Common Vacuum Terminology1

  1. standard ambient condition:The temperature is 20℃, the relative humidity is 65%, and the atmospheric pressure is101325Pa=1013.25mbar=760Torr。PVD Coating Systems suppliers
  2. standard reference conditions for gases:The temperature is 0℃ and the pressure is101325Pa.
  3. p pressure:When a gas molecule passes through a hypothetical plane, the momentum change rate along the normal direction of the plane is divided by the plane area or the normal component of the force acting on the surface of the container wall by the surface area. Note: The term "pressure" applies only to the static pressure of a gas in a stationary state or in a steady flow.

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