|
Name |
Symbol |
Value |
|
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Absolute Entropy Constant |
S0/R |
-1.1517048(44) -1.1648678(44)
|
 |
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Absolute Zero |
|
-273.15 ° C
|
 |
 |
Acceleration of Free Fall on Earth |
g |
9.80665 m s-2 32.1740 ft s-2
|
 |
 |
Acre |
|
4046.85642240 m2
|
 |
 |
Air, Critical Temperature of |
|
-190 °C 183 K
|
 |
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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
|
|
 |
Alladi-Grinstead Constant |
|
0.809394020534
|
|
 |
Еngstrцm |
Е |
10-10 m
|
 |
 |
Annйe-lumiиre |
ly |
9.46052973 × 1015 m
|
 |
 |
Apйry's Constant |
ζ(3) |
1.202056903
|
 |
 |
Apothecaries' Ounce |
oz (apoth) oz (ap.) |
3.110347680 × 10-2 kg
|
 |
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Archimedes' Constant |
π |
3.1415926535897932384626433832795
|
 |
 |
Astronomical Unit |
AU |
1.4959787 × 1011 m
|
 |
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Atmospheric Pressure |
|
1.01325 × 105 N m-2 1.01325 bar 14.7 lbf in-2
|
 |
 |
Atomic Mass Unit |
amu mu u |
1.66053873(13) × 10-27 kg 931.494013(37) MeV 1.49241778(12) × 10-10 J
|
 |
 |
Avogadro Constant |
NA |
6.02214199(47) × 1023 mol-1
|
 |
 |
Avoirdupois Ounce |
oz avdp oz (av.) oz |
2.834952313 × 10-2 kg 0.0625 lb (av.) 16 drachms (av.)
|
 |