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1993 In Science
The year 1993 in science and technology involved many significant events, listed below. Astronomy and space exploration * February 13 – Asteroid 7253 Nara is discovered by Fumiaki Uto. * December 2 – STS-61 is launched. This Space Shuttle mission to the Hubble Space Telescope (HST) installs corrective optics, plus upgrades, that not only allow the telescope to focus properly, but also increase magnification/clarity beyond the original design. HST had been pre-designed for such continuous improvement. * The first definite asteroid moon is confirmed when the Galileo probe discovers Dactyl orbiting 243 Ida. Computer science * March 22 – The Intel Corporation ships the first Pentium chips * March 31 – A bug in a program written by Richard Depew sends an article to 200 newsgroups simultaneously. The term spamming is coined by Joel Furr to describe the incident. * April – Release of the Sibelius music notation program, developed by British twins Ben and Jonathan Fin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joel Furr
Joel K. "Jay" Furr (born 1967 in Roanoke, Virginia) is an American writer and software trainer, notable as a Usenet personality in the early and mid-1990s. According to Brad Templeton, Furr is one of the earliest people to refer to unsolicited electronic messages as "spam". The term "spam" had been widely used by Monty Python fans to describe excessive torrents of verbiage on electronic chat systems and multi-user dungeons, analogous to the Vikings chanting "Spam, Spam, Spam, Spam… Lovely Spam! Wonderful Spam!" in the famous Python sketch. Furr used the term in the Usenet newsgroup news.admin.policy to describe an out-of-control automated robo-moderation system known as ARMM. While he didn't coin the phrase, he appears to have been the first to use it to describe the phenomenon as it applied to USENET newsgroups. Furr created a line of Usenet kook T-shirts, which included a " Serdar Argic World Tour" shirt as well as one imprinted with the programming code for RSA encryption ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fermat's Last Theorem
In number theory, Fermat's Last Theorem (sometimes called Fermat's conjecture, especially in older texts) states that no three positive number, positive integers , , and satisfy the equation for any integer value of greater than . The cases and have been known since antiquity to have infinitely many solutions.Singh, pp. 18–20 The proposition was first stated as a theorem by Pierre de Fermat around 1637 in the margin of a copy of ''Arithmetica''. Fermat added that he had a proof that was too large to fit in the margin. Although other statements claimed by Fermat without proof were subsequently proven by others and credited as theorems of Fermat (for example, Fermat's theorem on sums of two squares), Fermat's Last Theorem resisted proof, leading to doubt that Fermat ever had a correct proof. Consequently, the proposition became known as a conjecture rather than a theorem. After 358 years of effort by mathematicians, Wiles's proof of Fermat's Last Theorem, the first success ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andrew Wiles
Sir Andrew John Wiles (born 11 April 1953) is an English mathematician and a Royal Society Research Professor at the University of Oxford, specialising in number theory. He is best known for Wiles's proof of Fermat's Last Theorem, proving Fermat's Last Theorem, for which he was awarded the 2016 Abel Prize and the 2017 Copley Medal and for which he was appointed a Order of the British Empire, Knight Commander of the Order of the British Empire in 2000. In 2018, Wiles was appointed the first Regius Professor of Mathematics at Oxford. Wiles is also a MacArthur Fellows Program, 1997 MacArthur Fellow. Wiles was born in Cambridge to theologian Maurice Frank Wiles and Patricia Wiles. While spending much of his childhood in Nigeria, Wiles developed an interest in mathematics and in Fermat's Last Theorem in particular. After moving to Oxford and graduating from there in 1974, he worked on unifying Galois representations, elliptic curves and modular forms, starting with Barry Mazur's gene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Particle Filter
Particle filters, also known as sequential Monte Carlo methods, are a set of Monte Carlo algorithms used to find approximate solutions for filtering problems for nonlinear state-space systems, such as signal processing and Bayesian statistical inference. The filtering problem consists of estimating the internal states in dynamical systems when partial observations are made and random perturbations are present in the sensors as well as in the dynamical system. The objective is to compute the posterior distributions of the states of a Markov process, given the noisy and partial observations. The term "particle filters" was first coined in 1996 by Pierre Del Moral about mean-field interacting particle methods used in fluid mechanics since the beginning of the 1960s. The term "Sequential Monte Carlo" was coined by Jun S. Liu and Rong Chen in 1998. Particle filtering uses a set of particles (also called samples) to represent the posterior distribution of a stochastic process giv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adobe Acrobat
Adobe Acrobat is a family of application software and web services developed by Adobe Inc. to view, create, manipulate, print and manage Portable Document Format (PDF) files. The family comprises Acrobat Reader (formerly Reader), Acrobat (formerly Exchange) and Acrobat.com. The basic Acrobat Reader, available for several desktop and mobile platforms, is freeware; it supports viewing, printing, scaling or resizing and annotating of PDF files. Additional, "Premium", services are available on paid subscription. The commercial proprietary Acrobat, available for Microsoft Windows, macOS, and mobile, can also create, edit, convert, digitally sign, encrypt, export and publish PDF files. Acrobat.com complements the family with a variety of enterprise content management and file hosting services. Purpose The main function of Adobe Acrobat is creating, viewing, and editing PDF documents. It can import popular document and image formats and save them as PDF. It is also possible ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer-generated Imagery
Computer-generated imagery (CGI) is a specific-technology or application of computer graphics for creating or improving images in Digital art, art, Publishing, printed media, Training simulation, simulators, videos and video games. These images are either static (i.e. still images) or dynamic (i.e. moving images). CGI both refers to 2D computer graphics and (more frequently) 3D computer graphics with the purpose of designing characters, virtual worlds, or scenes and Visual effects, special effects (in films, television programs, commercials, etc.). The application of CGI for creating/improving animations is called ''computer animation'', or ''CGI animation''. History The first feature film to use CGI as well as the composition of live-action film with CGI was ''Vertigo (film), Vertigo'', which used abstract computer graphics by John Whitney (animator), John Whitney in the opening credits of the film. The first feature film to make use of CGI with live action in the storyline of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic Park (film)
''Jurassic Park'' is a 1993 American science fiction action film directed by Steven Spielberg and written by Michael Crichton and David Koepp, based on the former's Jurassic Park (novel), 1990 novel of the same name. Starring Sam Neill, Laura Dern, Jeff Goldblum, and Richard Attenborough, the film is set on the fictional island of Isla Nublar near Costa Rica, where wealthy businessman John Hammond (Jurassic Park), John Hammond (Attenborough), a mathematician, and a team of genetic scientists have created a Animal theme park, wildlife park of De-extinction, de-extinct dinosaurs. When industrial sabotage leads to a catastrophic shutdown of the park's power facilities and security precautions, a small group of visitors struggle to survive and escape the now perilous island. Before Crichton's novel was published, four studios put in bids for its film rights. With the backing of Universal Pictures, Spielberg acquired the rights for $1.5 million. Crichton was hired for an additi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eric Bina
Eric J. Bina (born October 1964) is an American software programmer who is the co-creator of Mosaic and the co-founder of Netscape. In 1993, Bina along with Marc Andreessen authored the first version of Mosaic while working as a programmer at National Center for Supercomputing Applications (NCSA) at the University of Illinois at Urbana-Champaign. Bina attended the University of Illinois at Urbana-Champaign, graduating from there with a Bachelor of Science degree in Computer Science in 1986 and a master's degree in 1988. He joined NCSA in 1991 as a programmer. There, Bina and Andreessen started working on Mosaic in December 1992 and had a working version by March 1993. Mosaic was posted to the Internet and is famed as the first killer application that popularized the Internet. He is one of the five inaugural inductees to the World Wide Web Hall of Fame announced at the first international conference on the World Wide Web First International Conference on the World-Wide Web (a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marc Andreessen
Marc Lowell Andreessen ( ; born July 9, 1971) is an American businessman and former software engineer. He is the co-author of Mosaic, the first widely used web browser with a graphical user interface; co-founder of Netscape; and co-founder and general partner of Silicon Valley venture capital firm Andreessen Horowitz. He co-founded and later sold the software company Opsware to Hewlett-Packard; he also co-founded Ning, a company that provides a platform for social networking websites. He is an inductee in the World Wide Web Hall of Fame. Andreessen's net worth is estimated at $1.9 billion as of January 2025. Early life and education Andreessen was born in Cedar Falls, Iowa, and raised in New Lisbon, Wisconsin.Simone Payment, ''Marc Andreessen and Jim Clark: The Founders of Netscape'', The Rosen Publishing Group, 2006, p. 15. . He is the son of Patricia and Lowell Andreessen, who worked for a seed company. In December 1993, he received his bachelor's degree in computer sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Web Browser
A web browser, often shortened to browser, is an application for accessing websites. When a user requests a web page from a particular website, the browser retrieves its files from a web server and then displays the page on the user's screen. Browsers can also display content stored locally on the user's device. Browsers are used on a range of devices, including desktops, laptops, tablets, smartphones, smartwatches and consoles. As of 2024, the most used browsers worldwide are Google Chrome (~66% market share), Safari (~16%), Edge (~6%), Firefox (~3%), Samsung Internet (~2%), and Opera (~2%). As of 2023, an estimated 5.4 billion people had used a browser. Function The purpose of a web browser is to fetch content and display it on the user's device. This process begins when the user inputs a Uniform Resource Locator (URL), such as ''https://en.wikipedia.org/'', into the browser's address bar. Virtually all URLs on the Web start with either ''http:'' or ''h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mosaic (web Browser)
NCSA Mosaic is a discontinued web browser. It was instrumental in popularizing the World Wide Web and the general Internet during the 1990s by integrating multimedia such as text and graphics. Although not the first web browser (preceded by WorldWideWeb, Erwise, and ViolaWWW), it was the first browser to display images inline with text instead of a separate window. It supported various Internet protocols such as HTTP, FTP, NNTP, and Gopher. Its interface, reliability, personal computer support, and simple installation contributed to Mosaic's initial popularity. Mosaic was developed at the National Center for Supercomputing Applications (NCSA) at the University of Illinois at Urbana–Champaign beginning in late 1992, released in January 1993, with official development and support until January 1997. Mosaic lost market share to Netscape Navigator in late 1994, and had only a tiny fraction of users left by 1997, when the project was discontinued. Microsoft licensed one of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
