420 Appendix ll.Tables of Physical Constants Magnetic Units Name Symbol em-cgs units mks(SI)）units Conversions Magnetic H 0e=- gln A field m12.s m 1合0e strength Magnetic B G= gin cm12.s b-kgT 1T=104G induction m s·C Magnetization M Maxwell gin A 1A=4π Maxwells cm2 cm2·s m m103 cm2 Magnetic Maxwell= cm32·g2 中 Wb=kg:m2 =V·s1Wb=108 Maxwells flux s·C Susceptibility X Unitless Unitless Xmks =4TXegs (Relative) L Unitless Unitless Same value permeability Energy product BH kJ MGOe m3 1 102 MGOe Conversions from the SI Unit System into the Gaussian Unit System mks cgs Quantity (SI) (Gaussian) Magnetic induction B B/c Magnetic flux P Pg/c Magnetic field strength H cH/4π Magnetization M cM Magnetic dipole moment m Clm Permittivity constant E0 1/4π Permeability constant 0 4m/c2 Electric displacement D D/4T Note:The equations given in this book can be converted from the SI (mks)system into the cgs (Gaussian)unit system and vice versa by re- placing the symbols in the respective equations with the symbols listed in the following table.Symbols which are not listed here remain un- changed.It is imperative that consistent sets of units are utilized. o=4m×10-7=1.257×10-6(W·s/A·m)≡(Kg·m/C2≡(Hm). 60=8.854×10-12(A·s/W·m)=(Fm.Magnetic Units Name Symbol em-cgs units mks (SI) units Conversions Magnetic H Oe m A 1 m A
1 4 0  3 Oe strength Magnetic B G W m b 2
s k  g C T 1 T
104 G Magnetization M cm g 1 1 / / 2 2  s m A 1 m A
Ma c x m w 2 ells Magnetic  Maxwell Wb

V  s 1 Wb
108 Maxwells Susceptibility $ Unitless Unitless $mks
4$cgs (Relative)  Unitless Unitless Same value permeability Energy product BH MGOe m kJ 3 1 m kJ 3
MGOe Conversions from the SI Unit System into the Gaussian Unit System mks cgs Quantity (SI) (Gaussian) Magnetic induction B B/c Magnetic flux +B +B/c Magnetic field strength H cH/4 Magnetization M cM Magnetic dipole moment m cm Permittivity constant 0 1/4 Permeability constant 0 4/c2 Electric displacement D D/4 Note: The equations given in this book can be converted from the SI (mks) system into the cgs (Gaussian) unit system and vice versa by re￾placing the symbols in the respective equations with the symbols listed in the following table. Symbols which are not listed here remain un￾changed. It is imperative that consistent sets of units are utilized. 0
4 107
1.257 106 (V  s/A  m) (Kg  m/C2) (H/m). 0
8.854 1012 (A  s/V  m) (F/m). 4 102 kg  m2 s  C cm3/2  g1/2 s 4 103 Maxwell cm2 g 1/2 cm1/2  s g 1/2 cm1/2  s 420 Appendix II • Tables of Physical Constants field induction flux