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🔗 Computing 🔗 Computing/Early computers

Mailüfterl is a nickname for the Austrian Binär dezimaler Volltransistor-Rechenautomat (binary-decimal fully transistorized computing automaton), an early transistorized computer. Other early transistorized computers included TRADIC, Harwell CADET and TX-0.

Mailüfterl was built from May 1956 to May 1958 at the Vienna University of Technology by Heinz Zemanek.

Heinz Zemanek had come to an agreement with Konrad Zuse, whose company Zuse KG would finance the work of Rudolf Bodo, who helped build the Mailüfterl, also that all circuit diagrams of the Z22 were supplied to Bodo and Zemanek, and that after the Mailüfterl project Bodo should work for the Zuse KG to help build the transistorized Z23.

The first program, computation of the prime 5,073,548,261, was executed in May 1958. Completion of the software continued until 1961. The nickname was coined by Zemanek: "Even if it cannot match the rapid calculation speed of American models called 'Whirlwind' or 'Typhoon', it will be enough for a 'Wiener Mailüfterl'" (Viennese May breeze).

The computer has 3,000 transistors, 5,000 diodes, 1,000 assembly platelets, 100,000 solder joints, 15,000 resistors, 5,000 capacitors and about 20,000 metres (66,000 ft) of wire. It is 4 meters (13 ft) wide, 2.5 meters (8.2 ft) high, and 50 centimeters (20 in) deep. The machine was comparable in calculating power to what were then considered small vacuum-tube computers. Calculations and representation of values worked using the BCD system.

Zemanek later said about his project that it was a "semi-illegal" undertaking of an assistant professor, which he and a group of students realized without official authorization, and hence without financial support, from the university. In 1954 he traveled to Philips in the Netherlands, where he asked for a donation in kind. Transistors, invented seven years before and just beginning to be available commercially, were very difficult to obtain in quantity at any price, but Zemanek received a commitment for 1,000 rather slow hearing-aid transistors, and Philips finally shipped a total of 4,000 high-quality transistors to the Austrians.

🔗 Military history 🔗 Military history/North American military history 🔗 Military history/United States military history 🔗 Military history/Military science, technology, and theory 🔗 Military history/Weaponry 🔗 Physics 🔗 Chemistry

FOGBANK is a code name given to a material used in nuclear weapons such as the W76, W78 and W80.

FOGBANK's precise nature is classified; in the words of former Oak Ridge general manager Dennis Ruddy, "The material is classified. Its composition is classified. Its use in the weapon is classified, and the process itself is classified." Department of Energy Nuclear Explosive Safety documents simply describe it as a material "used in nuclear weapons and nuclear explosives" along with lithium hydride (LiH) and lithium deuteride (LiD), beryllium (Be), uranium hydride (UH₃), and plutonium hydride.

However National Nuclear Security Administration (NNSA) Administrator Tom D'Agostino disclosed the role of FOGBANK in the weapon: "There's another material in the—it's called interstage material, also known as fog bank", and arms experts believe that FOGBANK is an aerogel material which acts as an interstage material in a nuclear warhead; i.e., a material designed to become a superheated plasma following the detonation of the weapon's fission stage, the plasma then triggering the fusion-stage detonation.

🔗 Environment 🔗 Occupational Safety and Health 🔗 Brazil 🔗 Brazil/History of Brazil 🔗 Science Policy

The Goiânia accident [ɡojˈjɐniɐ] was a radioactive contamination accident that occurred on September 13, 1987, in Goiânia, in the Brazilian state of Goiás, after a forgotten radiotherapy source was taken from an abandoned hospital site in the city. It was subsequently handled by many people, resulting in four deaths. About 112,000 people were examined for radioactive contamination and 249 of them were found to have been contaminated.

In the cleanup operation, topsoil had to be removed from several sites, and several hundred houses were demolished. All the objects from within those houses, including personal possessions, were seized and incinerated. Time magazine has identified the accident as one of the world's "worst nuclear disasters" and the International Atomic Energy Agency called it "one of the world's worst radiological incidents".

🔗 History 🔗 Germany 🔗 Greece 🔗 Austria 🔗 Netherlands 🔗 Christianity 🔗 European history 🔗 Greece/Byzantine world 🔗 Christianity/Catholicism 🔗 Former countries 🔗 Czech Republic 🔗 Frisia 🔗 Former countries/Holy Roman Empire 🔗 Silesia 🔗 Christianity/Lutheranism 🔗 Christianity/Reformed Christianity

The Holy Roman Empire was dissolved on 6 August 1806, when the last Holy Roman Emperor, Francis II of the House of Habsburg-Lorraine, abdicated his title and released all Imperial states and officials from their oaths and obligations to the empire. Since the Middle Ages, the Holy Roman Empire had been recognized by Western Europeans as the legitimate continuation of the ancient Roman Empire due to its emperors having been proclaimed as Roman emperors by the papacy. Through this Roman legacy, the Holy Roman Emperors claimed to be universal monarchs whose jurisdiction extended beyond their empire's formal borders to all of Christian Europe and beyond. The decline of the Holy Roman Empire was a long and drawn-out process lasting centuries. The formation of the first modern sovereign territorial states in the 16th and 17th centuries, which brought with it the idea that jurisdiction corresponded to actual territory governed, threatened the ostensibly universal nature of the Holy Roman Empire.

The Holy Roman Empire by the time of the 18th century was widely regarded by contemporaries, both inside and outside the empire, as a highly "irregular" monarchy and "sick," having an "unusual" form of government. The empire lacked both a central standing army and a central treasury and its monarchs, formally elective rather than hereditary, could not exercise effective central control. Even then, most contemporaries believed that the empire could be revived and modernized. For example, the Reichstag passed the Imperial Recess as late as 1803.

The Holy Roman Empire finally began its true terminal decline during and after its involvement in the French Revolutionary Wars and the Napoleonic Wars. Although the empire defended itself quite well initially, war with France and Napoleon proved catastrophic. In 1804, Napoleon proclaimed himself as the Emperor of the French, which Francis II responded to by proclaiming himself the Emperor of Austria, in addition to already being the Holy Roman Emperor, an attempt at maintaining parity between France and Austria while also illustrating that the Holy Roman title outranked them both. Austria's defeat at the Battle of Austerlitz in December 1805 and the secession of a large number of Francis II's German vassals in July 1806 to form the Confederation of the Rhine, a French satellite state, effectively meant the end of the Holy Roman Empire. The abdication in August 1806, combined with a dissolution of the entire Imperial hierarchy and its institutions, was seen as necessary to prevent the possibility of Napoleon proclaiming himself Holy Roman Emperor, something which would have reduced Francis II to Napoleon's vassal.

Reactions to the empire's dissolution ranged from indifference to despair. The populace of Vienna, capital of the Habsburg monarchy, were horrified at the loss of the empire. Many of Francis II's former subjects questioned the legality of his actions; though his abdication was agreed to be perfectly legal, the dissolution of the empire and the release of all its vassals were seen as beyond the emperor's authority. As such, many of the empire's princes and subjects refused to accept that the empire was gone, with some commoners going so far as to believe that news of its dissolution was a plot by their local authorities. In Germany, the dissolution was widely compared to the ancient and legendary Fall of Troy and some associated the end of the Holy Roman Empire with the end times and the apocalypse.

🔗 China 🔗 Insects

Keeping crickets as pets emerged in China in early antiquity. Initially, crickets were kept for their "songs" (stridulation). In the early 12th century, the Chinese people began holding cricket fights. Throughout the Imperial era the Chinese also kept pet cicadas and grasshoppers, but crickets were the favorites in the Forbidden City and with the commoners alike. The art of selecting and breeding the finest fighting crickets was perfected during the Qing dynasty and remained a monopoly of the imperial court until the beginning of the 19th century.

The Imperial patronage promoted the art of making elaborate cricket containers and individual cricket homes. Traditional Chinese cricket homes come in three distinct shapes: wooden cages, ceramic jars, and gourds. Cages are used primarily for trapping and transportation. Gourds and ceramic jars are used as permanent cricket homes in winter and summer, respectively. They are treated with special mortar to enhance the apparent loudness and tone of a cricket's song. The imperial gardeners grew custom-shaped molded gourds tailored to each species of cricket. Their trade secrets were lost during the Chinese Civil War and the Cultural Revolution, but crickets remain a favorite pet of the Chinese to the present day. The Japanese pet cricket culture, which emerged at least a thousand years ago, has practically vanished during the 20th century.

Chinese cricket culture and cricket-related business is highly seasonal. Trapping crickets in the fields peaks in August and extends into September. The crickets soon end up at the markets of Shanghai and other major cities. Cricket fighting season extends until the end of autumn, overlapping with the Mid-Autumn Festival and the National Day. Chinese breeders are striving to make cricket fighting a year-round pastime, but the seasonal tradition prevails.

Modern Western sources recommend keeping pet crickets in transparent jars or small terrariums providing at least two inches of soil for burrowing and containing egg-crate shells or similar objects for shelter. A cricket's life span is short: Development from an egg to imago takes from one to two months. The imago then lives for around one month. Cricket hobbyists have to frequently replace aging insects with younger ones which are either specifically bred for cricket fighting or caught in the wild. This makes crickets less appealing as pets in Western countries. The speed of growth, coupled with the ease of breeding and raising nymphs, makes industrial-grown crickets a preferred and inexpensive food source for pet birds, reptiles, and spiders.

🔗 Africa 🔗 Spain 🔗 Africa/Western Sahara 🔗 Morocco 🔗 Limited recognition

Western Sahara is a United Nations–designated non-self-governing territory in north-western Africa. It has a surface area of 272,000 square kilometres (105,000 sq mi). Western Sahara is the last African colonial state yet to achieve independence and has been dubbed "Africa's last colony". With an estimated 600,000 inhabitants, it is the most sparsely populated territory in Africa and the second most sparsely populated territory in the world after Greenland, consisting mainly of desert flatlands.

Francoist Spain previously colonized the territory as the Spanish Sahara until 1975–1976. Spain attempted to transfer its administration to Morocco and Mauritania despite an advisory opinion of the International Court of Justice that those countries had no sovereignty over Western Sahara; a war erupted and the pro-independence Polisario Front proclaimed the Sahrawi Arab Democratic Republic (SADR). Mauritania withdrew its claims in 1979, and Morocco secured de facto control of most of the territory, including all major cities and most natural resources. The SADR established a government-in-exile in Tindouf, Algeria. A UN-sponsored ceasefire agreement was reached in 1991, though a planned referendum monitored by the UN's MINURSO mission has since stalled.

Approximately 30% of the Western Sahara is controlled by the Polisario Front and the remaining 70% is occupied by Morocco. Morocco maintains the Berm, a 2,700 km-long (1,700 mi) wall lined with land mines that splits the territory. The Polisario Front is recognized by the UN as the legitimate representative of the people of Western Sahara and is primarily supported by Algeria. The SADR has received partial international recognition and membership in the African Union. Morocco is supported by France and the United States; several states and the United Nations Security Council began expressing support for its autonomy proposal in the 2020s.

🔗 Books 🔗 Amphibians and Reptiles 🔗 Psychoactive and Recreational Drugs 🔗 Altered States of Consciousness

Bufo Alvarius: the Psychedelic Toad of the Sonoran Desert is an underground pamphlet written by Albert Most (real name Ken Nelson (1954–2019)), illustrated by Gail Patterson, and published by Venom Press in 1984. It described how to extract the venom of the Sonoran Desert toad (formerly Bufo alvarius, now Incilius alvarius), which contains the serotonergic psychedelic 5-MeO-DMT, and administer the venom to produce hallucinogenic effects. The pamphlet was responsible for the start of the recreational use of the toad venom and of 5-MeO-DMT. Subsequently, Andrew Weil and Wade Davis, in part citing the pamphlet, described the psychoactive effects of the toad in the scientific literature in 1992. In addition, they described the finding as the first instance of a psychedelic from an animal source to be discovered. Following the publication of the pamphlet, recreational use of the toads was encountered by the late 1980s and became a media sensation.

The pamphlet was originally published pseudonymously. Journalist Hamilton Morris described becoming obsessed with identifying the author of the pamphlet. Morris came upon a man named Alfred Savinelli, who claimed to be the author, and published this in his documentary series Hamilton's Pharmacopeia in 2017. Savinelli as the author, however, ultimately proved to be incorrect. The real author, Ken Nelson, subsequently contacted Morris and proved his identity. In 2020, a new episode of Hamilton's Pharmacopeia revealed Nelson as the true author, and Morris apologized for the mistake. Nelson died due to Parkinson's disease in 2019 prior to the airing. In 2021, with Nelson's permission, Morris (and two producers: Justin Clark and Soren Shade) published a revised and expanded edition of the pamphlet that included a chemical synthesis for 5-MeO-DMT. The inclusion of the synthesis of 5-MeO-DMT was prompted by concerns about endangerment and reduction of the toad population.

🔗 Skepticism 🔗 Psychology 🔗 Sociology 🔗 Paranormal

Nobel disease or Nobelitis is the embracing of strange or scientifically unsound ideas by some Nobel Prize winners, usually later in life. It has been argued that the effect results, in part, from a tendency for Nobel winners to feel empowered by the award to speak on topics outside their specific area of expertise, although it is unknown whether Nobel Prize winners are more prone to this tendency than other individuals. Paul Nurse, co-winner of the 2001 Nobel Prize in Physiology or Medicine, warned later laureates against "believing you are expert in almost everything, and being prepared to express opinions about most issues with great confidence, sheltering behind the authority that the Nobel Prize can give you". Nobel disease has been described as a "tongue in cheek" term.

🔗 Philosophy 🔗 Philosophy/Logic 🔗 Philosophy/Contemporary philosophy 🔗 Philosophy/Ancient philosophy 🔗 Philosophy/Philosophy of mind 🔗 Philosophy/Modern philosophy 🔗 Philosophy/Metaphysics 🔗 Philosophy/Analytic philosophy 🔗 Folklore

In the metaphysics of identity, the ship of Theseus is a thought experiment that raises the question of whether an object that has had all of its components replaced remains fundamentally the same object. The concept is one of the oldest in Western philosophy, having been discussed by the likes of Heraclitus and Plato by ca. 500-400 BC.

🔗 Ancient Near East 🔗 Syria 🔗 Archaeology

Tell Abu Hureyra (Arabic: تل أبو هريرة) is a prehistoric archaeological site in the Upper Euphrates valley in Syria. The tell was inhabited between 13,300 and 7,800 cal. BP in two main phases: Abu Hureyra 1, dated to the Epipalaeolithic, was a village of sedentary hunter-gatherers; Abu Hureyra 2, dated to the Pre-Pottery Neolithic, was home to some of the world's first farmers. This almost continuous sequence of occupation through the Neolithic Revolution has made Abu Hureyra one of the most important sites in the study of the origins of agriculture.

The site is significant because the inhabitants of Abu Hureyra started out as hunter-gatherers but gradually moved to farming, making them the earliest known farmers. Cultivation started at the beginning of the Younger Dryas period at Abu Hureyra. Evidence uncovered at Abu Hureyra suggests that rye was the first cereal crop to be systematically cultivated. In light of this, it is now believed that the first systematic cultivation of cereal crops was around 13,000 years ago.

During the Late Glacial Interstadial, Abu Hureyra site experienced climatic change. Due to lake level changes and aridity, the vegetation expanded into lower areas of the fields. Abu Hureyra accumulated vegetation that consisted of grasses, oaks, and Pistacia atlantica trees. The climate changed from warm and dry months to abruptly cold and dry months.