Convert inch mercury (32°F) to attopascal
Please provide values below to convert inch mercury (32°F) [inHg] to attopascal [aPa], or Convert attopascal to inch mercury (32°F).
How to Convert Inch Mercury (32°f) to Attopascal
1 inHg = 3.38638864e+21 aPa
Example: convert 15 inHg to aPa:
15 inHg = 15 × 3.38638864e+21 aPa = 5.07958296e+22 aPa
Inch Mercury (32°f) to Attopascal Conversion Table
| inch mercury (32°F) | attopascal |
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Inch Mercury (32°f)
Inch of mercury at 32°F (inHg) is a unit of pressure measurement representing the height of a mercury column in inches, used primarily in meteorology and aviation.
History/Origin
The inch of mercury originated from barometric pressure measurements using a mercury barometer, with its use dating back to the 18th century. It became a standard unit in weather reporting and altitude measurement.
Current Use
Today, inHg is primarily used in meteorology to report atmospheric pressure, especially in the United States, and in aviation for altitude and pressure readings.
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.