Atmospheric Pressure

The Standard Atmosphere is a unit of pressure.

• It is a kind of Metric used in Planetology.
• It is a measure of the atmosphere of a world.
• Atmospheric pressure may also be measured in bars and millibars.

Description (Specifications)

The descriptions of Atmospheres are given in the relative terms of Standard Atmospheres rather, than the absolute units, as a method of making comparisons to the human physiological norm easier.

One Atmosphere is defined as being precisely equal to 101.325 kPa. The pascal is the unit of pressure used to quantify internal pressure, stress, and tensile strength. It is defined as one newton per square meter.

• The Atmosphere is based on the mean surface atmospheric pressure of Terra.
• The standard abbreviation is atm.

Within Charted Space, the atmospheres of worlds are rated according to a standard scale, based on their mean surface pressure.

• Vacuum Pressure Atmosphere (less than 0.001 atm)
• Trace Pressure Atmosphere (less than 0.1 atm)
• Very Thin Pressure Atmosphere (between 0.1 and 0.42 atm)
• Thin Pressure Atmosphere (between 0.42 and 0.7 atm)
• Standard Pressure Atmosphere (between 0.7 and 1.5 atm)
• Dense Pressure Atmosphere (between 1.5 and 2.5 atm)
• Very Dense Pressure Atmosphere (above 2.5 atm)

History & Background (Dossier)

The Atmosphere was first defined as a unit of pressure on Terra prior to the foundation of the Terran Confederation. It is defined as the mean surface pressure of Terra's atmosphere. The true atmospheric pressure of a world can vary, even on Terra: the local atmospheric pressure can vary from the standard by as much as 15%, affected by weather, temperature, tides, and altitude. Technologists found the Atmosphere useful as the concept of the Technology Level and standardized ideas about sophont society development began to take form.

References & Contributors (Sources)

This page uses content from Wikipedia. The original article was at Atmospheric_pressure. The list of authors can be seen in the page history. The text of Wikipedia is available under the Commons Attribution-ShareAlike 3.0 Unported License.

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Far Future Enterprises or by permission of the author. The page history lists all of the contributions.

• Traveller Wiki Editorial Team
• Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science