Work (electrical)

Electrical work is the work done on a charged particle by an electric field. The equation for 'electrical' work is equivalent to that of 'mechanical' work:

where

The electrical work per unit of charge, when moving a negligible test charge between two points, is defined as the voltage between those points.

Overview

Qualitative overview

Particles that are free to move, if positively charged, normally tend towards regions of lower voltage (net negative charge), while if negatively charged they tend to shift towards regions of higher voltage (net positive charge).

However, any movement of a positive charge into a region of higher voltage requires external work to be done against the field of the electric force, work equal to that electric field would do in moving that positive charge the same distance in the opposite direction. Similarly, it requires positive external work to transfer a negatively charged particle from a region of higher voltage to a region of lower voltage.

The electric force is a conservative force: work done by a static electric field is independent of the path taken by the charge. There is no change in the voltage (electric potential) around any closed path; when returning to the starting point in a closed path, the net of the external work done is zero. The same holds for electric fields.

Work of art

A work of art, artwork, art piece, piece of art or art object is an aesthetic physical item or artistic creation. Apart from "work of art", which may be used of any work regarded as art in its widest sense, including works from literature and music, these terms apply principally to tangible, portable forms of visual art:

Used more broadly, the term is less commonly applied to:

Work (The 2 Bears song)

"Work" is a single by London-based musical duo The 2 Bears. It was released on 1 January 2012 as a Digital download in the United Kingdom. The song features on their debut studio album Be Strong.

Music video

A music video to accompany the release of "Work" and was uploaded to YouTube on 12 January 2012 at a total length of three minutes and fourteen seconds.

Track listing

Chart performance

Release history

References

Pure

Pure may refer to:

Computing

Companies and products

Literature

Pure (The Lightning Seeds album)

Pure is a compilation album by pop band The Lightning Seeds, released in 1996 and reaching #27 in the UK Albums Chart.

The first of what would turn out to be five compilations Ian Broudie released from 1996 to 2006, Pure, The Lightning Seeds' first release by Virgin, is almost a reissue rather than a compilation, since it consists of all but three of the songs released by Epic on the first two albums, Cloudcuckooland from 1990 and Sense from 1992; the only songs missing are one song from the first album ("Control the Flame") and two from Sense: ("Where Flowers Fade" and "Marooned").

Track listing

All songs written and composed by Ian Broudie; except where indicated. 

Charts

Certifications

References

Pure (Hayley Westenra album)

Pure is the first internationally published album by Christchurch, New Zealand soprano Hayley Westenra. Her previous albums were released only in New Zealand and nearby Australia. This album also received professional consultation from the legendary Sir George Martin who helped to create its "unique appeal". In 2004, it was the highest selling New Zealand Album and so it privileged Hayley with an award from the New Zealand Music Awards of 2004. It was published by the Decca Music Group label in 2003. It was distributed in the United States by Universal Classics in 2004. During its first week of sales it sold 19,068 copies. As of 2007, Pure is the best selling classical album for the 21st century in the UK.

Pure gives a new freshness to well known classical repertoire, as well as exploring the world of pop and traditional Maori choral singing, including renditions of "Who Painted the Moon Black?", "Hine e Hine" (a song of the Māori, the natives of New Zealand), "In Trutina", from Orff's Carmina Burana, "Wuthering Heights" (a cover of the Kate Bush hit), and the perennial spiritual classic "Amazing Grace". Sir George Martin co-wrote the track "Beat of Your Heart" just for the album. Also on the album is "Pokarekare Ana", a New Zealand love song which has enduring popularity, and has become Hayley's signature song.