Tesla (unit)

Tesla (unit)

The Tesla (symbol: T) is the SI derived unit of magnetic flux density or magnetic induction (informally, magnetic field strength), commonly used in electromagnetic studies in the field of physics. It is named after the Serbian-American inventor and electrical engineer Nikola Tesla.

Definition

One tesla is equal to one weber per square metre. It can also be defined as the magnetic field intensity that arises when the magnetic flux changes at the rate of one weber per second. The unit was established and incorporated into the International System of Units (SI) in 1960.

Usage

The tesla is used in various scientific and medical applications. In medicine, it is commonly used in magnetic resonance imaging (MRI) technology to measure the strength of the magnetic field produced by the MRI machine. The strength of these machines typically ranges from 0.5 to 3.0 T, but can go up to 7.0 T for human imaging in research environments.

Comparisons

To provide some context, the magnetic field of the Earth at its surface is about 25 to 65 microtesla (µT). A small neodymium magnet may have a magnetic field on the order of 1 T.

See also

• Weber (unit)
• Magnetic field
• Magnetic resonance imaging
• Nikola Tesla

References

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