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πŸ”— Dusty Hill of ZZ Top Dead

πŸ”— United States πŸ”— Biography πŸ”— United States/Texas πŸ”— Biography/Musicians

Joseph Michael "Dusty" Hill (May 19, 1949 – July 28, 2021) was an American musician, singer, and songwriter, best known as the bassist and secondary lead vocalist of the American rock group ZZ Top; he also played keyboards with the band. He was inducted into the Rock and Roll Hall of Fame, as a member of ZZ Top, in 2004.

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πŸ”— Fall of Saigon

πŸ”— Military history πŸ”— Military history/North American military history πŸ”— Military history/United States military history πŸ”— Cold War πŸ”— Military history/Asian military history πŸ”— Military history/Southeast Asian military history πŸ”— Vietnam

The Fall of Saigon, also known as the Liberation of Saigon by North Vietnamese, was the capture of Saigon, the capital of South Vietnam, by the People's Army of Vietnam (PAVN) and the Viet Cong on 30 April 1975. The event marked the end of the Vietnam War and the start of a transition period to the formal reunification of Vietnam into the Socialist Republic of Vietnam.

The PAVN, under the command of General Văn Tiến Dũng, began their final attack on Saigon on 29 April 1975, with the Army of the Republic of Vietnam (ARVN) forces commanded by General Nguyễn Văn Toàn suffering a heavy artillery bombardment. By the afternoon of the next day, the PAVN had occupied the important points of the city and raised their flag over the South Vietnamese presidential palace. The city was renamed Hồ Chí Minh City, after the late North Vietnamese President Hồ Chí Minh.

The capture of the city was preceded by Operation Frequent Wind, the evacuation of almost all American civilian and military personnel in Saigon, along with tens of thousands of South Vietnamese civilians who had been associated with the Republic of Vietnam. A few Americans chose not to be evacuated. United States ground combat units had left South Vietnam more than two years prior to the fall of Saigon and were not available to assist with either the defense of Saigon or the evacuation. The evacuation was the largest helicopter evacuation in history. In addition to the flight of refugees, the end of the war and the institution of new rules by the communists contributed to a decline in the city's population.

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πŸ”— Siemens Synthesizer – Studio for Electronic Music

πŸ”— Musical Instruments

The Siemens Synthesizer (or "Siemens Studio fΓΌr Elektronische Musik") was developed in Germany in 1959 by the German electronics manufacturer Siemens, originally to compose live electronic music for its own promotional films.

From 1956 to 1967, it had a significant influence on the development of electronic music. Among others, Mauricio Kagel, Henri Pousseur, Herbert BrΓΌn and Ernst Krenek completed important electronic works there.

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πŸ”— One electron universe

πŸ”— Physics

The one-electron universe postulate, proposed by John Wheeler in a telephone call to Richard Feynman in the spring of 1940, is the hypothesis that all electrons and positrons are actually manifestations of a single entity moving backwards and forwards in time. According to Feynman:

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πŸ”— Prawo Jazdy (Alleged Criminal)

πŸ”— Crime πŸ”— Law πŸ”— Law Enforcement πŸ”— Automobiles πŸ”— Ireland

"Prawo Jazdy" was a supposed Polish national who was listed by the Garda SΓ­ochΓ‘na in a police criminal database as having committed more than 50 traffic violations in Ireland. A 2007 memorandum stated that an investigation revealed prawo jazdy [ˈpra.vΙ” ˈjaz.dΙ¨] to be Polish for 'driving licence', with the error arising due to officers mistaking the phrase, printed on Polish driving licenses, to be a personal name while issuing traffic tickets.

πŸ”— Apple has not made any significant donations to charity since 1997

πŸ”— Switzerland

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πŸ”— Naming Law

πŸ”— Anthroponymy

A naming law restricts the names that parents can legally give to their children, usually to protect the child from being given an offensive or embarrassing name. Many countries around the world have such laws, with most governing the meaning of the name, while some only govern the scripts in which it is written.

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πŸ”— Kintsugi

πŸ”— Visual arts πŸ”— Japan πŸ”— Japan/Culture πŸ”— Collections Care

Kintsugi (ι‡‘ηΆ™γŽ, "golden joinery"), also known as kintsukuroi (金繕い, "golden repair"), is the Japanese art of repairing broken pottery by mending the areas of breakage with lacquer dusted or mixed with powdered gold, silver, or platinum, a method similar to the maki-e technique. As a philosophy, it treats breakage and repair as part of the history of an object, rather than something to disguise.

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πŸ”— Gate Tower Building

πŸ”— Architecture πŸ”— Japan

Gate Tower Building (γ‚²γƒΌγƒˆγ‚Ώγƒ―γƒΌγƒ“γƒ«, gΔ“to tawā biru) is a 16 floor office building in Fukushima-ku, Osaka, Japan. It is notable for the highway offramp at Umeda Exit that passes through the building.

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πŸ”— Optimal Stopping

πŸ”— Mathematics πŸ”— Statistics

In mathematics, the theory of optimal stopping or early stopping is concerned with the problem of choosing a time to take a particular action, in order to maximise an expected reward or minimise an expected cost. Optimal stopping problems can be found in areas of statistics, economics, and mathematical finance (related to the pricing of American options). A key example of an optimal stopping problem is the secretary problem. Optimal stopping problems can often be written in the form of a Bellman equation, and are therefore often solved using dynamic programming.

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