Appendix A
International Units and Physical Constants
International Units
Quantity
Unit
Symbol
Dimensions
Length
Meter
m
Mass
Kilogram
kg
Time
Second
s
Temperature
Kelvin
K
Current
Ampere
A
Frequency
Hertz
Hz
1/s
Force
Newton
N
(kg-m)/s 2
Pressure
Pascal
Pa
N/m 2
Energy
Joule
J
N·m
Power
Watt
W
J/s
Electric charge
Coulomb
C
A·s
Potential
Volt
V
J/C
Conductance
Siemens
S
A/V
Resistance
Ohm
V/A
Capacitance
Farad
F
C/V
Magnetic flux
Weber
Wb
V·s
Magnetic induction
Tesla
T
Wb/m 2
Inductance
Henry
H
Wb/A
Physical Constants
Constant
Symbol
Value (mks units)
Speed of light in vacuum
c
2.99793 × 10 8 m/s
Electron charge
q
1.60218 × 10 −19 C
(continued)
© The Editor(s) (if applicable) and The Author(s), under exclusive license
to Springer Nature Singapore Pte Ltd. 2021
G. Keiser, Fiber Optic Communications,
https://doi.org/10.1007/978-981-33-4665-9
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