Drag (physics)

In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) refers to forces acting opposite to the relative motion of any object moving with respect to a surrounding fluid. This can exist between two fluid layers (or surfaces) or a fluid and a solid surface. Unlike other resistive forces, such as dry friction, which are nearly independent of velocity, drag forces depend on velocity. Drag force is proportional to the velocity for a laminar flow and the squared velocity for a turbulent flow. Even though the ultimate cause of a drag is viscous friction, the turbulent drag is independent of viscosity.

Drag forces always decrease fluid velocity relative to the solid object in the fluid's path.

Examples of drag

Examples of drag include the component of the net aerodynamic or hydrodynamic force acting opposite to the direction of movement of the solid object relative to Earth as for cars, aircraft and boat hulls; or acting in the same geographical direction of motion as the solid, as for sails attached to a down wind sail boat, or in intermediate directions on a sail depending on points of sail. In the case of viscous drag of fluid in a pipe, drag force on the immobile pipe decreases fluid velocity relative to the pipe.

Drag (Austin, Texas)

The Drag is a nickname for a portion of Guadalupe Street that runs along the western edge of the University of Texas campus in Austin, Texas.

The Drag began as a strip of shops which provided vital resources to UT students. Bookstores, restaurants, and clothing stores fulfilled student needs. The proximity to campus, particularly the Main Building and the Union Building, added to the popularity of the street. At the start of each semester The Drag fills with students purchasing textbooks and school supplies.

Past and present buildings on the Drag include the Harry Ransom Humanities Research Center, Raul's, Captain Quackenbush's Intergalactic Espresso and Dessert Company, Record Exchange (later renamed CD Exchange at the NW corner of 21st Street), Hastings Music and Video (directly across from the West Mall and Student Union), Bevo's Bookstore, The Gap (at the SW corner of 24th Street), Al's Formalwear (at 29 1/2 Street), Tower Records, The Bazaar, Texadelphia, Dobie Mall, Goodall Wooten private dormitory, and the University Baptist Church. Also, the Church of Scientology of Texas building is on The Drag.

Witch house (music genre)

Witch house (also known as drag or haunted house) is an occult-themed dark electronic music genre and visual aesthetic that emerged in the early 2000s. The music is heavily influenced by chopped and screwed hip-hop soundscapes, industrial and noise experimentation, and features use of synthesizers, drum machines, obscure samples, droning repetition and heavily altered, ethereal, indiscernible vocals.

The witch house visual aesthetic includes occult, witchcraft, shamanism and horror-inspired artworks, collages and photographs as well as significant use of typographic elements such as Unicode symbols. Many works by witch house visual artists incorporate themes from horror films such as The Blair Witch Project, the television series Twin Peaks, and mainstream pop culture celebrities. Common typographic elements in artist and track names include triangles, crosses, and other Unicode symbols, which are seen by some as a method of keeping the scene underground and harder to search for on the Internet as well as references to the television series Twin Peaks and Charmed.

Drag (film)

Drag is a 1929 American Pre-Code drama film directed by Frank Lloyd and starring Richard Barthelmess.

Cast

Awards and honors

Frank Lloyd was nominated at the 2nd Academy Awards for Academy Award for Best Director along with the film Weary River.

Preservation status

The film was long thought to be a lost film but was later rediscovered. The film originally had two versions, a sound version and a silent version.

See also

References

External links

Airó

Airó is a Portuguese parish, located in the municipality of Barcelos. The population in 2011 was 913, in an area of 3.02 km².

References

Air (classical element)

Air (also sometimes called Wind) is often seen as a universal power or pure substance. Its fundamental importance to life can be seen in words such as aspire, inspire, perspire and spirit, all derived from the Latin spirare.

Greek and Roman tradition

Air is one of the four classical elements in ancient Greek philosophy and science. According to Plato, it is associated with the octahedron; air is considered to be both hot and wet. The ancient Greeks used two words for air: aer meant the dim lower atmosphere, and aether meant the bright upper atmosphere above the clouds.Plato, for instance writes that "So it is with air: there is the brightest variety which we call aether, the muddiest which we call mist and darkness, and other kinds for which we have no name...." Among the early Greek Pre-Socratic philosophers, Anaximenes (mid-6th century BCE) named air as the arche. A similar belief was attributed by some ancient sources to Diogenes Apolloniates (late 5th century BCE), who also linked air with intelligence and soul (psyche), but other sources claim that his arche was a substance between air and fire.Aristophanes parodied such teachings in his play The Clouds by putting a prayer to air in the mouth of Socrates.

Air (Agua de Annique album)

Air is the debut album of the band Agua de Annique formed by the former The Gathering vocalist Anneke van Giersbergen. The album is a pop/rock oriented album and was released in 2007. Anneke van Giersbergen also plays piano on the album.

Track listing

All tracks by Anneke van Giersbergen except where noted

There is an animated video of the song "Day After Yesterday" which can be viewed on their official site. There is also a video for the cover song "Come Wander With Me," which was released as a download-single in 2008.

Personnel

External links