Pressure

Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure) is the pressure relative to the ambient pressure.

Various units are used to express pressure. Some of these derive from a unit of force divided by a unit of area; the SI unit of pressure, the pascal (Pa), for example, is one newton per square metre; similarly, the pound-force per square inch (psi) is the traditional unit of pressure in the imperial and US customary systems. Pressure may also be expressed in terms of standard atmospheric pressure; the atmosphere (atm) is equal to this pressure and the torr is defined as ¹⁄₇₆₀ of this. Manometric units such as the centimetre of water, millimetre of mercury and inch of mercury are used to express pressures in terms of the height of column of a particular fluid in a manometer.

Definition

Pressure is the amount of force acting per unit area. The symbol for pressure is p or P. The IUPAC recommendation for pressure is a lower-case p. However, upper-case P is widely used. The usage of P vs p depends on the field in which one is working, on the nearby presence of other symbols for quantities such as power and momentum, and on writing style.

Pressure (disambiguation)

Pressure is an effect which occurs when a force is applied on a surface.

Pressure also may refer to:

Music

Entertainment

Other uses

See also

Pressure (Sunscreem song)

"Pressure" is a 1991 dance single recorded by the British techno group Sunscreem, and written and produced by band members Paul Carnell and lead singer Lucia Holm from the act's 1993 set *O₃. "Pressure" was the group's first single release in the United Kingdom, where it peaked at number 60 on the country's pop chart, but it became a major club hit in the United States in wake of the success of "Love U More", where it was released as "Pressure US" with a new remixed version and went to number one on the dance chart for one week in June 1993, their second of three number ones. The re-released version reentered the UK charts afterwards, peaking at number 19 in 1993.

Track listing

See also

DND

DND, D&D, or Dnd can refer to:

Entertainment

Organisations

Science & Technology

Other

See also

Department of National Defence (Canada)

The Department of National Defence (French: Ministère de la Défense nationale), commonly abbreviated as DND, is a Canadian government department responsible for defending Canada's interests and values at home and abroad. National Defence is the largest department of the Government of Canada in terms of budget as well as staff. It also is the department with the largest number of buildings (6,806 in 2015). The Department is headed by the Deputy Minister of National Defence, who is the Department’s senior civil servant, and reports directly to the Minister of National Defence.

The Department of National Defence exists to aid the minister in carrying out his responsibilities within the Defence Portfolio, and provides a civilian support system for the Canadian Armed Forces. Under the National Defence Act, the Canadian Armed Forces is a completely separate and distinct organisation from, and is not part of, the Department of National Defence.

The Department of National Defence is currently headed by Deputy Minister John Forster.