Description Usage Arguments Details Value References See Also Examples
Calculates the Magnitude of the Air Buoyancy Correction (MABC). If no parameters are provided the function returns MABC for weighing water at standard conditions.
1 | MABC(rho = 0.997, rho_w = 8, rho_air = airDensity())
|
rho |
density of the sample in g~cm^{-3} |
rho_w |
density of the weigths in g~cm^{-3} |
rho_air |
density of the air in g~cm^{-3}.
If not provided, the value returned by the function |
Comparing masses (weighing) in air produces results that are influenced by the objects densities due to their buoyancy in air. This air buoyancy effects are usually small but must be taken in account when high accuracy is required. The effect can be corrected by using the densities of the object, the mass standard and the air filling the room where the measurement process takes place (Harris, 2019).
The uncertainty associated to MABC can be calculated by the function uncertMABC()
.
Numeric value of the Magnitude of the Air Buoyancy Correction factor.
Harris, G. (2019). Selected Laboratory and Measurement Practices and Procedures to Support Basic Mass Calibrations. SOP 2 - Recommended Standard Operating Procedure for Applying Air Buoyancy Corrections. National Institute of Standards and Technology (NIST). doi:10.6028/NIST.IR.6969-2019
uncertMABC()
, airDensity()
, uncertMABC()
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