The tesla (symbol T) is the SI derived unit of magnetic field B (which is also known as "magnetic flux density" and "magnetic induction"). The tesla is equal to one weber per square meter and was defined in 1960 in honor of inventor, scientist and electrical engineer Nikola Tesla.

Definition

As an SI derived unit, the tesla can also be expressed as:

$mathrm\{1,\; T\; =\; 1,frac\{Vcdot\; s\}\{m^2\}\; =\; 1,frac\{N\}\{Acdot\; m\}\; =\; 1,frac\{Wb\}\{m^2\}\; =\; 1,frac\{kg\}\{Ccdot\; s\}\}\; =\; 1,frac\{kg\}\{Acdot\; s^2\}$ (In SI base units)

Units used:

• A = ampere
• C = coulomb
• kg = kilogram
• m = meter
• N = newton
• s = second
• T = tesla
• V = volt
• Wb = weber

Conversions

1 tesla is equivalent to:

• 10,000 (or 10⁴) gauss (G), used in CGS system. Thus, 10 G = 1 mT (1 millitesla)
• 1,000,000,000 (or 10⁹) gammas (γ), used in geophysics. Thus, 1 γ = 1 nT (nanotesla)

For the relation to the units of the magnetizing field (Amperes/Meter or Oersted) see the article on permeability.

Examples

References