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정의
정확히 101,325 Pa(101.325 kPa)로 정의된 기준 압력 단위로, 해수면에서의 근사적 평균 기압을 나타낸다.
설명
Standard atmosphere (atm) is used to define other pressure units: 1 atm = 760 mmHg = 14.696 psi = 1.01325 bar. A typical car tire is inflated to 2.2–2.5 atm gauge pressure (above atmospheric). Deep-sea submersibles must withstand more than 1,000 atm at 10 km depth. The standard atmosphere is also the upper boundary of ‘Standard Conditions’ in gas law calculations.
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