The tesla (symbol T) is the SI derived unit of magnetic flux density (or magnetic induction) and defines the intensity (density) of a magnetic field.

The tesla is equal to one weber per square meter and was defined in 1960 in honor of the inventor, scientist, and electrical engineer Nikola Tesla.

In physics, the weber (symbol: Wb) is the SI unit of magnetic flux. It is named after the German physicist Wilhelm Eduard Weber (1804-1891) and was established by the IEC in 1930.

The IEC refers to the International Electrotechnical Commission which is a not-for-profit, non-governmental international standards organization that prepares and publishes International Standards for all electrical, electronic, and related technologies; collectively known as "electrotechnology".