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English Wikipedia references for Fourmilab.ch 1-20 of 288
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| Ada Lovelace Augusta Ada King, Countess of Lovelace (10 December 1815, London – 27 November 1852, Marylebone, London), born Augusta Ada Byron, was the only legitimate child of poet Lord Byron. She is widely known in modern times simply as Ada Lovelace.She is mainly known for having written a description of Charles Babbage's early mechanical general-purpose computer, the analytical engine. Ada_Lovelace | |
| Analytical engine analytical engine, an important step in the history of computers, was the design of a mechanical general-purpose computer by the British mathematician Charles Babbage. It was first described in 1837, but Babbage continued to work on the design until his death in 1871. Because of financial, political, and legal issues, the engine was never built. In its logical design the machine was essentially modern, anticipating the first completed general-purpose computers by about 100 Analytical_engine | |
| Ada Lovelace Talk:Ada_Lovelace | |
| Ada Byron's notes on the analytical engine Ada_Byron's_notes_on_the_analytical_engine | |
| Anno Domini ''''''AD or A.D., and Before Christ'BC or B.C., are designations used to number years in the Julian and Gregorian calendars. calendar era to which they refer is based on the traditionally reckoned year of the conception or birth of Jesus, with AD denoting years after the start of this epoch, and BC denoting years before the start of this epoch. There is no year zero in this scheme, so the year AD Anno_Domini | |
| Bernoulli number mathematics, the Bernoulli numbers are a sequence of rational numbers with deep connections to number theory. They are closely related to the values of the Riemann zeta function at negative integers.In Europe, they were first studied by Jakob Bernoulli, after whom they were named by Abraham de Moivre. Bernoulli_number | |
| Computer/Archive 3 Talk:Computer/Archive_3 | |
| Day A day (symbol d) is a unit of time equivalent to approximately 24 hours. It is not an SI unit but it is accepted for use with SI. The SI unit of time is the second. Day | |
| Electromagnetic field The electromagnetic field is a physical field produced by electrically charged objects. It affects the behavior of charged objects in the vicinity of the field.The electromagnetic field extends indefinitely throughout space and describes the electromagnetic interaction. Electromagnetic_field | |
| French Republican Calendar Talk:French_Republican_Calendar | |
| Gregorian calendar The Gregorian calendar is the internationally accepted civil calendar. It was first proposed by the Calabrian doctor Aloysius Lilius, and decreed by Pope Gregory XIII, after whom it was named, on 24 February 1582 by the papal bull Inter gravissimas.It is a reform of the Julian calendar. Gregorian_calendar | |
| History of computing hardware The history of computing hardware encompasses the hardware, its architecture, and its impact on software. The von Neumann architecture unifies our current computing hardware implementations. History_of_computing_hardware | |
| Julian calendar Julian calendar, a reform of the Roman calendar, was introduced by Julius Caesar in 46 BC, and came into force in 45 BC (709 ab urbe condita). It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed to approximate the tropical year, known at least since Hipparchus. It has a regular year of 365 days divided into 12 months, and a leap day is added to February every four years. Hence the Julian year is on average 365.25 days long. Julian_calendar | |
| Mercury (planet) Mercury_(planet) | |
| Magnetism In physics, magnetism is one of the forces in which materials and moving charged particles exert attractive, repulsive force or moments on other materials or charged particles. Some well-known materials that exhibit easily detectable magnetic properties (called magnets) are nickel, iron, cobalt, gadolinium and their alloys; however, all materials are influenced to greater or lesser degree by the presence of a magnetic field. Magnetism | |
| Maxwell's equations In electromagnetism, Maxwell's equations are a set of four partial differential equations that describe the properties of the electric and magnetic fields and relate them to their sources, charge density and current density. These equations are used to show that light is an electromagnetic wave. Individually, the equations are known as Gauss's law, Gauss's law for magnetism, Faraday's law of induction, and Ampère's law with Maxwell's correction. Maxwell's_equations | |
| Martin Gardner Martin Gardner (born October 21, 1914, Tulsa, Oklahoma) is an American mathematics and science writer specializing in recreational mathematics, but with interests encompassing stage magic, pseudoscience, literature (especially the writings of Lewis Carroll), philosophy, scientific skepticism, and religion. He wrote the Mathematical Games column in Scientific American from 1956 to 1981, and he has published over 70 books. Martin_Gardner | |
| Pseudorandomness A pseudo random process is a process that appears random but is not. Pseudo random sequences typically exhibit statistical randomness while being generated by an entirely deterministic causal process. Such a process is easier to produce than a genuine random one, and has the benefit that it can be used again and again to produce exactly the same numbers, useful for testing and fixing software. Pseudorandomness | |
| Punched card punch card or punched card (or punchcard or Hollerith card or IBM card), is a piece of stiff paper that contains digital information represented by the presence or absence of holes in predefined positions. Now almost an obsolete recording medium, punched cards were widely used throughout the 19th century for controlling textile looms and in the late 19th and early 20th century for operating fairground organs and related instruments. Punched_card | |
| Rocket A rocket or rocket vehicle is a missile, aircraft or other vehicle which obtains thrust by the reaction of the rocket to the ejection of fast moving fluid exhaust from a rocket engine. Chemical rockets create their exhaust by the combustion of rocket propellant. The action of the exhaust against the inside of combustion chambers and expansion nozzles accelerates the gas to extremely high speed and exerts a large reactive thrust on the rocket (since every action has an equal and opposite reaction). Rocket |
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