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    5

DIMENSIONS AND UNITS

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To get the value of a quantity in Gaussian units, multiply the value ex­pressed in SI units by the conversion factor. Multiples of 3 in the conversion factors result from approximating the speed of light c = 2.9979 X 1010 cm/sec « 3 X 1010 cm/sec.

Physical Quantity

Sym­bol

Dimensions

SI

Gaussian

SI Units

Conversion Factor

Gaussian Units

Capacitance

Charge

Charge density

Conductance

Conductivity

Current

Current density

Density

Displacement

Electric field

Electro- motance

Energy

Energy density

C

P

t2q2 ml2

a

I,i J,j

P D

E

Emf U, W

w, e

m

1/2^3/2

Q

m1/2

13

l*/2t

tq2

I

ml2

t

tq2

1

ml3

t

Q

m1'2!3'2

t

t2

Q

m1/2

l2t

l^H2

m

m

P

P

Q

m1/2

12

l1/2t

ml

m1/2

t2q

l1/2t

ml2

m1/2/1/2

t2q

t

ml2

ml2

t2

t2

m

m

It2

It2

farad coulomb

coulomb /m3

siemens

siemens / m

ampere

ampere /m2

kg/m3

coulomb /m2

volt / m

volt

joule joule/m3

li

9 x 1011 3 x 109

3 x 103 9 x 10 9 x 109 3 x 109 3 x 105 10~3

12tt X 105

1

-    X 10 3

1

-    x 10 3

-4

-2

10 10

7

cm

statcoulomb

statcoulomb /cm3

cm/sec sec-1

statampere

statampere /cm2

g/cm3

statcoulomb /cm2

statvolt/cm

statvolt

erg

erg/cm3

Physical Quantity

Sym­bol

SI

Gaussian

ml

ml

t2

t2

1

1

t

t

ml2

t

tq2

I

ml2

t2

q2

I

I

I

Q

m1'2

It

l1/2t

ml2

m1'2^2

tq

t

m

m1/2

tq

l1/2t

l2q

m1'2^2

t

t

Q

m1'2

It

l1/2t

Q

m ' l '

t

t2

m

m

ml

ml

t

t

m

m

l2t

l2t

ml

 

q2

i

SI Units

Conversion Factor

Gaussian Units

Force

Frequency

Impedance

Inductance Length

Magnetic intensity

Magnetic flux

Magnetic induction

Magnetic moment

Magnetization

Magneto- motance

Mass

Momentum

Momentum density

Permeability

F

i> z

L I

H

<£ B

m, yU,

M

M,

Mmf

m, M P,P

fx

newton

hertz

ohm

henry meter (m)

ampere- turn/m

weber tesla

ampere—m'

ampere- turn/m

ampere- turn

kilogram (kg)

kg-m/s

kg/m2-s henry/m

10

- X 10 9

-li

- x 10-11 9

102

4tt X 10~3 108 104

103

10~3

4tt 10

103

105 10-1

— x 10 4tt

dyne hertz sec/cm

sec2/cm

centimeter (cm)

oersted

maxwell

gauss

oersted- cm

oersted gilbert gram (g)

g-cm/sec g/cm2-sec

Physical Quantity

Sym­bol

SI

Gaussian

SI Units

Conversion Factor

Gaussian Units

Permittivity Polarization

Potential

Power

Power density

Pressure

Reluctance

Resistance

Resistivity

Thermal con­ductivity

Time

Vector potential

Velocity Viscosity

Vorticity Work

VA p

p,p

n

R

t

A

c

w

i

t

m

It 1 t

ml2

fV

ml3

1

Q

m1/2

P

l1/2t

ml2

,1/271/2

m ' l '

t2q

t

ml2

ml2

t3

t3

m

m

It3

It3

m

m

It2

It2

 

1

ml2

I

ml2

t

tq2

I

ml3 tq2

t

ml

ml

t3

t3

t

t

ml

,1/2/1/2 m ' l '

tq

t

I t

m

It 1 t

ml2

l2"

farad/m coulomb/m2

volt

watt watt/m3

pascal

ampere—turn /weber

ohm ohm—m

watt / m- deg (K)

second (s) weber/m

m/s kg/m-s

s"1 joule

36tt X 109

3 x 10'

1 _2 - x 10 2 3

7

10 10

10

4tt X 10~9

-    x 10-11 9

-    x 10-9

9

105

1 106

102

10

1

statcoulomb /cm2

statvolt

erg/sec erg/cm3-sec

dyne/cm2

cm

-l

sec/cm sec

erg/cm-sec- deg (K)

second (sec) gauss-cm

cm/sec poise

sec

-l

10

7

erg

Авторы: 1379 А Б В Г Д Е З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Э Ю Я

Книги: 1908 А Б В Г Д Е З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Э Ю Я