Biomedical Engineering Reference
In-Depth Information
Tabl e A . 3
Multiples and
submultiples of SI units
Value
Name
Symbol
10
12
tera
T
10
9
giga
G
10
6
mega
M
10
3
kilo
k
10
3
milli
m
10
6
micro
10
9
nano
n
10
12
pico
p
10
15
femto
f
10
18
atto
a
Tabl e A . 4
Conversion factors
Conversion factor
a
Property
Dimensions
SI unit
D
3:048
10
1
m
Length
[L]
m
1 ft
D
2:54
10
2
m
(meter)
1 in
1ft
D
3:048
10
1
m
D
4:5359
10
1
kg
Mass
[M]
kg
1 lb
(kilogram)
[MLT
2
]
kgm/s
2
Force
N
D
1lbf
D
4.44822 N
(newton)
1 kgf = 9.80665 N
[ML
1
T
2
N/m
2
D
1:013
10
5
Pa
Pressure
Pa
D
1 atmosphere
1 lbf/in
2
D
6:89476
10
3
Pa
1barD
10
5
Pa
1mmHg
(stress)
(pascal)
D
9.80665 kPa
[ML
2
T
2
]
Energy
J D Nm
1 cal D 4.1868 J
1 eV D
1:6021
10
19
J
(work, heat)
(joule)
t(
ı
C) (Celsius)
T(
ı
K) (Kelvin)
Temperature
T(
ı
K) D t(
ı
C) C 273.16
t(
ı
F) (Fahrenheit)
t(
ı
F)
9/5t(
ı
C)
D
C
32
a
English units:
inch
: in or inch;
foot
:ft;
pound
:lb
Tabl e A . 5
Physical constants
Constant
Symbol
Value
8.3143 Jmole
1
K
1
Universal gas constant
R
6:02252
10
23
mole
1
Avogadro's number
N
1:38054
10
23
JK
1
R/N
k
6:6256
10
34
Js
Planck's constant
h
9:6487
10
4
Cmole
1
Faraday
F
1:6021
10
19
C
Charge of the electron
e
2:2414
10
2
m
3
mole
1
Molar volume at STP
2:997925
10
8
ms
1
Velocity of light
c
