Appendix A
Physical Constants
Used as Conversion Factors
|
Velocity of light
|
2.99790 x 1010 cm/sec
|
|
Rydberg constant (hydrogen)
|
1.09677 x 105 cm-1
|
|
Gravitational constant
|
6.670 X 10-8 dynes X cm² X g-2
|
|
Faraday constant
|
2.89356x 1014 e.s.u. x g-equiv-1
|
|
Gas constant
|
8.31436 x 107 ergs x deg-1
x mol-1
|
Physical Constants Calculated
|
|
Calculated
|
Observed
|
Units
|
|
Molar gas volume
|
2.2.4145 x 10³
|
22.4157 x 10³
|
cm³
|
|
Mass of hydrogen atom
|
1.67339 x 10-24
|
1.67339 x 10-24
|
g
|
|
Mass of unit atomic weight
|
1.66124 x 10-24
|
1.65990 x 10-24
|
g
|
|
Avogadro's number
|
6.01960 x 1023
|
6.02544 x 1023
|
|
|
Boltzman constant
|
1.38121 x 10-16
|
1.38026 x 10-16
|
ergs/deg
|
|
Planck constant
|
*6.648 x 10-27
|
6.62377 x 10-27
|
erg sec
|
|
Radiation constant
|
5.65475 x 10-5
|
5.6699 x 10-5
|
ergs/(cm² x deg4 x sec)
|
|
Electronic charge
|
**4.80690 x 10-10
|
4.807 x 10-10
|
e.s.u.
|
|
Electron mass
|
9.11126 x 10-28
|
9.10721 x 10-28
|
g
|
|
Ratio H¹ to electron mass
|
1836.62
|
1837.1
|
|
Fine structure constant
|
137.481
|
137.043
|
* Subject to adjustment--See
text
** See text
Natural Units
|
Mechanical Units
|
Value
|
|
s
|
Space
|
0.455884 x 10-5 cm
|
|
t
|
Time
|
0.152068 x 10-15 sec
|
|
s/t
|
Velocity
|
2.99790 x 1010 cm/sec
|
|
s/t²
|
Acceleration
|
1.97142 x 1021 cm/sec²
|
|
t/s
|
Energy
|
5.00100 x 10-4 ergs
|
|
t²/s²
|
Momentum
|
1.66817 x 10-14 g-cm/sec
|
|
t³/s³
|
Mass
|
0.556446 x 10-24
|
|
t/s²
|
Force
|
109.699 dynes
|
|
t/s4
|
Pressure
|
5.27830 x 1012 dynes/cm
|
|
Electrical Units
|
Value
|
|
s
|
Quantity
|
4.80690 x 10-10 e.s.u.
|
|
s
|
Capacitance
|
0.513727 x 10-17 farads
|
|
s/t
|
Current
|
1.05441 x 10-3 amperes
|
|
1/s
|
Power
|
3.28866 x 105 watts
|
|
t/s
|
Electric charge
|
4.80690 x 10-10 e.s.u.
|
|
t/s²
|
Electric potential
|
3.11896 x 108 volts
|
|
t/s³
|
Elec. field intensity
|
6.84156 x 1013 Volts/CM
|
|
t/s³
|
Electric flux density
|
23.1290 e.s.u./cm²
|
|
t²/s³
|
Resistance
|
2.95801 x 1011 ohms
|
|
t²/s²
|
Magnetic charge
|
1.60342 x 10-20 e.s.u.
|
|
t²/s²
|
Magnetic flux
|
4.74294 maxwells
|
|
t²/s³
|
magnetic potential
|
1.04038 x 106 gilberts
|
|
t²/s4
|
Magnetic induction
|
2.28212 x 1011 gauss
|
|
t²/s4
|
Mag. field intensity
|
2.28212 x 1011 oersteds
|
|
Temperature Units
|
Value
|
|
t/s
|
(time-space region)
|
3.62074 x 1012 degrees C
|
|
t/s
|
(time region)
|
510.16 degrees C
|
|