Convert millimeter water (4°C) to Standard atmosphere
Please provide values below to convert millimeter water (4°C) [mmH2O] to Standard atmosphere [atm], or Convert Standard atmosphere to millimeter water (4°C).
How to Convert Millimeter Water (4°c) to Standard Atmosphere
1 mmH2O = 9.67814458425857e-05 atm
Example: convert 15 mmH2O to atm:
15 mmH2O = 15 × 9.67814458425857e-05 atm = 0.00145172168763879 atm
Millimeter Water (4°c) to Standard Atmosphere Conversion Table
| millimeter water (4°C) | Standard atmosphere |
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Millimeter Water (4°c)
Millimeter water (4°C) is a unit of pressure measuring the height of a water column at 4 degrees Celsius that exerts a specific pressure.
History/Origin
The unit originated from the use of water columns to measure pressure, particularly in hydrology and medical applications, with standardization based on the density of water at 4°C.
Current Use
It is primarily used in medical and scientific contexts to measure low pressures, such as intracranial pressure, respiratory pressures, and in calibration of pressure sensors.
Standard Atmosphere
The standard atmosphere (atm) is a unit of pressure defined as 101,325 pascals, representing the average atmospheric pressure at sea level.
History/Origin
The standard atmosphere was established in the early 20th century to provide a consistent reference for pressure measurements, based on the average atmospheric pressure at sea level under standard conditions.
Current Use
The atm is commonly used in fields such as meteorology, aviation, and engineering to express pressure, especially in contexts involving gases and atmospheric conditions.