CHAPTER 4
AN INTRODUCTION TO UNACCEPTABLE DIMENSIONAL UNITS
Table 4-1 shows examples of centimeter-gram-second (CGS) units that have special names. Such specially named CGS units are not accepted for general use in commerce with the SI. Also, none of the other units of the various CGS systems of units, which includes the CGS Electrostatic (ESU), CGS Electromagnetic (EMU), and CGS Gaussian systems, are accepted for general use in commerce with the SI except such units as the centimeter, gram, and second that are also defined in the SI.
TABLE 4-1
| Name | Symbol | Value in SI Units |
| erg | erg | 10^-7 J |
| dyne | dyn | 10^-5 N |
| poise | P | 0.1 Pa*s |
| stokes | St | 10^-4 m^2/s |
| gauss | Gs, G | 10^-4 T |
| oersted | Oe | (10^3 / 4p)*A/m |
| maxwell | Mx | 10^-8 Wb |
| stilb | sb | 1 cd/cm^2 |
| phot | ph | 10^4 lux |
| gal | Gal | 1 cm/s^2 |
Table 4-2 shows other unacceptable special name units.
TABLE 4-2
| Name | Symbol | Value in SI Units |
| fermi | fermi | 10^-15 m |
| photometric carat | metric carat | 2* 10^-4 kg |
| torr | Torr | 101325/760 Pa |
| standard atmosphere | atm | 101325 Pa |
| kilogram-force | kgf | 9.80665 N |
| micron | µ | 10^-6 m |
| calorie | calth | 4.184 J |
| x unit | xu | 1.002*10^-13 m |
| stere | st | 1 m^3 |