Tesla (unit)

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Tesla (unit)

The tesla (symbol T) is the SI derived unit

SI derived unit

SI derived units are part of the SI system of measurement Units of measurements and are derived from the seven SI base units.Note that while the names of all SI units are in lowercase, the symbols of units named after people are written with an initial capital letter ....
of magnetic flux density B (which is also known as "magnetic field strength" and "magnetic induction"). The tesla is equal to one weber

Weber (unit)

In physics, the weber is the SI physical unit of magnetic flux. It is named after the Germany physicist Wilhelm Eduard Weber ....
per square metre and was defined in 1960 in honor of inventor

Inventor

An inventor is a person who creates or discovers a new method, form, device or other useful means. The word inventor comes form the latin verb invenire, invent-, to find....
, scientist

Scientist

A scientist, in the broadest sense, refers to any person that engages in a system activity to acquire knowledge or an individual that engages in such practices and traditions that are linked to schools of thought or philosophy....
and electrical engineer Nikola Tesla

Nikola Tesla

Nikola Tesla was an inventor and a mechanical engineer and electrical engineer. Tesla was born in the village of Smiljan near the town of Gospic, in Croatia ....
. One billionth of a tesla is a nanotesla, equivalent to 0.01 mG or 0.01 milligauss, and it is in nanoteslas that common metric home measurements are made to determine local magnetic field exposure.

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Encyclopedia

The tesla (symbol T) is the SI derived unit

SI derived unit

Weber (unit)

In physics, the weber is the SI physical unit of magnetic flux. It is named after the Germany physicist Wilhelm Eduard Weber ....
per square metre and was defined in 1960 in honor of inventor

Inventor

An inventor is a person who creates or discovers a new method, form, device or other useful means. The word inventor comes form the latin verb invenire, invent-, to find....
, scientist

Scientist

Nikola Tesla

Definition

As an SI derived unit

SI derived unit

SI derived units are part of the SI system of measurement Units of measurements and are derived from the seven SI base units.Note that while the names of all SI units are in lowercase, the symbols of units named after people are written with an initial capital letter ....
, the tesla can also be expressed as: (In SI base unit
SI base unit

The International System of Units defines seven dimensional analysis SI base units. All other physical units can be derived from these base units: these are known as SI derived units....
s) Units used:

A = ampere
Ampere

The ampere is the International System of Units unit of electric current. The ampere, in practice often shortened to amp, is an SI base unit, and is named after Andr?-Marie Amp?re, one of the main discoverers of electromagnetism....
C = coulomb
Coulomb

The coulomb is the SI unit of electric charge. It is named after Charles-Augustin de Coulomb....
kg = kilogram
Kilogram

The kilogram or kilogrammeThe spelling kilogram is used by the International Committee for Weights and Measures and the U.S....
m = metre
Metre

The metre or meter is a Unit of measurement of length. It is the SI base unit of length in the metric system and in the International System of Units , used around the world for general and scientific purposes....
N = newton
Newton

The newton is the International System of Units SI derived unit of force, named after Isaac Newton in recognition of his work on classical mechanics....
s = second
Second

The second , sometimes abbreviated sec., is the name of a units of measurement of time, and is the International System of Units SI base unit of time....
T = tesla
V = volt
Volt

The volt is the SI SI derived unit of electric potential difference or electromotive force, commonly known as voltage. It is named in honor of the Lombard physicist Alessandro Volta , who invented the voltaic pile, possibly the first chemical battery ....
Wb = weber
Weber (unit)

In physics, the weber is the SI physical unit of magnetic flux. It is named after the Germany physicist Wilhelm Eduard Weber ....

Conversions

1 tesla is equivalent to:

10,000 (or 10⁴) gauss
Gauss (unit)

The gauss, abbreviated as G, is the cgs units of measurement of a magnetic field B , named after the German mathematician and physicist Carl Friedrich Gauss....
(G), used in the CGS system. Thus, 10 G = 1 mT (1 millitesla)
1,000,000,000 (or 10⁹) gammas, used in geophysics
Geophysics

Geophysics, a major discipline of the Earth sciences, is the study of the Earth by the quantitative observation of its physical properties, especially by Seismology, Electromagnetism, Radioactive decay, galvanic and potential field methods....
. Thus, 1 ? = 1 nT (nanotesla)

For those concerned with low-frequency electromagnetic radiation in the home, the following conversions are needed most:

1000 nanotesla = 1 microtesla = 10 milligauss (mG)
1,000,000 microtesla = 1 tesla

For the relation to the units of the magnetizing field

Magnetic field

A magnetism field is a vector field which can exert a magnetic force on moving electric charges and on magnetic dipoles . When placed in a magnetic field, magnetic dipoles tend to align their axes parallel to the magnetic field....
(ampere

Ampere

The ampere is the International System of Units unit of electric current. The ampere, in practice often shortened to amp, is an SI base unit, and is named after Andr?-Marie Amp?re, one of the main discoverers of electromagnetism....
s per metre

Metre

The metre or meter is a Unit of measurement of length. It is the SI base unit of length in the metric system and in the International System of Units , used around the world for general and scientific purposes....
or oersted

Oersted

Oersted is the unit of Magnetic field#The H field in the CGS system of units. It is defined as 1000/4p amperes per meter of flux path, in terms of SI units....
s) see the article on permeability

Permeability (electromagnetism)

In electromagnetism, permeability is the degree of magnetization of a material that responds linearly to an applied magnetic field. Magnetic permeability is typically represented by the Greek letter Mu ....
.

Examples

31 µT (3.1×10^-5 T) - strength of Earth's magnetic field at 0° latitude (on the equator)