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Richard Phillips Feynman (/ ˈ f aɪ n m ə n /; May 11, 1918 – February 15, 1988) was an American theoretical physicist, known for his work in the path integral formulation of quantum mechanics, the theory of quantum electrodynamics, the physics of the superfluidity of supercooled liquid helium, as well as his work in particle physics for which he proposed the parton model.
Hamilton. (musical) Cast members perform selections from the musical at the White House, 2016. L–R: Lin-Manuel Miranda, Phillipa Soo, Leslie Odom Jr., and Christopher Jackson. Hamilton: An American Musical is a sung-and-rapped-through biographical musical with music, lyrics, and a book by Lin-Manuel Miranda as well as choreography by Andy ...
Byzantine Empire. The Byzantine Empire, also referred to as the Eastern Roman Empire, was the continuation of the Roman Empire centered in Constantinople during Late Antiquity and the Middle Ages. The eastern half of the Empire survived the conditions that caused the fall of the West in the 5th century AD, and continued to exist until the fall ...
The Chernobyl disaster [a] began on 26 April 1986 with the explosion of the No. 4 reactor of the Chernobyl Nuclear Power Plant, near the city of Pripyat in the north of the Ukrainian SSR, close to the border with the Byelorussian SSR, in the Soviet Union. [1] It is one of only two nuclear energy accidents rated at seven—the maximum severity ...
Roman numerals are sometimes used to represent the days of the week in hours-of-operation signs displayed in windows or on doors of businesses, [73] and also sometimes in railway and bus timetables. Monday, taken as the first day of the week, is represented by I. Sunday is represented by VII.
Huawei FreeBuds are wireless Bluetooth and NearLink earbuds. They were first announced and released on March 27, 2018, alongside the Huawei P20 series.In addition to playing audio, the Huawei FreeBuds contain built-in microphones for noise cancellation, accelerometers, and optical sensors to detect wear status and gestures (e.g., double-tap to pause audio).
Starlink is a satellite internet constellation operated by Starlink Services, LLC, a wholly-owned subsidiary of American aerospace company SpaceX, [3] providing coverage to over 75 countries. It also aims to provide global mobile broadband. [4] SpaceX started launching Starlink satellites in 2019.
The Castle of Almourol is a medieval castle atop the islet of Almourol in the middle of the Tagus River, located in the civil parish of Praia do Ribatejo, 4 kilometres (2.5 mi) from the municipal seat of Vila Nova da Barquinha, in Portugal 's Centre Region. The castle was part of the defensive line controlled by the Knights Templar, and a ...