Current (fluid)

A current in a fluid is the magnitude and direction of flow within that fluid. An air current presents the same properties specifically for a gaseous medium.

Types of fluid currents include

Current

Current may refer to:

Ongoing events

Science and mathematics

Arts and entertainment

Other uses

See also

Current (album)

Current is the fifth album by funk-disco band Heatwave, released in 1982 on the Epic label. It was produced by Barry Blue.

Track listing

All songs written and composed by Rod Temperton, except where noted. 

Personnel

Charts

Singles

References

External links

Current (mathematics)

In mathematics, more particularly in functional analysis, differential topology, and geometric measure theory, a k-current in the sense of Georges de Rham is a functional on the space of compactly supported differential k-forms, on a smooth manifold M. Formally currents behave like Schwartz distributions on a space of differential forms. In a geometric setting, they can represent integration over a submanifold, generalizing the Dirac delta function, or more generally even directional derivatives of delta functions (multipoles) spread out along subsets of M.

Definition

Let denote the space of smooth m-forms with compact support on a smooth manifold . A current is a linear functional on which is continuous in the sense of distributions. Thus a linear functional

is an m-current if it is continuous in the following sense: If a sequence of smooth forms, all supported in the same compact set, is such that all derivatives of all their coefficients tend uniformly to 0 when tends to infinity, then tends to 0.

Water (Elitsa & Stoyan song)

"Water" (Bulgarian script: Вода) was the Bulgarian entry in the Eurovision Song Contest 2007, performed in Bulgarian by Elitsa Todorova & Stoyan Yankoulov. This was the first occasion on which the Bulgarian language was used on the Eurovision stage, previous Bulgarian entries being performed in English. Originally titled "Voda", the song had its title translated to English for the Contest.

The song is an up-tempo number with techno influences, as well as a jaw harp and traditional percussion. Todorova sings folk-inspired lyrics dealing with a young girl meeting a young boy riding a horse.

The performance in the semi-final featured the duo wearing what looked like armour, while they were wearing more mainstream clothes in the final. The performances were also notable for the high-energy percussion performances of both musicians.

As Bulgaria had not finished the previous Contest in the top ten, the song was performed in the semi-final. Here, it was performed first (preceding Israel's Teapacks with "Push The Button"). At the close of voting, it had received 146 points, placing 6th in a field of 28 and qualifying Bulgaria for its first final.

Water (2005 film)

Water (Hindi: वाटर), is a 2005 Indo-Canadian film written and directed by Deepa Mehta, with screenplay by Anurag Kashyap. It is set in 1938 and explores the lives of widows at an ashram in Varanasi, India. The film is also the third and final instalment of Mehta's Elements trilogy. It was preceded by Fire (1996) and Earth (1998). Author Bapsi Sidhwa wrote the 2006 novel based upon the film, Water: A Novel, published by Milkweed Press. Sidhwa's earlier novel, Cracking India was the basis for Earth, the second film in the trilogy. Water is a dark introspect into the tales of rural Indian widows in the 1940s and covers controversial subjects such as misogyny and ostracism. The film premiered at the 2005 Toronto International Film Festival, where it was honoured with the Opening Night Gala, and was released across Canada in November of that year. It was first released in India on 9 March 2007.

The film stars Seema Biswas, Lisa Ray, John Abraham, and Sarala Kariyawasam in pivotal roles and Kulbhushan Kharbanda, Waheeda Rehman, Raghuvir Yadav, and Vinay Pathak in supporting roles. Featured songs for the film were composed by A. R. Rahman, with lyrics by Sukhwinder Singh and Raqeeb Alam while the background score was composed by Mychael Danna. Cinematography is by Giles Nuttgens, who has worked with Deepa Mehta on several of her films.

Ice

Ice is water frozen into a solid state. Depending on the presence of impurities such as particles of soil or bubbles of air, it can appear transparent or a more or less opaque bluish-white color.

In the Solar System, ice is abundant and occurs naturally from as close to the Sun as Mercury to as far as the Oort cloud. Beyond the Solar System, it occurs as interstellar ice. It is abundant on Earth's surface – particularly in the polar regions and above the snow line – and, as a common form of precipitation and deposition, plays a key role in Earth's water cycle and climate. It falls as snowflakes and hail or occurs as frost, icicles or ice spikes.

Ice molecules can exhibit up to sixteen different phases (packing geometries) that depend on temperature and pressure. When water is cooled rapidly (quenching), up to three different types of amorphous ice can form depending on the history of its pressure and temperature. When cooled slowly correlated proton tunneling occurs below 20 K giving rise to macroscopic quantum phenomena. Virtually all the ice on Earth's surface and in its atmosphere is of a hexagonal crystalline structure denoted as ice Ih (spoken as "ice one h") with minute traces of cubic ice denoted as ice Ic. The most common phase transition to ice Ih occurs when liquid water is cooled below 0°C (273.15K, 32°F) at standard atmospheric pressure. It may also be deposited directly by water vapor, as happens in the formation of frost. The transition from ice to water is melting and from ice directly to water vapor is sublimation.