접두어, 희랍문자 및 단위비교
multiple |
접두어 |
symbol |
|
|
exa |
(엑사) |
E |
|
peta |
(페타) |
P |
|
tera |
(테라) |
T |
|
giga |
(기가) |
G |
|
mega |
(메가) |
M |
|
kilo |
(킬로) |
k |
|
hecto |
(헥타) |
h |
|
deca |
(데카) |
da |
|
deci |
(데시) |
d |
|
centi |
(센치) |
c |
|
milli |
(밀리) |
m |
|
micro |
(마이크론) |
μ |
|
nano |
(나노) |
n |
|
pico |
(피코) |
p |
|
femto |
(펨트) |
f |
|
atto |
(아토) |
a |
대문자 |
소문자 |
읽기 |
|
대문자 |
소문자 |
읽기 |
||
|
|
alpha |
(알파) |
|
|
nu |
(뉴우) |
|
|
|
beta |
(베타) |
|
|
xi |
(크사이) |
|
|
|
gamma |
(감마) |
|
|
omicron |
(오미크론) |
|
|
|
delta |
(델타) |
|
|
pi |
(파이) |
|
|
|
epsilon |
(엡시론) |
|
|
rho |
(로오) |
|
|
|
zeta |
(지이타) |
|
|
sigma |
(시그마) |
|
|
|
eta |
(이이타) |
|
|
tau |
(타우) |
|
|
|
theta |
(쎄타) |
|
|
upsilon |
(웁시론) |
|
|
|
iota |
(요타) |
|
|
phi |
(화이) |
|
|
|
kappa |
(카파) |
|
|
chi |
(카이) |
|
|
|
lambda |
(람다) |
|
|
psi |
(프시) |
|
|
|
mu |
(뮤우) |
|
|
omega |
(오메가) |
|
No |
항 목 |
SI Unit |
English Unit※ (symbol) |
|
Unit |
Symbol |
|||
1 |
Mass |
kilogram |
kg |
lbf-sec²/in |
2 |
Length |
meter |
m |
in. |
3 |
Time |
second |
s |
sec |
4 |
Force |
Newton=kg·m/s² |
N |
lbf |
5 |
Stress or pressure or elastic modulus |
Pascal = N/m² |
Pa |
lbf/in²=psi |
6 |
Moment of a force |
Newton meter=kg·m²/s² |
N·m |
in.-lbf |
7 |
Work or energy |
Joule = N·m |
J |
in.-lbf |
8 |
Power |
Watt = J/s |
W |
in.-lbf/sec |
9 |
Frequency |
Hertz = 1/s |
Hz |
Hz |
10 |
Mass density |
kilogram per cubic meter |
kg/m³ |
lbf-sec²/in⁴ |
11 |
Velocity or speed |
meter per second |
m/s |
in./sec |
12 |
Acceleration |
meter per second squared |
m/s² |
in./sec² |
13 |
Angular displacement or plane angle |
radian |
rad |
rad |
14 |
Angular velocity |
radian per second |
rad/s |
rad/sec |
15 |
Angular acceleration |
radian per second squared |
rad/s² |
rad/sec² |
16 |
Area moment of inertia |
(meter)⁴ |
m⁴ |
in⁴ |
17 |
Mass moment of inertia |
kilogram meter squared |
kg·m² |
in.-lbf-sec² |
18 |
Stiffness coefficient : |
|||
Rectilinear (translational) |
Newton per meter |
N/m |
lbf/in. |
|
Rotational(torsional) |
Newton meter per radian |
N·m/rad |
lbf-in./rad |
|
19 |
Damping coefficient : |
|||
Rectilinear (translational) |
Newton second per meter |
N·s/m |
lbf-sec/in. |
|
Rotational (torsional) |
Newton meter second per radian |
N·m·s/rad |
lbf-in.-sec/rad |
|
20 |
Mass : |
|||
Rectilinear (translational) |
kilogram |
kg |
lbf-sec²/in. |
|
Rotational (torsional) |
kilogram meter squared |
kg·m² |
lbf-sec²/in. |
|
※ ft(foot) can be interchanged with in.(inch) |
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