Units of measure
| Description |
Unit of measure
|
Equivalencies
|
||
|
Symbol for formulas
|
Symbol
|
Name
|
||
| Length |
The
|
m
|
Metro
|
|
| Area |
In
|
M2
|
||
| Volume |
V
|
M3
|
1 m3 = 1000 dm3 1 dm3 = 1 l |
|
| Plane angle |
a, b, g
|
rad
|
radian
|
1° = p/180rad 1 ' = 1°/60 1 ' 1 ' = '/60 |
| Time |
t
|
s
|
According to
|
|
| Frequency |
f
|
Hz
|
Hertz
|
1 Hz = 1/s |
| Speed of rotation |
n
|
1/min
|
||
| Speed |
v
|
m/s
|
1 Km/h = 1/3.6 m/s | |
| Angular velocity |
w
|
rad/s
|
||
| Acceleration |
in
|
m/s2
|
||
| Angular acceleration |
in
|
rad/s2
|
||
| Massa |
m
|
Kg
|
kg
|
|
| Density |
r
|
Kg/m3
|
||
| Strength |
F
|
N
|
Newton
|
1N = 1 Kg * 1 m/s2 |
| 9.81 N = 1kp | ||||
| Pressure |
p
|
PA = N/m2
|
Pascal
|
104 * 9.81 N/m2 = 1kp/cm2 |
| Effort |
s
|
N/mm2
|
9.81 N/mm2 = 1kp/mm2 | |
| Job |
W
|
J = Nm
|
Joules
|
9.81 Nm = 1 kpm |
| Energy |
W
|
4187 J = 1 kcal | ||
| Heat replica watches |
Q
|
1 kWh = 3.6 x 106 J | ||
| Couple |
M
|
NM
|
9.81 Nm = 1 kpm 1 Nm = 0102 kpm |
|
| Power |
P
|
W = J/s = Nm/s
|
Watts
|
1 HP = 735.5 W fake breitling |
| Moment of inertia |
J
|
kg m2
|
9.81 kg m2 = 1 kpms2 Pd2 = 4 J |
|
| Dynamic viscosity |
h
|
PA * s
|
Poise
|
10-1 Pa * s = 1 P |
| Kinematic viscosity |
n
|
M2/s
|
Stokes
|
10-4 m2/s = 1 St |
| Current |
The
|
In
|
Ampere
|
1 A = 1 W/V = 1 V/W |
| Tension |
U
|
V
|
Volts
|
1 V = 1 W/A |
| Resistance |
R
|
W
|
Ohm
|
1 W = 1 V/A = 1/S |
| Conductivity |
G
|
S
|
Siemens
|
1s = 1/W |
| Capacity |
C
|
F
|
Faraday
|
1F = 1 C/V |
| Upload |
Q
|
C
|
Coulomb
|
1 C = 1 A * s |
| Inductance |
L
|
H
|
Henry
|
1:00 = 1 Vs/A |
| Magnetic induction |
B
|
T
|
Tesla
|
1 T = 1 Wb/m2 |
| Magnetic force |
H
|
A/m
|
||
| Magnetic flux |
f
|
WB
|
Weber
|
1 Wb = 1 V * s |
| Difference of temperature |
T
J |
K
° C |
Kelvin
|
0 K =-273.15° C |
 |
||||
