Convert centimeter water (4°C) to attopascal

Please provide values below to convert centimeter water (4°C) [cmH2O] to attopascal [aPa], or Convert attopascal to centimeter water (4°C).

How to Convert Centimeter Water (4°c) to Attopascal

1 cmH2O = 9.80638e+19 aPa

Example: convert 15 cmH2O to aPa:
15 cmH2O = 15 × 9.80638e+19 aPa = 1.470957e+21 aPa

Centimeter Water (4°c) to Attopascal Conversion Table

centimeter water (4°C)	attopascal

Centimeter Water (4°c)

Centimeter water (4°C), symbol cmH2O, is a unit of pressure representing the pressure exerted by a one-centimeter column of water at 4 degrees Celsius.

History/Origin

The centimeter water was developed as a practical unit of pressure measurement in medical and engineering contexts, especially for low-pressure measurements such as respiratory and fluid pressure, originating from the use of water columns in manometers.

Current Use

It is primarily used in medical settings to measure intracranial pressure, respiratory pressures, and other low-pressure applications where precise measurement of small pressure differences is required.

Attopascal

The attopascal (aPa) is a unit of pressure equal to 10^-18 pascals, representing an extremely small pressure measurement.

History/Origin

The attopascal was introduced as part of the SI prefixes to denote very small quantities of pressure, but it is rarely used in practical applications due to its minuscule magnitude.

Current Use

The attopascal is primarily used in scientific research and theoretical contexts where extremely small pressure differences are relevant, although it remains largely a conceptual unit.

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