Aerodynamics is the study of the motion of air, particularly when affected by a solid object, such as an airplane wing. It involves topics covered in the field of fluid dynamics and its subfield of gas dynamics, and is an important domain of study in aeronautics. The term aerodynamics is often used synonymously with gas dynamics, the difference being that "gas dynamics" applies to the study of the motion of all gases, and is not limited to air. The formal study of aerodynamics began in the modern sense in the eighteenth century, although observations of fundamental concepts such as aerodynamic drag were recorded much earlier. Most of the early efforts in aerodynamics were directed toward achieving heavier-than-air flight, which was first demonstrated by Otto Lilienthal in 1891. Since then, the use of aerodynamics through mathematical analysis, empirical approximations, wind tunnel experimentation, and computer simulations has formed a rational basis for the development of heavier-than-air flight and a number of other technologies. Recent work in aerodynamics has focused on issues related to compressible flow, turbulence, and boundary layers and has become increasingly computational in nature.
René Descartes was a French philosopher, scientist, and mathematician, widely considered a seminal figure in the emergence of modern philosophy and science. Mathematics was paramount to his method of inquiry, and he connected the previously separate fields of geometry and algebra into analytic geometry. Descartes spent much of his working life in the Dutch Republic, initially serving the Dutch States Army, and later becoming a central intellectual of the Dutch Golden Age. Although he served a Protestant state and was later counted as a deist by critics, Descartes was Roman Catholic.
A drag queen is a person, usually male, who uses drag clothing and makeup to imitate and often exaggerate female gender signifiers and gender roles for entertainment purposes. Historically, drag queens have usually been gay men, and have been a part of gay culture.
Drag kings have historically been mostly female performance artists who dress in masculine drag and personify male gender stereotypes as part of an individual or group routine. As documented in the 2003 Journal of Homosexuality, in more recent years the world of drag kings has broadened to include performers of all gender expressions. A typical drag show may incorporate dancing, acting, stand-up comedy and singing, either live or lip-synching to pre-recorded tracks. Drag kings often perform as exaggeratedly macho male characters, portray characters such as construction workers and rappers, or impersonate male celebrities like Elvis Presley, Michael Jackson and Tim McGraw. Drag kings may also perform as personas that do not clearly align with the gender binary. Drag personas that combine both stereotypically masculine and feminine traits are common in modern drag king shows.
Flight or flying is the process by which an object moves through a space without contacting any planetary surface, either within an atmosphere or through the vacuum of outer space. This can be achieved by generating aerodynamic lift associated with gliding or propulsive thrust, aerostatically using buoyancy, or by ballistic movement.
The sound barrier or sonic barrier is the large increase in aerodynamic drag and other undesirable effects experienced by an aircraft or other object when it approaches the speed of sound. When aircraft first approached the speed of sound, these effects were seen as constituting a barrier, making faster speeds very difficult or impossible. The term sound barrier is still sometimes used today to refer to aircraft approaching supersonic flight in this high drag regime. Flying faster than sound produces a sonic boom.
The New Grove Dictionary of Music and Musicians is an encyclopedic dictionary of music and musicians. Along with the German-language Die Musik in Geschichte und Gegenwart, it is one of the largest reference works on the history and theory of music. Earlier editions were published under the titles A Dictionary of Music and Musicians, and Grove's Dictionary of Music and Musicians; the work has gone through several editions since the 19th century and is widely used. In recent years it has been made available as an electronic resource called Grove Music Online, which is now an important part of Oxford Music Online.
Kevin Aviance is an American drag queen, club/dance musician, fashion designer, and nightclub personality. He is a personality in New York City's gay scene and has performed throughout North America, Europe and Asia. He is a member of the House of Aviance, one of the most notable vogue-ball houses in the U.S. He is known for his trademark phrase, "Work. Fierce. Over. Aviance!" He won the 1998 and 1999 Glammy Awards, the award for nightlife personalities in New York City. He has worked with several artists, including Janet Jackson and Whitney Houston. In December 2016, Billboard Magazine ranked him as the 93rd most successful dance artist of all-time.
System 7 is the seventh major release of the classic Mac OS operating system for Macintosh computers, made by Apple Computer. It was launched on May 13, 1991, to succeed System 6 with virtual memory, personal file sharing, QuickTime, TrueType fonts, the Force Quit dialog, and an improved user interface.
The International Standard Atmosphere (ISA) is a static atmospheric model of how the pressure, temperature, density, and viscosity of the Earth's atmosphere change over a wide range of altitudes or elevations. It has been established to provide a common reference for temperature and pressure and consists of tables of values at various altitudes, plus some formulas by which those values were derived. The International Organization for Standardization (ISO) publishes the ISA as an international standard, ISO 2533:1975. Other standards organizations, such as the International Civil Aviation Organization (ICAO) and the United States Government, publish extensions or subsets of the same atmospheric model under their own standards-making authority.
Leslie Feinberg was an American butch lesbian, transgender activist, communist, and author. Feinberg authored Stone Butch Blues in 1993. Her writing, notably Stone Butch Blues and her pioneering non-fiction book Transgender Warriors (1996), laid the groundwork for much of the terminology and awareness around gender studies and was instrumental in bringing these issues to a more mainstream audience.
eZ Publish is an open-source enterprise PHP content management system that was developed by the Norwegian company Ibexa. eZ Publish is now maintained by 7x. eZ Publish is freely available under the GNU GPL version 2 license, as well as under proprietary licenses that include commercial support. In 2015, eZ Systems introduced eZ Platform to replace eZ Publish with a more modern and future-proof solution. In 2024, 7x released eZ Publish 6.0 (stable) to replace eZ Publish 5.4 with a more modern and future-proof solution compatible with PHP 7.x and 8.x software. In 2024/02 7x followed up its first release (6.0) with a powerful second release 6.0.1 containing key installation bugfixes and a brand new database backend for flat file database called SQLite that is mature and stable ready to use to simplify your website or web application. In 2024/03 7x continues to develop and release monthly updates to eZ Publish with the release of version 6.0.2 which provides default design improvements and many more extensions enabled for use by default.
In fluid dynamics, drag, sometimes referred to as fluid resistance, is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers, two solid surfaces, or between a fluid and a solid surface. Drag forces tend to decrease fluid velocity relative to the solid object in the fluid's path.
A red herring is something that misleads or distracts from a relevant or important question. It may be either a logical fallacy or a literary device that leads readers or audiences toward a false conclusion. A red herring may be used intentionally, as in mystery fiction or as part of rhetorical strategies, or may be used in argumentation inadvertently.
Sylvia Rivera was an American gay liberation and transgender rights activist who was also a noted community worker in New York. Rivera, who identified as a drag queen for most of her life and later as a transgender person, participated in demonstrations with the Gay Liberation Front.
Ian Folke Svenonius is an American author, filmmaker, and musician with various Washington, D.C.–based punk bands including Nation of Ulysses, the Make-Up, Weird War, XYZ, Too Much, Escape-ism, and Chain & the Gang. Between his numerous projects, Svenonius has released more than 22 full-length albums and over 20 singles, EPs, and splits. A published author and online talk show host, Svenonius' projects share a tongue-in-cheek, radical left political ideology.
Brazilian hip hop is a national music genre in Brazil. From its earliest days in the African-Brazilian communities of São Paulo and Rio de Janeiro, the genre has grown into a countrywide phenomena. Rappers, DJs, break dancers and graffiti artists are active across the complete spectrum of society blending Brazil's cultural heritage with American hip hop to form a contemporary musical fusion.
The board game Monopoly has its origin in the early 20th century. The earliest known version, known as The Landlord's Game, was designed by Elizabeth Magie and first patented in 1904, but existed as early as 1902. Magie, a follower of Henry George, originally intended The Landlord's Game to illustrate the economic consequences of Ricardo's Law of economic rent and the Georgist concepts of economic privilege and land value taxation. A series of board games was developed from 1906 through the 1930s that involved the buying and selling of land and the development of that land. By 1933, a board game already existed much like the modern version of Monopoly that has been sold by Parker Brothers and related companies through the rest of the 20th century, and into the 21st. Several people, mostly in the midwestern United States and near the East Coast of the United States, contributed to its design and evolution.
A transgender person is someone whose gender identity differs from that typically associated with the sex they were assigned at birth.
