A bar was a unit of pressure, nearly identical to the atmosphere. One bar was equal to 100 kilopascals.

Starfleet environmental suits measured oxygen pressure in millibars. (VOY: "Day of Honor")

This unit is used by meteorologists who find it easier to refer to atmospheric pressures without using decimals.

Comparative list of pressures Edit

1,000 millibars = 1 bar
  • The computer warned Tom Paris that his space suit was leaking, informing him that the oxygen level was dropping from 114 millibars to 93 millibars before B'Elanna Torres connected to his suit to share her oxygen. (VOY: "Day of Honor")
  • While Paris and Torres shared their oxygen, the level dropped from 104 millibars, to 87 millibars, and finally to 71 millibars, before they were rescued by USS Voyager. (VOY: "Day of Honor")
1,000 bars = 1 kilobar

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