Gangnam Style (music video)

The music video of Gangnam Style by recording artist Psy, was directed by Cho Soo-hyun. The music video was filmed in Seoul for 48 straight hours. The video was premiered on July 15, 2012 and was later made available to download digitally on October 19. In the music video Psy "pokes fun at the style of Seoul's Gangnam-gu, a flashy district with high rents, high expectations and a focus on the high-status lifestyle". In December 2012, the music video hit 1 billion views in the video-sharing website YouTube (becoming the most viewed video of all time) and in June 2014 the video gained 2 billion views. As of January 2016, the video has over 2.51 billion views on YouTube, well exceeding the previous limit of a 32-bit view count of 2,147,483,647 which had to be updated to a 64-bit view count in December 2014 solely due to this video's popularity.

Production

The music video is directed by Cho Soo-hyun, who also directed the music video for Psy's follow-up single "Gentleman" and the music video for "This Love" by Shinhwa. It shows Psy performing a comical horse-riding dance and appearing in unexpected locations around the Gangnam District, such as an outdoor yoga session and a hot tub. He wears several distinctive suits and black sunglasses with a mindset of "dress classy and dance cheesy". It features a "skewering [of] the Gangnam image" by the "non-Gangnam Psy"; this parody would be recognizable to viewers familiar with Korean culture. Although there are more than ten different locations featured, only two of the scenes are actually filmed in the Gangnam district. The sauna scene, elevator scene and bathroom scene were filmed elsewhere in the greater Seoul region, and some shots were filmed in World Trade Center Seoul and the Songdo International Business District, which includes Songdo Central Park and International Business District Station. The video was shot over 48 hours in July 2012.

Cho

Cho may refer to:

Surnames

Given name

Aldehyde

An aldehyde /ˈældᵻhaɪd/ or alkanal is an organic compound containing a formyl group. The formyl group is a functional group, with the structure R-CHO, consisting of a carbonyl center (a carbon double bonded to oxygen) bonded to hydrogen and an R group, which is any generic alkyl or side chain. The group without R is called the aldehyde group or formyl group. Aldehydes differ from ketones in that the carbonyl is placed at the end of a carbon skeleton rather than between two carbon atoms. Aldehydes are common in organic chemistry. Many fragrances are aldehydes.

Structure and bonding

Aldehydes feature an sp²-hybridized, planar carbon center that is connected by a double bond to oxygen and a single bond to hydrogen. The C-H bond is not acidic. Because of resonance stabilization of the conjugate base, an α-hydrogen in an aldehyde (not shown in the picture above) is far more acidic, with a pKa near 17, than a C-H bond in a typical alkane (pKa about 50). This acidification is attributed to (i) the electron-withdrawing quality of the formyl center and (ii) the fact that the conjugate base, an enolate anion, delocalizes its negative charge. Related to (i), the aldehyde group is somewhat polar.

Cubohemioctahedron

In geometry, the cubohemioctahedron is a nonconvex uniform polyhedron, indexed as U₁₅. Its vertex figure is a crossed quadrilateral.

It is given Wythoff symbol 4/3 4 | 3, although that is a double-covering of this figure.

A nonconvex polyhedron has intersecting faces which do not represent new edges or faces. In the picture vertices are marked by golden spheres, and edges by silver cylinders.

It is a hemipolyhedron with 4 hexagonal faces passing through the model center. The hexagons intersect each other and so only triangle portions of each are visible.

Related polyhedra

It shares the vertex arrangement and edge arrangement with the cuboctahedron (having the square faces in common), and with the octahemioctahedron (having the hexagonal faces in common).

Tetrahexagonal tiling

The cubohemioctahedron can be seen as a net on the hyperbolic tetrahexagonal tiling with vertex figure 4.6.4.6.

Hexahemioctacron

The hexahemioctacron is the dual of the cubohemioctahedron, and is one of nine dual hemipolyhedra. It appears visually indistinct from the octahemioctacron.