Conversion Tables And Abbreviations Chart Page 2
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425.1 Technical Units
Tab. 151: SI derived units whose names and symbols include SI derived units
with special names and symbols
Derived quantity
Name
Symbol
Dynamic viscosity
pascal second
Pa·s
Moment of force
newton meter
N·m
Angular velocity
radian per second
rad/s
rad/s 2
Angular acceleration
radian per second squared
W/m 2
Heat flux density, irradiance
watt per square meter
Thermal conductivity
watt per meter kelvin
W/(m·K)
Tab. 152: Units outside the SI that are
accepted for use with the SI
Name
Symbol
Value in SI units
Minute (time)
min
1 min = 60 s
Hour
h
1 h = 60 min = 3,600 s
404
Day
d
1 d = 24 h = 86,400 s
1 L = 1 dm 3 = 10 -3 m 3
Liter
L
Metric ton a
1 t = 10 3 kg
t
1 ha = 1 hm 2 = 10 4 m 2
hectare
ha
a In many countries, this unit is called "tonne".
Tab. 153: SI prefixes
Multiples
Submultiples
Factor
Name
Symbol
Factor
Name
Symbol
10 24
10 -1
yotta
Y
deci
d
10 21
10 -2
zetta
Z
centi
c
10 18
10 -3
exa
E
milli
m
10 15
10 -6
peta
P
micro
10 12
10 -9
tera
T
nano
n
10 9
10 -12
giga
G
pico
p
10 6
10 -15
mega
M
femto
f
10 3
10 -18
kilo
k
atto
a
10 2
10 -21
hecto
h
zepto
z
10 1
10 -24
deka
da
yocto
y
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