The ampere was originally defined as one tenth of the CGS system electromagnetic unit of current ( now known as the abampere ), the amount of current that generates a force of two dynes per centimetre of length between two wires one centimetre apart.

* The CGS unit for magnetic field was named gauss in his honour,

The centimetre – gram – second system ( abbreviated CGS or cgs ) is a variant of the metric system of physical units based on centimetre as the unit of length, gram as a unit of mass, and second as a unit of time.

For example, the CGS derived unit of force is the dyne, equal to, while the SI derived unit of force is the newton,.

Furthermore, within CGS, there are several plausible choices of electromagnetic units, leading to different unit " sub-systems ", including Gaussian, " ESU ", " EMU ", and Heaviside – Lorentz.

The continued usage of CGS units is most prevalent in magnetism and related fields, as the primary MKS unit, the tesla, is inconvenienently large, leading to the continued common use of the gauss, the CGS equivalent.

Thus, for example, the CGS unit of pressure, barye, is related to the CGS base units of length, mass, and time in the same way as the SI unit of pressure, pascal, is related to the SI base units of length, mass, and time:

Expressing a CGS derived unit in terms of the SI base units, or vice versa, requires combining the scale factors that relate the two systems:

In physics, the dyne ( symbol " dyn ", from Greek δύναμις ( dynamis ) meaning power, force ) is a unit of force specified in the centimetre-gram-second ( CGS ) system of units, a predecessor of the modern SI.

An erg is the unit of energy and mechanical work in the centimetre-gram-second ( CGS ) system of units, symbol " erg ".

The CGS unit of luminance is the stilb, which is equal to one candela per square centimetre or 10 kcd / m < sup > 2 </ sup >.

* 10 < sup >- 4 </ sup > stilbs ( the CGS unit of luminance )

Other commands under the CGS include an electronic warfare unit, the Honor Guard Unit, the Lake Service and an engineer regiment and signal regiment.

Both the CGS and MKS systems used the same second as their base unit of time.

* One statcoulomb ( statC ), the CGS electrostatic unit of charge ( esu ), is approximately 3. 3356 C or about 1 / 3 nC.

In CGS, the unit of B is the gauss ( G ).

In CGS, the unit of H is the oersted ( Oe ).

On the other hand, in measurements of electromagnetic phenomena ( involving units of charge, electric and magnetic fields, voltage, and so on ), converting between CGS and SI is much more subtle and involved.

Oersted ( abbreviated as Oe ) is the unit of magnetizing field ( also known as H-field, magnetic field strength or intensity ) in the CGS system of units.

The oersted is closely related to the gauss, the CGS unit of magnetic flux density.

The SI unit of magnetic flux is the weber ( Wb ) ( in derived units: volt-seconds ), and the CGS unit is the maxwell.

However, many tables of magnetic susceptibility give CGS values ( more specifically emu-cgs, short for electromagnetic units, or Gaussian-cgs ; both are the same in this context ) that rely on a different definition of the permeability of free space:

For example, the CGS volume magnetic susceptibility of water at 20 ° C is − 7. 19 × 10 < sup >− 7 </ sup > which is − 9. 04 × 10 < sup >− 6 </ sup > using the SI convention.

There are two other measures of susceptibility, the mass magnetic susceptibility ( χ < sub > mass </ sub > or χ < sub > g </ sub >, sometimes χ < sub > m </ sub >), measured in m < sup > 3 </ sup >· kg < sup >− 1 </ sup > in SI or in cm < sup > 3 </ sup >· g < sup >− 1 </ sup > in CGS and the molar magnetic susceptibility ( χ < sub > mol </ sub >) measured in m < sup > 3 </ sup >· mol < sup >− 1 </ sup > ( SI ) or cm < sup > 3 </ sup >· mol < sup >− 1 </ sup > ( CGS ) that are defined below, where ρ is the density in kg · m < sup >− 3 </ sup > ( SI ) or g · cm < sup >− 3 </ sup > ( CGS ) and M is molar mass in kg · mol < sup >− 1 </ sup > ( SI ) or g · mol < sup >− 1 </ sup > ( CGS ).

The maxwell, abbreviated as Mx, is the compound derived CGS unit of magnetic flux.

* Gilbert ( unit ) ( Gb or Gi ), a former CGS unit of magnetomotive force or magnetic potential

Among these, there are two alternative ( non-equivalent ) units of magnetic dipole moment in CGS:

In 1935, TC 1 recommended names for several electrical units, including the weber for the practical unit of magnetic flux ( and the maxwell for the CGS unit ).

In CGS, the unit of M is the oersted ( Oe ).

In CGS the unit of H-field is the oersted and the unit of B-field is the gauss.

However, there remain certain subfields where CGS is prevalent.

This is because there is no one-to-one correspondence between electromagnetic units in SI and those in CGS, as is the case for mechanical units.

Among these choices, Gaussian units are the most common today, and in fact the phrase " CGS units " is often used to refer specifically to CGS-Gaussian units.

There is a one-to-one correspondence between the base units of mechanics in CGS and SI, and the laws of mechanics are not affected by the choice of units.

In the CGS base units, it is equal to one gram centimeter-squared per second-squared ( g · cm < sup > 2 </ sup >/ s < sup > 2 </ sup >).

The ARM is commanded by the Minister of Defense through the Chief of the General Staff ( CGS ) of the ARM.

The poise, the unit of viscosity in the CGS system, was named after him.

The CGS unit of kinematic viscosity was named " stokes " after his work.

The CGS unit of kinematic viscosity was named " stokes " in recognition of his work.

The CGS unit for gravitational gradient is named the eotvos in his honor.

The debye ( symbol: D ) is a CGS unit ( a non-SI metric unit ) of electric dipole moment named in honour of the physicist Peter J. W. Debye.