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Converted to SI units, 1 darcy is equivalent to 9.869 233 × 10 −13 m 2 or 0.9869233 μm 2. [4] This conversion is usually approximated as 1 μm 2. This is the reciprocal of 1.013250—the conversion factor from atmospheres to bars. [1] Specifically in the hydrology domain, permeability of soil or rock may also be defined as the flux of water ...
Conversions between units in the metric system are defined by their prefixes ... ≡ 1 cm/s 2 = 10 −2 m/s 2: inch per minute per second: ipm/s ≡ 1 in/(min⋅s)
m 2: square metre: square meter cm2: cm 2: square centimetre: square centimeter km2: km 2: ... Conversion of the Mach unit of speed depends on the altitude at which ...
1.0 ft (0.30 m) ftin (feet/inches) ft m (foot m) hand: hand h 1.0 h (4 in; 10 cm) inch: in in Use of ′ and ″ symbols violates MOSNUM so is not provided. 1.0 in (25 mm) in cm; in mm; Maritime units: nautical mile: nmi nmi the international standard nautical mile 1.0 nmi (1.9 km; 1.2 mi) nautical mile: oldUKnmi (admiralty nmi) nmi 6080 ft
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.
conversion combination output units SI: square kilometre: km2 km 2: US spelling: square kilometer: 1.0 km 2 (0.39 sq mi) km2 sqmi; square metre: m2 m 2: US spelling: square meter: 1.0 m 2 (11 sq ft) m2 sqft; square centimetre: cm2 cm 2: US spelling: square centimeter: 1.0 cm 2 (0.16 sq in) cm2 sqin; square millimetre: mm2 mm 2: US spelling ...
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The cm corresponds in the permeability equations to the thickness of the material whose permeability is being evaluated, the cm 3 STP cm −2 s −1 to the flux of gas through the material, and the cmHg to the pressure drop across the material. That is, it measures the rate of fluid flow passing through an area of material with a thickness ...