|
SI and non-SI Permiteed Units |
| Physical quantity | Units | Relation with SI units
| Name
| Symbol
| Length
| millimetre
сcentimetre
decimetre | mm
cm
dm
| 1mm = 10-3m
1cm = 10-2m
1dm = 10-1m
| Astronomical distances
| lightyear | | 1 lightyear = 9460.55Tm
= 9.46055×1015m | Wave lengths -
atomic distances
| angstrom
| Å
| 1Å = 10-10m
| Area
| are
decare
hectare | a
da
ha
| 1a = 10²m
1da = 10³m
1ha = 104m
| Effective section
(nuclear physics)
| barn
| b
| 1b = 10-28m²
| | Volume (timber) | stero
| st
| 1st = 1m³
| Mass
| ton
Quintal
Hectogramme
Gramme
Atomic mass unit
| t
q
hg
g
u
| 1t = 10³kg = 1Mg
1q = 10²kg
1hg = 10-1kg
1g = 10-3kg
1u = 1.6605655×10-27kg
| Mass of precious stones
| metric carat
| carat
| 1carat = 2×10-4kg
| Mass per unit length
of fibres and yarns
| tex
| tex
| 1tex = 10-6 kg×m-1
| | Pressure and tension | bar
normal atmosphere
| bar
atm
| 1bar = 10²kN/m² = 105Pa
1atm = 101325 Pa
| Arterial tension
(blood pressure)
| millimetres of mercury
| mm Hg
| 1mm Hg = 133.322 Pa
| Force
| dyne
| dyn
| 1dyn = 10-5N
| Energy
| erg
electronvolt
| erg
eV
| 1erg = 10-7J
1eV = 1.6021×10-19J
| Kinematic viscosity
| stoke
| St
| 1St = 10-4m²×s-1
| Dynamic viscosity
| poise
| p
| 1p = 10-1Pa×s | | Acceleration of gravity | gal
| Gal
| 1Gal = 10-2m×s-2 |
|
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