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Pressure Units definitions

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  • Pascal
    The SI unit for pressure, named after Blaise Pascal, representing force per unit area in newtons per square meter.
  • Atmosphere
    A non-SI unit of pressure commonly used in chemistry, equivalent to 760 mmHg or 101.325 kPa.
  • Millimeters of Mercury
    A non-SI unit of pressure, also known as mmHg, equivalent to 1/760 of an atmosphere.
  • Torr
    A unit of pressure equivalent to 1 mmHg, named after Evangelista Torricelli.
  • Kilopascal
    A unit of pressure equal to 1,000 pascals, often used in meteorology and engineering.
  • Bar
    A unit of pressure equal to 100,000 pascals, slightly less than an atmosphere.
  • Psi
    A unit of pressure, pounds per square inch, commonly used in the United States.
  • Force
    A vector quantity in newtons that causes an object to undergo a change in speed, direction, or shape.
  • Area
    The measure of the extent of a surface, expressed in square meters in the SI system.
  • Ideal Gas
    A theoretical gas composed of many randomly moving point particles that interact only through elastic collisions.
  • Non-Ideal Gas
    A real gas that does not follow the ideal gas law due to interactions between molecules or finite molecular volume.