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Michael Hartl
Michael Hartl is an American physicist, author, and entrepreneur. He is best known as the creator of the ''Ruby on Rails Tutorial'', founder of Tau Day, and author of ''The Tau Manifesto'', in which he proposes replacing pi () with tau (number), tau (). Education In the 1990s, Hartl attended Harvard University for his undergraduate studies, graduating with a bachelor's degree in physics. Hartl obtained his PhD in Physics from the California Institute of Technology (Caltech) in 2003, where he researched black hole dynamics. His dissertation was titled ''Dynamics of Spinning Compact Binaries in General Relativity''. Career After finishing his PhD, Hartl served as Caltech's editor on a corrected and expanded version of ''The Feynman Lectures on Physics'' at the request of Kip Thorne. Explaining in the preface why he chose Hartl for the task, Thorne noted that "Hartl understand physics deeply, he is among the most meticulous physicists I have known, and like Richard Feynman, Feynma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
June 28
Events Pre-1600 *1098 – Fighters of the First Crusade defeat Kerbogha, Kerbogha of Mosul at the Battle of Antioch (1098), battle of Antioch. *1360 – Muhammed VI, Sultan of Granada, Muhammed VI becomes the tenth Nasrid dynasty, Nasrid king of Emirate of Granada, Granada after killing his brother-in-law Ismail II, Sultan of Granada, Ismail II. *1461 – Edward, Earl of March, is crowned King Edward IV of England. *1495 – A French force heavily defeats a much larger Neapolitan and Spanish army at the battle of Seminara, leading to the creation of the Tercios by Gonzalo de Córdoba. *1519 – Charles V, Holy Roman Emperor, Charles V is elected Emperor of the Holy Roman Empire. *1575 – Sengoku period of Japan: The combined forces of Oda Nobunaga and Tokugawa Ieyasu are victorious in the Battle of Nagashino. 1601–1900 *1635 – Guadeloupe becomes a French colony. *1651 – The Battle of Berestechko between Polish–Lithuanian Commonwealth, P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computational Physicists
A computation is any type of arithmetic or non-arithmetic calculation that is well-defined. Common examples of computation are mathematical equation solving and the execution of computer algorithms. Mechanical or electronic devices (or, historically, people) that perform computations are known as ''computers''. Computer science is an academic field that involves the study of computation. Introduction The notion that mathematical statements should be 'well-defined' had been argued by mathematicians since at least the 1600s, but agreement on a suitable definition proved elusive. A candidate definition was proposed independently by several mathematicians in the 1930s. The best-known variant was formalised by the mathematician Alan Turing, who defined a well-defined statement or calculation as any statement that could be expressed in terms of the initialisation parameters of a Turing machine. Other (mathematically equivalent) definitions include Alonzo Church's '' lambda-definabili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California Institute Of Technology Alumni
California () is a state in the Western United States that lies on the Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares an international border with the Mexican state of Baja California to the south. With almost 40million residents across an area of , it is the largest state by population and third-largest by area. Prior to European colonization, California was one of the most culturally and linguistically diverse areas in pre-Columbian North America. European exploration in the 16th and 17th centuries led to the colonization by the Spanish Empire. The area became a part of Mexico in 1821, following its successful war for independence, but was ceded to the United States in 1848 after the Mexican–American War. The California gold rush started in 1848 and led to social and demographic changes, including depopulation of Indigenous tribes. It organized itself and was admitted as the 31st state in 1850 as a free state, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
21st-century American Mathematicians
File:1st century collage.png, From top left, clockwise: Jesus is crucified by Roman authorities in Judaea (17th century painting). Four different men ( Galba, Otho, Vitellius, and Vespasian) claim the title of Emperor within the span of a year; The Great Fire of Rome (18th-century painting) sees the destruction of two-thirds of the city, precipitating the empire's first persecution against Christians, who are blamed for the disaster; The Roman Colosseum is built and holds its inaugural games; Roman forces besiege Jerusalem during the First Jewish–Roman War (19th-century painting); The Trưng sisters lead a rebellion against the Chinese Han dynasty (anachronistic depiction); Boudica, queen of the British Iceni leads a rebellion against Rome (19th-century statue); Knife-shaped coin of the Xin dynasty., 335px rect 30 30 737 1077 Crucifixion of Jesus rect 767 30 1815 1077 Year of the Four Emperors rect 1846 30 3223 1077 Great Fire of Rome rect 30 1108 1106 2155 Boudic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Living People
Purpose: Because living persons may suffer personal harm from inappropriate information, we should watch their articles carefully. By adding an article to this category, it marks them with a notice about sources whenever someone tries to edit them, to remind them of WP:BLP (biographies of living persons) policy that these articles must maintain a neutral point of view, maintain factual accuracy, and be properly sourced. Recent changes to these articles are listed on Special:RecentChangesLinked/Living people. Organization: This category should not be sub-categorized. Entries are generally sorted by family name In many societies, a surname, family name, or last name is the mostly hereditary portion of one's personal name that indicates one's family. It is typically combined with a given name to form the full name of a person, although several give .... Maintenance: Individuals of advanced age (over 90), for whom there has been no new documentation in the last ten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elon Musk
Elon Reeve Musk ( ; born June 28, 1971) is a businessman. He is known for his leadership of Tesla, SpaceX, X (formerly Twitter), and the Department of Government Efficiency (DOGE). Musk has been considered the wealthiest person in the world since 2021; ''Forbes'' estimates his net worth to be . Born to a wealthy family in Pretoria, South Africa, Musk emigrated in 1989 to Canada. He received bachelor's degrees from the University of Pennsylvania in 1997 before moving to California, United States, to pursue business ventures. In 1995, Musk co-founded the software company Zip2. Following its sale in 1999, he co-founded X.com, an online payment company that later merged to form PayPal, which was acquired by eBay in 2002. That year, Musk also became an American citizen. In 2002, Musk founded the space technology company SpaceX, becoming its CEO and chief engineer; the company has since led innovations in reusable rockets and commercial spaceflight. Musk joined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitalik Buterin
Vitaly Dmitrievich Buterin (; born 31 January 1994), better known as Vitalik Buterin (), is a Canadian computer programmer and co-founder of Ethereum. Buterin became involved with cryptocurrency early in its inception, co-founding ''Bitcoin Magazine'' in 2011. In 2015, Buterin deployed the Ethereum blockchain with Gavin Wood, Charles Hoskinson, Anthony Di Iorio, and Joseph Lubin (entrepreneur), Joseph Lubin. Early life and education Buterin was born in Kolomna, Russia, to a Russian family. His father, Dmitry, was a computer scientist. He and his parents lived in the area until the age of six, when his parents Immigration to Canada, emigrated to Canada in search of better employment opportunities. While in grade three of elementary school in Canada, Buterin was placed into a class for gifted children and was drawn to mathematics, programming, and economics. Buterin then attended The Abelard School, a private high school in Toronto. Buterin learned about Bitcoin from his father ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vi Hart
Victoria "Vi" Hart ( ; born 1988) is an American mathematician and former YouTuber. They describe themself as a "recreational mathemusician" and are well-known for creating mathematical videos on YouTube and popularizing mathematics. Hart founded the virtual reality research group eleVR and has co-authored several research papers on computational geometry and the mathematics of paper folding. Together with another YouTube mathematics popularizer, Matt Parker, Hart won the 2018 Communications Award of the Joint Policy Board for Mathematics for "entertaining, thought-provoking mathematics and music videos on YouTube that explain mathematical concepts through doodles". Career Hart's career as a mathematics popularizer began in 2010 with a video series about "doodling in math class". After these recreational mathematics videos—which introduced topics like fractal dimensions—grew popular, Hart was featured in ''The New York Times'' and on National Public Radio, eventually gai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simons Laufer Mathematical Sciences Institute
The Simons Laufer Mathematical Sciences Institute (SLMath), formerly the Mathematical Sciences Research Institute (MSRI), is an independent nonprofit mathematical research institution on the University of California campus in Berkeley, California. It is a mathematical center for collaborative research, drawing thousands of researchers each year. The institute was founded in 1982, and its funding sources include the National Science Foundation, private foundations, corporations, and more than 90 universities and institutions. The institute is located at 17 Gauss Way on the Berkeley campus, close to Grizzly Peak in the Berkeley Hills. Given its contribution to the nation's scientific potential, the institute is supported by the National Science Foundation and the National Security Agency. Private individuals, foundations, and nearly 100 Academic Sponsor Institutions, including mathematics departments in the United States, also provide support and flexibility. Jim Simons, foun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massachusetts Institute Of Technology
The Massachusetts Institute of Technology (MIT) is a Private university, private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of modern technology and science. In response to the increasing Technological and industrial history of the United States, industrialization of the United States, William Barton Rogers organized a school in Boston to create "useful knowledge." Initially funded by a land-grant universities, federal land grant, the institute adopted a Polytechnic, polytechnic model that stressed laboratory instruction in applied science and engineering. MIT moved from Boston to Cambridge in 1916 and grew rapidly through collaboration with private industry, military branches, and new federal basic research agencies, the formation of which was influenced by MIT faculty like Vannevar Bush. In the late twentieth century, MIT became a leading center for research in compu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Python (programming Language)
Python is a high-level programming language, high-level, general-purpose programming language. Its design philosophy emphasizes code readability with the use of significant indentation. Python is type system#DYNAMIC, dynamically type-checked and garbage collection (computer science), garbage-collected. It supports multiple programming paradigms, including structured programming, structured (particularly procedural programming, procedural), object-oriented and functional programming. It is often described as a "batteries included" language due to its comprehensive standard library. Guido van Rossum began working on Python in the late 1980s as a successor to the ABC (programming language), ABC programming language, and he first released it in 1991 as Python 0.9.0. Python 2.0 was released in 2000. Python 3.0, released in 2008, was a major revision not completely backward-compatible with earlier versions. Python 2.7.18, released in 2020, was the last release of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
