Maxwell (unit)
maxwell | |
---|---|
Unit system | Gaussian units |
Unit of | magnetic flux |
Symbol | Mx |
Named after | James Clerk Maxwell |
Derivation | 1 G⋅cm2 |
Conversions | |
1 Mx in ... | ... is equal to ... |
Gaussian base units | 1 cm3/2⋅ |
SI units | ≘ 10−8 Wb |
The maxwell (symbol: Mx) is the CGS (centimetre–gram–second) unit of magnetic flux (Φ).[1]
History
The unit name honours James Clerk Maxwell,[2] who presented a unified theory of electromagnetism. The maxwell was recommended as a CGS unit at the International Electrical Congress held in 1900 at Paris.[3] This practical unit was previously called a line,[4] reflecting Faraday's conception of the magnetic field as curved lines of magnetic force,[5] which he designated as line of magnetic induction.[4] Kiloline (103 line) and megaline (106 line) were sometimes used because 1 line was very small relative to the phenomena that it was used to measure.[5]
The maxwell was affirmed again unanimously as the unit name for magnetic flux at the Plenary Meeting of the
Definition
The maxwell is a non-
- 1 maxwell = 1 gauss × (centimetre)2
That is, one maxwell is the total flux across a surface of one square centimetre perpendicular to a magnetic field of strength one gauss.
The weber is the related SI unit of magnetic flux, which was defined in 1946.[9]
See also
References
- ISBN 92-822-2213-6, archived(PDF) from the original on 2021-06-04, retrieved 2021-12-16, p. 128
- ISBN 978-8885259003, pp. 53–56
- ^ "Séance de clôture". Congrès international d'électricité (in French). Paris: Gauthier-Villars. 1901. p. 354.
- ^ ISBN 9783319575988. Retrieved 20 April 2018.
- ^ a b Klein, Herbert Arthur (1988) [1974]. The science of measurement: A historical survey. Dover. p. 481.
- PMID 16587728.
- S2CID 51664669.
- ^ "Non-SI units accepted for use with the SI, and units based on fundamental constants (contd.)". SI Brochure: The International System of Units (SI) [8th edition, 2006; updated in 2014]. Bureau international des poids et mesures. Archived from the original on 2019-06-08. Retrieved 19 April 2018.
- ISBN 92-822-2213-6, archived(PDF) from the original on 2021-06-04, retrieved 2021-12-16, p. 144