24 relations: Atmospheric pressure, Bar (unit), Celsius, Centimetre of water, Chemistry, Dyne, General Conference on Weights and Measures, Inch of mercury, Inch of water, International Standard Atmosphere, International Union of Pure and Applied Chemistry, Kilogram-force, Kilogram-force per square centimetre, Millimeter of mercury, National Institute of Standards and Technology, Pascal (unit), Pounds per square inch, Pressure, Scuba diving, Square metre, Standard conditions for temperature and pressure, Technical atmosphere, Torr, Vienna Standard Mean Ocean Water.
Atmospheric pressure, sometimes also called barometric pressure, is the pressure within the atmosphere of Earth (or that of another planet).
The bar is a metric unit of pressure, but is not approved as part of the International System of Units (SI).
The Celsius scale, previously known as the centigrade scale, is a temperature scale used by the International System of Units (SI).
A centimetre of water (US spelling centimeter of water, abbreviated cm or cm H2O) is a less commonly used unit of pressure derived from pressure head calculations using metrology.
Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds.
The dyne (symbol dyn, from Greek δύναμις, dynamis, meaning power, force) is a derived unit of force specified in the centimetre–gram–second (CGS) system of units, a predecessor of the modern SI.
The General Conference on Weights and Measures (Conférence générale des poids et mesures – CGPM) is the supreme authority of the International Bureau of Weights and Measures (Bureau international des poids et mesures – BIPM), the inter-governmental organization established in 1875 under the terms of the Metre Convention (Convention du Mètre) through which Member States act together on matters related to measurement science and measurement standards.
Inch of mercury (inHg and ″Hg) is a unit of measurement for pressure.
Inches of water, inches of water gauge (iwg or in.w.g.), inches water column (inch wc or just wc), inAq, Aq, or inHO is a non-SI unit for pressure.
The International Standard Atmosphere (ISA) is an atmospheric model of how the pressure, temperature, density, and viscosity of the Earth's atmosphere change over a wide range of altitudes or elevations.
The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations that represents chemists in individual countries.
The kilogram-force (kgf or kgF), or kilopond (kp, from Latin pondus meaning weight), is a gravitational metric unit of force.
A kilogram-force per centimetre square (kgf/cm2), often just kilogram per square centimetre (kg/cm2), or kilopond per centimetre square is a deprecated unit of pressure using metric units.
A millimeter of mercury is a manometric unit of pressure, formerly defined as the extra pressure generated by a column of mercury one millimetre high and now defined as precisely pascals.
The National Institute of Standards and Technology (NIST) is one of the oldest physical science laboratories in the United States.
The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength.
The pound per square inch or, more accurately, pound-force per square inch (symbol: lbf/in2; abbreviation: psi) is a unit of pressure or of stress based on avoirdupois units.
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.
Scuba diving is a mode of underwater diving where the diver uses a self-contained underwater breathing apparatus (scuba) which is completely independent of surface supply, to breathe underwater.
The square metre (International spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area, with symbol m2 (Unicode character). It is the area of a square whose sides measure exactly one metre.
Standard conditions for temperature and pressure are standard sets of conditions for experimental measurements to be established to allow comparisons to be made between different sets of data.
The technical atmosphere (symbol: at) is a non-SI unit of pressure equal to one kilogram-force per square centimeter.
The torr (symbol: Torr) is a unit of pressure based on an absolute scale, now defined as exactly of a standard atmosphere (101.325 kPa).
Vienna Standard Mean Ocean Water (VSMOW) is a water standard defining the isotopic composition of fresh water.