Gauss (unit): Difference between revisions

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: 1 G = 1 Mx/cm<sup>2</sup> = 1 abV&sdot;s/cm<sup>2</sup>
: 1 G = 1 Mx/cm<sup>2</sup> = 1 abV&sdot;s/cm<sup>2</sup>


==Related units==
==Related unit==
* The [[tesla]] (T) is the corresponding [[SI]] unit for '''B'''. 1 T corresponds to 10&thinsp;000 G.
* The [[oersted]] is the Gaussian unit of strength of a [[magnetic field]] |'''H'''|. The oersted is defined by  means of an electric current giving the field '''H'''.
* The [[oersted]] is the Gaussian unit of strength of a [[magnetic field]] '''H'''. Note that the oersted is defined by  means of an electric current that gives '''H'''.

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In physics, gauss (symbol G) is the unit of strength of magnetic flux density |B| (also known as magnetic induction). The gauss belongs to the Gaussian and emu (electromagnetic) systems of units, which are cgs (centimeter-gram-second) systems. The unit is related to the SI unit tesla (T) as follows

1 G ≡ 1 Mx/cm2 = 10−4  T.

The unit is named in honor of the German mathematician and physicist Carl Friedrich Gauss.

Definition

The gauss is defined through an electromotive force induced by a change in magnetic field B. For constant surface S and uniform rate of decrease of |B|, Faraday's law takes the simple form

Hence, gauss is maxwell per unit surface, where maxwell (symbol Mx) is the Gaussian unit for the magnetic flux Φ, and |B| is a flux density.

In Gaussian units S is in cm2, time t in s, in abV ( = 10−8 volt), |B| in G, and Φ in Mx:

1 G = 1 Mx/cm2 = 1 abV⋅s/cm2

Related unit

  • The oersted is the Gaussian unit of strength of a magnetic field |H|. The oersted is defined by means of an electric current giving the field H.