" of propaganda which Anne Morelli elaborates in this work are, above all, an analytical framework for pedagogical purposes and for media analysis. Morelli does not want to take sides or defend "dictators", but show the regularity of use of the ten principles in the media and in society:

"I will not put to test the purity of one or the other's intentions. I am not going to find out who is lying and who is telling the truth, who is believing what he says, and who does not. My only intention is to illustrate the principles of propaganda that are used and to describe their functioning." (P. 6)

Nonetheless, it seems undeniable to the author that after the wars that characterize our epoch (Kosovo, Second Gulf War, Afghanistan War, Iraq War), Western democracies and their media  must be discussed.

As Rudolph Walter in his review in Die Zeit shows, Morelli in this work adapts the typical forms of various contents of propaganda to news of her time. She takes up Arthur Ponsonby's Falsehood in War-Time and George Demartial's La mobilisation des consciences. La guerre de 1914 about propaganda in the First World War, systematizes them in the form of ten principles, and applies them to both world wars, the war in the Balkan, and the war in Afghanistan. Four of the following principles, according to Walter just emanate directly from the principle of friend or foe, "we and them" mindset and simplistic thinking in terms of black and white.

🔗 Ancient Egypt 🔗 Maps 🔗 Geology

The Turin Papyrus Map is an ancient Egyptian map, generally considered the oldest surviving map of topographical interest from the ancient world. It is drawn on a papyrus reportedly discovered at Deir el-Medina in Thebes, collected by Bernardino Drovetti (known as Napoleon's Proconsul) in Egypt sometime before 1824 AD and now preserved in Turin's Museo Egizio. The map was drawn about 1150 BC by the well-known Scribe-of-the-Tomb Amennakhte, son of Ipuy. It was prepared for Ramesses IV's quarrying expedition to the Wadi Hammamat in the Eastern Desert, which exposes Precambrian rocks of the Arabian-Nubian Shield. The purpose of the expedition was to obtain blocks of bekhen-stone (metagraywacke sandstone) to be used for statues of the king.

🔗 Biography 🔗 Ukraine

Boris Tymofiyovych Romantschenko (Ukrainian: Борис Тимофійович Романченко; 20 January 1926 – 18 March 2022) was a survivor of the German concentration camps Buchenwald, Peenemünde, Dora and Bergen-Belsen. He was killed during the 2022 Russian invasion of Ukraine.

🔗 Geography 🔗 Mountains

A gravity hill, also known as a magnetic hill, mystery hill, mystery spot, gravity road, or anti-gravity hill, is a place where the layout of the surrounding land produces an optical illusion, making a slight downhill slope appear to be an uphill slope. Thus, a car left out of gear will appear to be rolling uphill against gravity. There are hundreds of recognized gravity hills around the world.

The slope of gravity hills is an optical illusion, although sites are often accompanied by claims that magnetic or supernatural forces are at work. The most important factor contributing to the illusion is a completely or mostly obstructed horizon. Without a horizon, it becomes difficult to judge the slope of a surface as a reliable reference is missing. Objects which one would normally assume to be more or less perpendicular to the ground, such as trees, may actually be leaning, offsetting the visual reference.

A 2003 study looked into how the absence of a horizon can skew the perspective on gravity hills by recreating a number of antigravity places in the lab to see how volunteers would react. As a conclusion, researchers from Universities of Padova and Pavia in Italy found that without a true horizon in sight, landmarks such as trees and signs actually played these tricks on the human brain.

The illusion is similar to the Ames room, in which objects can also appear to roll against gravity.

The opposite phenomenon—an uphill road that appears flat—is known in bicycle racing as a "false flat".

🔗 Economics 🔗 Politics

The Nordic model comprises the economic and social policies as well as typical cultural practices common to the Nordic countries (Denmark, Finland, Iceland, Norway, and Sweden). This includes a comprehensive welfare state and multi-level collective bargaining based on the economic foundations of social corporatism, with a high percentage of the workforce unionized and a sizable percentage of the population employed by the public sector (roughly 30% of the work force in areas such as healthcare, education, and government). Although it was developed in the 1930s under the leadership of social democrats, the Nordic model began to gain attention after World War II.

The three Scandinavian countries are constitutional monarchies, while Finland and Iceland have been republics since the 20th century. As of 2021, the Nordic countries are described as being highly democratic and all have a unicameral form of governance and use proportional representation in their electoral systems. Although there are significant differences among the Nordic countries, they all have some common traits. These include support for a universalist welfare state aimed specifically at enhancing individual autonomy and promoting social mobility, a corporatist system involving a tripartite arrangement where representatives of labour and employers negotiate wages, labour market policy is mediated by the government, and a commitment to private ownership within a market-based mixed economy, with Norway being a partial exception due to a large number of state-owned enterprises and state ownership in publicly listed firms. As of 2020, all of the Nordic countries rank highly on the inequality-adjusted HDI and the Global Peace Index as well as being ranked in the top 10 on the World Happiness Report.

Over the last few decades, the traditional Nordic model has transformed in some ways, including increased deregulation and expanding privatization of public services. However, the Nordic model is still distinguished from other models by the strong emphasis on public services and social investment.

🔗 Film 🔗 Film/Filmmaking 🔗 Photography 🔗 Photography/History of photography

The Zone System is a photographic technique for determining optimal film exposure and development, formulated by Ansel Adams and Fred Archer. Adams described the Zone System as "[...] not an invention of mine; it is a codification of the principles of sensitometry, worked out by Fred Archer and myself at the Art Center School in Los Angeles, around 1939–40."

The technique is based on the late 19th century sensitometry studies of Hurter and Driffield. The Zone System provides photographers with a systematic method of precisely defining the relationship between the way they visualize the photographic subject and the final results. Although it originated with black-and-white sheet film, the Zone System is also applicable to roll film, both black-and-white and color, negative and reversal, and to digital photography.