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Miscellaneous Constants

Name Symbol Value

Absolute Zero

-273.15 ° C

Air, Critical Temperature of

-190 °C
183 K

Air, Density of

0.7734 m3 kg-1
1.2929 kg m-3

Air, Viscosity of (20°C)

η0

1.8 × 10-5 N s m-2

Atmospheric Pressure

1.01325 × 105 N m-2
1.01325 bar
14.7 lbf in-2

Carbon-14 Half-life of

T

5570 years

Conductance, Quantized Hall

e2/h

3.87404614 × 10-5 S

Constant, Fermi Coupling

GF/(ħc)3

1.16639(1) × 10-5 GeV-2

Constant, Gas

R

8.314 J K-1 mol-1

Constant, Verdets (Light at 589nm in water)

0.000477 rad A-1

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