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🔗 United States 🔗 Film 🔗 Library of Congress 🔗 Film/American cinema 🔗 Film/Silent films 🔗 Film/Documentary films 🔗 United States/Film - American cinema

A Trip Down Market Street is a 13-minute actuality film recorded by placing a movie camera on the front of a cable car as it traveled down San Francisco’s Market Street. The film shows many details of daily life in a major early 20th century American city, including the transportation, fashions and architecture of the era. The film begins at 8th Street and continues eastward to the cable car turntable, at The Embarcadero, in front of the Ferry Building. Landmarks passed in the latter part of the first half include the Call Building (then San Francisco's tallest) and the Palace Hotel (both on the right; Lotta's Fountain is on the left between the two but is in the shade). The film was produced by the four Miles brothers: Harry, Herbert, Earle and Joe. It is notable for capturing San Francisco four days before the 1906 San Francisco earthquake, which started on the morning of Wednesday, April 18, 1906.

The Miles brothers had been producing films in New York including films shot in San Francisco. In September 1905 they shot the fight between Oscar "Battling" Nelson and Jimmy Britt in Colma, California, just south of San Francisco city limits. The Miles brothers established a studio at 1139 Market Street in San Francisco in early 1906. They shot a railroad descent down Mount Tamalpais as well as the Market Street film. On April 17, Harry and Joe Miles boarded a train for New York, taking the two films with them, but they heard about the earthquake and sent the films to New York while they boarded another train headed back to San Francisco. The Turk Street house of Earle Miles survived the earthquake and subsequent catastrophic fire but the studio did not. The Miles brothers based their business out of Earle's home, and shot more film of post-earthquake scenes; some of this footage, including that of a second trip down a now devastated Market Street, reemerged in 2016. It is likely that the Market Street film survives today because it was sent away before the fire.

Several 35mm prints exist with slight changes in footage. Copies are held at the Library of Congress and the Prelinger Archives. A digital version is viewable online at Internet Archive, YouTube and Wikimedia Commons. In 2010, the film was selected for preservation in the National Film Registry by the Library of Congress.

"Fart Proudly" (also called "A Letter to a Royal Academy about farting", and "To the Royal Academy of Farting") is the popular name of an essay about flatulence written by Benjamin Franklin c. 1781 while he was living abroad as United States Ambassador to France. It is an example of flatulence humor.

🔗 Technology 🔗 Military history 🔗 Military history/Military science, technology, and theory 🔗 Military history/Maritime warfare

Communication with submarines is a field within military communications that presents technical challenges and requires specialized technology. Because radio waves do not travel well through good electrical conductors like salt water, submerged submarines are cut off from radio communication with their command authorities at ordinary radio frequencies. Submarines can surface and raise an antenna above the sea level, then use ordinary radio transmissions, however this makes them vulnerable to detection by anti-submarine warfare forces. Early submarines during World War II mostly traveled on the surface because of their limited underwater speed and endurance; they dove mainly to evade immediate threats. During the Cold War, however, nuclear-powered submarines were developed that could stay submerged for months. Transmitting messages to these submarines is an active area of research. Very low frequency (VLF) radio waves can penetrate seawater a few hundred feet, and many navies use powerful VLF transmitters for submarine communications. A few nations have built transmitters which use extremely low frequency (ELF) radio waves, which can penetrate seawater to reach submarines at operating depths, but these require huge antennas. Other techniques that have been used include sonar and blue lasers.

🔗 Judaism 🔗 Writing systems 🔗 Kabbalah

Gematria (; Hebrew: גמטריא or gimatria גימטריה, plural גמטראות or גימטריאות, gimatriot) is the practice of assigning a numerical value to a name, word or phrase by reading it as a number, or sometimes by using an alphanumerical cipher. The letters of the alphabets involved have standard numerical values, but a word can yield several values if a cipher is used.

According to Aristotle (384–322 BCE), isopsephy, based on the Milesian numbering of the Greek alphabet developed in the Greek city of Miletus, was part of the Pythagorean tradition, which originated in the 6th century BCE. The first evidence of use of Hebrew letters as numbers dates to 78 BCE; gematria is still used in Jewish culture. Similar systems have been used in other languages and cultures, derived from or inspired by either Greek isopsephy or Hebrew gematria, and include Arabic abjad numerals and English gematria.

The most common form of Hebrew gematria is used in the Talmud and Midrash, and elaborately by many post-Talmudic commentators. It involves reading words and sentences as numbers, assigning numerical instead of phonetic value to each letter of the Hebrew alphabet. When read as numbers, they can be compared and contrasted with other words or phrases – cf. the Hebrew proverb נכנס יין יצא סוד (nichnas yayin yatza sod, lit. 'wine entered, secret went out', i.e. "in vino veritas"). The gematric value of יין ('wine') is 70 (י=10; י=10; ן=50) and this is also the gematric value of סוד ('secret', ס=60; ו=6; ד=4)‎.

Although a type of gematria system ('Aru') was employed by the ancient Babylonian culture, their writing script was logographic, and the numerical assignments they made were to whole words. Aru was very different from the Milesian systems used by Greek and Hebrew cultures, which used alphabetic writing scripts. The value of words with Aru were assigned in an entirely arbitrary manner and correspondences were made through tables, and so cannot be considered a true form of gematria.

Gematria sums can involve single words, or a string of lengthy calculations. A short example of Hebrew numerology that uses gematria is the word חי (chai, lit. 'alive'), which is composed of two letters that (using the assignments in the mispar gadol table shown below) add up to 18. This has made 18 a "lucky number" among the Jewish people. Donations of money in multiples of 18 are very popular.

In early Jewish sources, the term can also refer to other forms of calculation or letter manipulation, for example atbash.

🔗 Physics 🔗 Astronomy

Przybylski's Star (pronounced or ), or HD 101065, is a rapidly oscillating Ap star at roughly 355 light-years (109 parsecs) from the Sun in the southern constellation of Centaurus.

🔗 England 🔗 Linguistics 🔗 Linguistics/Applied Linguistics 🔗 Languages 🔗 Politics of the United Kingdom

Linguistic purism in English is the preference for using words of native origin rather than foreign-derived ones. "Native" can mean "Anglo-Saxon" or it can be widened to include all Germanic words. Linguistic purism in English primarily focuses on words of Latinate and Greek origin, due to their prominence in the English language and the belief that they may be difficult to understand. In its mildest form, it merely means using existing native words instead of foreign-derived ones (such as using begin instead of commence). In a less mild form, it also involves coining new words from Germanic roots (such as wordstock for vocabulary). In a more extreme form, it also involves reviving native words which are no longer widely used (such as ettle for intend). The resulting language is sometimes called Anglish (coined by the author and humorist Paul Jennings), or Roots English (referring to the idea that it is a "return to the roots" of English). The mild form is often advocated as part of Plain English, but the more extreme form has been and is still a fringe movement; the latter can also be undertaken as a form of constrained writing.

English linguistic purism is discussed by David Crystal in the Cambridge Encyclopedia of the English Language. The idea dates at least to the inkhorn term controversy of the 16th and 17th centuries. In the 19th century, writers such as Charles Dickens, Thomas Hardy and William Barnes advocated linguistic purism and tried to introduce words like birdlore for ornithology and bendsome for flexible. A notable supporter in the 20th century was George Orwell, who had a preference for plain Saxon words over complex Latin or Greek ones, and the idea continues to have advocates today.

🔗 Video games 🔗 Military history 🔗 Military history/Military science, technology, and theory 🔗 Board and table games

The fog of war (German: Nebel des Krieges) is the uncertainty in situational awareness experienced by participants in military operations. The term seeks to capture the uncertainty regarding one's own capability, adversary capability, and adversary intent during an engagement, operation, or campaign. Military forces try to reduce the fog of war through military intelligence and friendly force tracking systems. The term has become commonly used to define uncertainty mechanics in wargames.

🔗 Theatre 🔗 Elizabethan theatre

The Parnassus plays are three satiric comedies, or full-length academic dramas, each divided into five acts. They date from between 1598 and 1602. They were performed in London by students for an audience of students as part of the Christmas festivities of St John's College at Cambridge University. It is not known who wrote them.

The titles of the three plays are

• The Pilgrimage to Parnassus
• The Return from Parnassus
• The Return from Parnassus: Or the Scourge of Simony

The second and third plays are sometimes referred to as Part One and Part Two of The Return from Parnassus.

The trilogy raises an Elizabethan question: After college – what comes next? Francis Bacon in his essay "Of Seditions and Troubles" pointed to a 16th-century problem – universities were producing more scholars than there were opportunities for them. The University Wits – Lily, Marlowe, Green, Peele, Nashe and Lodge – were scholars who found employment in theatre, not perhaps their first choice, but there was little else for them. Their great education tended to discourage them from taking up the humble trades of their fathers. The Parnassus plays may not provide a solution, but they at least illustrated the fears of such ambitious young scholastic dreamers.

For the most part, the plays follow the experiences of two students, Philomusus and Studioso. The first play tells the story of two pilgrims on a journey to Parnassus. The plot is an allegory understood to represent the story of two students progressing through the traditional course of education known as the trivium. The accomplishment of their education is represented by Mount Parnassus. The second play drops the allegory and describes the two graduates' unsuccessful attempts to make a living, as does the third play, which is the only one that was contemporaneously published. New in the third play is the serious treatment of issues regarding censorship.

It has been said that this trilogy of plays "in originality and breadth of execution, and in complex relationship to the academic, literary, theatrical and social life of the period, ranks supreme among the extant memorials of the university stage", and that they are "among the most inexplicably neglected key documents of Shakespeare's age".

🔗 Biography 🔗 Comedy 🔗 Politics 🔗 Biography/politics and government 🔗 Politics of the United Kingdom

Count Binface is a satirical perennial candidate created by the British comedian Jonathan David Harvey in 2018. He was a candidate for Uxbridge and South Ruislip in the 2019 United Kingdom general election against the then prime minister, Boris Johnson. He also stood in the London Mayoral elections in 2021 and 2024.

In earlier elections, Harvey stood as Lord Buckethead, but was forced to change the character due to a copyright dispute with the American filmmaker Todd Durham, who created Lord Buckethead for his 1984 science fiction film Hyperspace. Since then Harvey has used the forced name change to his advantage by using the platform of Binface to promote electoral participation, with the slogan, "Make your vote COUNT".

In 2019, another individual contested the Uxbridge and South Ruislip seat as Buckethead, representing the Official Monster Raving Loony Party, to which Binface said he "look[s] forward to both the hustings and to challenging [him] to take part in a receptacle-to-receptacle debate".

When Johnson resigned as an MP in 2023, Binface again stood as a candidate in the Uxbridge and South Ruislip by-election, finishing eighth of 17. Originally standing as an independent, since 2023 his affiliation has been given as Count Binface Party on ballot papers. Count Binface plans to contest the seat of current UK prime minister, Rishi Sunak, in Richmond and Northallerton, in the 2024 general election on 4 July.

🔗 Computer science

In computer architecture, Amdahl's law (or Amdahl's argument) is a formula which gives the theoretical speedup in latency of the execution of a task at fixed workload that can be expected of a system whose resources are improved. It is named after computer scientist Gene Amdahl, and was presented at the AFIPS Spring Joint Computer Conference in 1967.

Amdahl's law is often used in parallel computing to predict the theoretical speedup when using multiple processors. For example, if a program needs 20 hours to complete using a single thread, but a one-hour portion of the program cannot be parallelized, therefore only the remaining 19 hours (p = 0.95) of execution time can be parallelized, then regardless of how many threads are devoted to a parallelized execution of this program, the minimum execution time cannot be less than one hour. Hence, the theoretical speedup is limited to at most 20 times the single thread performance, ${\displaystyle \left({\dfrac {1}{1-p}}=20\right)}$.