Tesla (unit): Difference between revisions

tesla
tesla
Unit system	SI
Unit of	magnetic flux density
Symbol	T
Named after	Nikola Tesla
Conversions
1 T in ...	... is equal to ...
SI base units	1 kg⋅s−2⋅A−1
Gaussian units	≘ 104 G

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The tesla (symbol: T) is the unit of magnetic flux density (also called magnetic B-field strength) in the International System of Units (SI).

One tesla is equal to one weber per square metre. The unit was announced during the General Conference on Weights and Measures in 1960 and is named^[1] in honour of Serbian-American electrical and mechanical engineer Nikola Tesla, upon the proposal of the Slovenian electrical engineer France Avčin.

Definition

A particle, carrying a charge of one coulomb (C), and moving perpendicularly through a magnetic field of one tesla, at a speed of one metre per second (m/s), experiences a force with magnitude one newton (N), according to the Lorentz force law. That is, $\mathrm {T={\dfrac {N{\cdot }s}{C{\cdot }m}}} .$

As an SI derived unit, the tesla can also be expressed in terms of other units. For example, a magnetic flux of 1 weber (Wb) through a surface of one square meter is equal to a magnetic flux density of 1 tesla.^[2] That is, $\mathrm {T={\dfrac {Wb}{m^{2}}}} .$

Expressed only in SI base units, 1 tesla is: $\mathrm {T={\dfrac {kg}{A{\cdot }s^{2}}}} ,$ where A is ampere, kg is kilogram, and s is second.^[2]

Additional equivalences result from the derivation of coulombs from amperes (A), $\mathrm {C=A{\cdot }s}$ : $\mathrm {T={\dfrac {N}{A{\cdot }m}}} ,$ the relationship between newtons and joules (J), $\mathrm {J=N{\cdot }m}$ : $\mathrm {T={\dfrac {J}{A{\cdot }m^{2}}}} ,$ and the derivation of the weber from volts (V), $\mathrm {Wb=V{\cdot }s}$ : $\mathrm {T={\dfrac {V{\cdot }{s}}{m^{2}}}} .$ The tesla is named after Nikola Tesla. As with every SI unit named for a person, its symbol starts with an upper case letter (T), but when written in full, it follows the rules for capitalisation of a common noun; i.e., tesla becomes capitalised at the beginning of a sentence and in titles but is otherwise in lower case.

Electric vs. magnetic field

In the production of the Lorentz force, the difference between electric fields and magnetic fields is that a force from a magnetic field on a charged particle is generally due to the charged particle's movement,^[3] while the force imparted by an electric field on a charged particle is not due to the charged particle's movement. This may be appreciated by looking at the units for each. The unit of electric field in the MKS system of units is newtons per coulomb, N/C, while the magnetic field (in teslas) can be written as N/(C⋅m/s). The dividing factor between the two types of field is metres per second (m/s), which is velocity. This relationship immediately highlights the fact that whether a static electromagnetic field is seen as purely magnetic, or purely electric, or some combination of these, is dependent upon one's reference frame (that is, one's velocity relative to the field).^[4]^[5]

In ferromagnets, the movement creating the magnetic field is the electron spin^[6] (and to a lesser extent electron orbital angular momentum). In a current-carrying wire (electromagnets) the movement is due to electrons moving through the wire (whether the wire is straight or circular).

Conversion to non-SI units

One tesla is equivalent to:^[7]^{[page needed]}

10,000 (or 10⁴) G (gauss), used in the CGS system. Thus, 1 G = 10⁻⁴ T = 100 μT (microtesla).
1,000,000,000 (or 10⁹) γ (gamma), used in geophysics.^[8]

For the relation to the units of the magnetising field (ampere per metre or oersted), see the article on permeability.

Examples

The following examples are listed in the ascending order of the magnetic-field strength.

3.2×10⁻⁵ T (31.869 μT) – strength of Earth's magnetic field at 0° latitude, 0° longitude
4×10⁻⁵ T (40 μT) – walking under a high-voltage power line^[9]
5×10⁻³ T (5 mT) – the strength of a typical refrigerator magnet
0.3 T – the strength of solar sunspots
1 T to 2.4 T – coil gap of a typical loudspeaker magnet
1.5 T to 3 T – strength of medical magnetic resonance imaging systems in practice, experimentally up to 17 T^[10]
4 T – strength of the superconducting magnet built around the CMS detector at CERN^[11]
5.16 T – the strength of a specially designed room temperature Halbach array^[12]
8 T – the strength of LHC magnets
11.75 T – the strength of INUMAC magnets, largest MRI scanner^[13]
13 T – strength of the superconducting ITER magnet system^[14]
14.5 T – highest magnetic field strength ever recorded for an accelerator steering magnet at Fermilab^[15]
16 T – magnetic field strength required to levitate a frog^[16] (by diamagnetic levitation of the water in its body tissues) according to the 2000 Ig Nobel Prize in Physics^[17]
17.6 T – strongest field trapped in a superconductor in a lab as of July 2014^[18]
20 T - strength of the large scale high temperature superconducting magnet developed by MIT and Commonwealth Fusion Systems to be used in fusion reactors^{[citation needed]}
27 T – maximal field strengths of superconducting electromagnets at cryogenic temperatures
35.4 T – the current (2009) world record for a superconducting electromagnet in a background magnetic field^[19]
45 T – the current (2015) world record for continuous field magnets^[19]
97.4 T – strongest magnetic field produced by a "non-destructive" magnet^[20]
100 T – approximate magnetic field strength of a typical white dwarf star
1200 T – the field, lasting for about 100 microseconds, formed using the electromagnetic flux-compression technique^[21]
10⁹ T – Schwinger limit above which the electromagnetic field itself is expected to become nonlinear
10⁸ – 10¹¹ T (100 MT – 100 GT) – magnetic strength range of magnetar neutron stars

Notes and references

^ "Details of SI units". sizes.com. 2011-07-01. Retrieved 2011-10-04.
^ ^a ^b The International System of Units (SI), 8th edition, BIPM, eds. (2006), ISBN 92-822-2213-6, Table 3. Coherent derived units in the SI with special names and symbols Archived 2007-06-18 at the Wayback Machine
^ Gregory, Frederick (2003). History of Science 1700 to Present. The Teaching Company.
^ Parker, Eugene (2007). Conversations on electric and magnetic fields in the cosmos. Princeton University press. p. 65. ISBN 978-0691128412.
^ Kurt, Oughstun (2006). Electromagnetic and optical pulse propagation. Springer. p. 81. ISBN 9780387345994.
^ Herman, Stephen (2003). Delmar's standard textbook of electricity. Delmar Publishers. p. 97. ISBN 978-1401825652.
^ McGraw Hill Encyclopaedia of Physics (2nd edition), C. B. Parker, 1994, ISBN 0-07-051400-3.
^ "gamma definition". Oxford Reference. Retrieved 2 January 2024.
^ "EMF: 7. Extremely low frequency fields like those from power lines and household appliances". ec.europa.eu. Archived from the original on 2021-02-24. Retrieved 2022-05-13.
^ "Ultra-High Field". Bruker BioSpin. Archived from the original on 21 July 2012. Retrieved 4 October 2011.
^ "Superconducting Magnet in CMS". Retrieved 9 February 2013.
^ "The Strongest Permanent Dipole Magnet" (PDF). Retrieved 2 May 2020.
^ "ISEULT – INUMAC". Retrieved 17 February 2014.
^ "ITER – the way to new energy". Retrieved 19 April 2012.
^ Hesla, Leah (13 July 2020). "Fermilab achieves 14.5-tesla field for accelerator magnet, setting new world record". Retrieved 13 July 2020.
^ Berry, M. V.; Geim, A. K. (1997). "Of Flying Frogs and Levitrons" by M. V. Berry and A. K. Geim, European Journal of Physics, v. 18, 1997, p. 307–13" (PDF). European Journal of Physics. 18 (4): 307–313. doi:10.1088/0143-0807/18/4/012. S2CID 1499061. Archived from the original (PDF) on 8 October 2020. Retrieved 4 October 2020.
^ "The 2000 Ig Nobel Prize Winners". August 2006. Retrieved 12 May 2013.)
^ "Superconductor Traps The Strongest Magnetic Field Yet". 2 July 2014. Retrieved 2 July 2014.
^ ^a ^b "Mag Lab World Records". Media Center. National High Magnetic Field Laboratory, USA. 2008. Retrieved 24 October 2015.
^ "World record pulsed magnetic field". Physics World. 31 August 2011. Retrieved 26 January 2022.)
^ D. Nakamura, A. Ikeda, H. Sawabe, Y. H. Matsuda, and S. Takeyama (2018), Magnetic field milestone

External links

Gauss ↔ Tesla Conversion Tool

[1] "Details of SI units". sizes.com. 2011-07-01. Retrieved 2011-10-04.

[brochure-2] The International System of Units (SI), 8th edition, BIPM, eds. (2006), ISBN 92-822-2213-6, Table 3. Coherent derived units in the SI with special names and symbols Archived 2007-06-18 at the Wayback Machine

[3] Gregory, Frederick (2003). History of Science 1700 to Present. The Teaching Company.

[4] Parker, Eugene (2007). Conversations on electric and magnetic fields in the cosmos. Princeton University press. p. 65. ISBN 978-0691128412.

[5] Kurt, Oughstun (2006). Electromagnetic and optical pulse propagation. Springer. p. 81. ISBN 9780387345994.

[6] Herman, Stephen (2003). Delmar's standard textbook of electricity. Delmar Publishers. p. 97. ISBN 978-1401825652.

[7] McGraw Hill Encyclopaedia of Physics (2nd edition), C. B. Parker, 1994, ISBN 0-07-051400-3.

[NGDC-8] "gamma definition". Oxford Reference. Retrieved 2 January 2024.

[9] "EMF: 7. Extremely low frequency fields like those from power lines and household appliances". ec.europa.eu. Archived from the original on 2021-02-24. Retrieved 2022-05-13.

[10] "Ultra-High Field". Bruker BioSpin. Archived from the original on 21 July 2012. Retrieved 4 October 2011.

[11] "Superconducting Magnet in CMS". Retrieved 9 February 2013.

[12] "The Strongest Permanent Dipole Magnet" (PDF). Retrieved 2 May 2020.

[13] "ISEULT – INUMAC". Retrieved 17 February 2014.

[14] "ITER – the way to new energy". Retrieved 19 April 2012.

[15] Hesla, Leah (13 July 2020). "Fermilab achieves 14.5-tesla field for accelerator magnet, setting new world record". Retrieved 13 July 2020.

[16] Berry, M. V.; Geim, A. K. (1997). "Of Flying Frogs and Levitrons" by M. V. Berry and A. K. Geim, European Journal of Physics, v. 18, 1997, p. 307–13" (PDF). European Journal of Physics. 18 (4): 307–313. doi:10.1088/0143-0807/18/4/012. S2CID 1499061. Archived from the original (PDF) on 8 October 2020. Retrieved 4 October 2020.

[17] "The 2000 Ig Nobel Prize Winners". August 2006. Retrieved 12 May 2013.)

[18] "Superconductor Traps The Strongest Magnetic Field Yet". 2 July 2014. Retrieved 2 July 2014.

[MagnetLab-19] "Mag Lab World Records". Media Center. National High Magnetic Field Laboratory, USA. 2008. Retrieved 24 October 2015.

[20] "World record pulsed magnetic field". Physics World. 31 August 2011. Retrieved 26 January 2022.)

[21] D. Nakamura, A. Ikeda, H. Sawabe, Y. H. Matsuda, and S. Takeyama (2018), Magnetic field milestone

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@@ Line 1: / Line 1: @@
 {{short description|SI unit of magnetic field strength}}
 {{Infobox Unit
-|name = tesla
+ | name       = tesla
-|image =
+ | image      =
-|caption =
+ | caption    =
-|standard = [[SI]]
+ | standard   = [[SI]]
-|quantity = [[magnetic flux density]]
+ | quantity   = [[magnetic flux density]]
-|symbol=T
+ | symbol     = T
-|namedafter = [[Nikola Tesla]]
+ | namedafter = [[Nikola Tesla]]
-| units1 = [[SI base unit]]s
+ | units1     = [[SI base unit]]s
-| inunits1 = 1 [[kilogram|kg]]⋅[[second|s]]<sup>−2</sup>⋅[[ampere|A]]<sup>−1</sup>
+ | inunits1   = 1 [[kilogram|kg]]⋅[[second|s]]<sup>−2</sup>⋅[[ampere|A]]<sup>−1</sup>
-| units2 = [[Gaussian units]]
+ | units2     = [[Gaussian units]]
-| inunits2 = ≘ {{val|e=4|u=[[Gauss (unit)|G]]}}
+ | inunits2   = ≘ {{val|e=4|u=[[Gauss (unit)|G]]}}
 }}
 The '''tesla''' (symbol: '''T''') is the unit of [[Magnetic field#The B-field|magnetic flux density]] (also called [[Magnetic field#The B-field|magnetic B-field]] strength) in the [[International System of Units]] (SI)<!--Because "field strength" is ambiguous; see link for discussion of H and B; EDIT: no it's not: B is the only fundamental field, H includes material's properties; the magnetic flux density is like finding the flux of B through dS, B*dS then dividing by dS-->. <!--When written with capital T, Tesla usually means the inventor [[Nikola Tesla]]. When used as a unit for magnetic field strength, one must write "tesla".-->
@@ Line 19: / Line 19: @@
 == Definition ==
 A particle, carrying a charge of one [[coulomb]] (C), and moving perpendicularly through a magnetic field of one tesla, at a speed of one metre per second (m/s), experiences a force with magnitude one [[newton (unit)|newton]] (N), according to the [[Lorentz force law]].  That is,
+<math display=block>\mathrm{T = \dfrac{N{\cdot}s}{C{\cdot}m}}.</math>
-:<math> \text{T}
-= \dfrac{\text{N}{\cdot}\text{s}}{\text{C}{\cdot}\text{m}}.</math>
 As an [[SI derived unit]], the tesla can also be expressed in terms of other units.  For example, a [[magnetic flux]] of 1 [[weber (unit)|weber]] (Wb) through a surface of one square meter is equal to a [[magnetic flux density]] of 1 tesla.<ref name="brochure">''The International System of Units (SI), 8th edition'', [[BIPM]], eds. (2006), {{ISBN|92-822-2213-6}}, [http://www.bipm.org/en/si/si_brochure/chapter2/2-2/table3.html Table 3. Coherent derived units in the SI with special names and symbols] {{webarchive|url=https://web.archive.org/web/20070618123613/http://www.bipm.org/en/si/si_brochure/chapter2/2-2/table3.html |date=2007-06-18 }}</ref>  That is,
-:<math> \text{T} = \dfrac{\text{Wb}}{\text{m}^2}.</math>
+<math display=block>\mathrm{T = \dfrac{Wb}{m^2}}.</math>
 Expressed only in [[SI base unit]]s, 1 tesla is:
-:<math> \text{T} = \dfrac{\text{kg}}{\text{A}{\cdot}\text{s}^2},</math><ref name="brochure" />
+<math display=block>\mathrm{T = \dfrac{kg}{A{\cdot}s^2}},</math>
-where A = [[ampere]], kg = [[kilogram]], and s = [[second]].
+where A is [[ampere]], kg is [[kilogram]], and s is [[second]].<ref name="brochure" />
 <!-- The additional derived unit equivalences may not be valuable, consider deleting these -->
-Additional equivalences result from the derivation of coulombs from [[ampere]]s (A), <math>\text{C} = \text{A} \cdot \text{s}</math>:
+Additional equivalences result from the derivation of coulombs from [[ampere]]s (A), <math>\mathrm{C = A {\cdot} s}</math>:
-:<math> \text{T} = \dfrac{\text{N}}{\text{A}{\cdot}\text{m}},</math>
+<math display=block>\mathrm{T = \dfrac{N}{A{\cdot}m}},</math>
-the relationship between newtons and [[joule]]s (J), <math>\text{J} = \text{N} \cdot \text{m}</math>:
+the relationship between newtons and [[joule]]s (J), <math>\mathrm{J = N {\cdot} m}</math>:
-:<math> \text{T} = \dfrac{\text{J}}{\text{A}{\cdot}\text{m}^2},</math>
+<math display=block>\mathrm{T = \dfrac{J}{A{\cdot}m^2}},</math>
-and the derivation of the weber from [[volt]]s (V), <math>\text{Wb} = \text{V} \cdot \text{s}</math>:
+and the derivation of the weber from [[volt]]s (V), <math>\mathrm{Wb = V {\cdot} s}</math>:
-:<math> \text{T} = \dfrac{\text{V}{\cdot}{\text{s}}}{\text{m}^2}.</math>
+<math display=block>\mathrm{T = \dfrac{V{\cdot}{s}}{m^2}}.</math>
 {{SI unit lowercase|Nikola Tesla|tesla|T}}
@@ Line 44: / Line 43: @@
 In [[ferromagnets]], the movement creating the magnetic field is the [[electron spin]]<ref>{{cite book|last=Herman|first=Stephen|year=2003|title=Delmar's standard textbook of electricity|publisher=Delmar Publishers|page=97|url=https://books.google.com/books?id=kddgHk0P3NcC&pg=PA97 |isbn=978-1401825652}}</ref> (and to a lesser extent electron [[Angular momentum operator#Orbital angular momentum operator|orbital angular momentum]]). In a current-carrying wire ([[electromagnet]]s) the movement is due to electrons moving through the wire (whether the wire is straight or circular).
-== Conversion no non-SI units ==
+== Conversion to non-SI units ==
-One tesla is equivalent to:<ref>McGraw Hill Encyclopaedia of Physics (2nd Edition), C.B. Parker, 1994, {{ISBN|0-07-051400-3}}</ref>{{pn|date=June 2017}}
+One tesla is equivalent to:<ref>McGraw Hill Encyclopaedia of Physics (2nd edition), C. B. Parker, 1994, {{ISBN|0-07-051400-3}}.</ref>{{pn|date=June 2017}}
+{{plainlist|indent=1|1=
-: 10,000 (or 10<sup>4</sup>) G ([[Gauss (unit)|gauss]]), used in the [[CGS]] system. Thus, 1&nbsp;G = 10<sup>−4</sup>&nbsp;T = 100 μT (microtesla).
+* 10,000 (or 10<sup>4</sup>) G ([[Gauss (unit)|gauss]]), used in the [[CGS]] system. Thus, 1&nbsp;G = 10<sup>−4</sup>&nbsp;T = 100 μT (microtesla).
-: 1,000,000,000 (or 10<sup>9</sup>)&nbsp;γ (gamma), used in [[geophysics]].<ref name=NGDC>{{cite web |url=http://www.ngdc.noaa.gov/geomag/faqgeom.shtml |title=Geomagnetism Frequently Asked Questions |publisher=National Geophysical Data Center |access-date=21 October 2013}}</ref> Thus, 1&nbsp;γ = 1&nbsp;nT (nanotesla).
+* 1,000,000,000 (or 10<sup>9</sup>)&nbsp;γ (gamma), used in [[geophysics]].<ref name=NGDC>{{cite web |url=https://www.oxfordreference.com/display/10.1093/oi/authority.20110803095841979 |title=gamma definition |publisher=Oxford Reference |access-date=2 January 2024}}</ref>
+}}
-For the relation to the units of the [[Effective magnetic field|magnetising field]] (ampere per metre or [[Oersted]]), see the article on [[Permeability (electromagnetism)|permeability]].
+For the relation to the units of the [[Effective magnetic field|magnetising field]] (ampere per metre or [[oersted]]), see the article on [[Permeability (electromagnetism)|permeability]].
 == Examples ==
 {{Main article|Orders of magnitude (magnetic field)}}
 The following examples are listed in the ascending order of the magnetic-field strength.
-* 3.2&nbsp;×&nbsp;10<sup>−5</sup>&nbsp;T (31.869&nbsp;μT) – strength of [[Earth's magnetic field]] at 0° latitude, 0° longitude
+* {{val|3.2e-5|u=T}} (31.869&nbsp;μT) – strength of [[Earth's magnetic field]] at 0° latitude, 0° longitude
-* 4&nbsp;×&nbsp;10<sup>−5</sup>&nbsp;T (40&nbsp;μT) – walking under a [[high-voltage power line]]<ref>{{Cite web |title=EMF: 7. Extremely low frequency fields like those from power lines and household appliances |url=https://ec.europa.eu/health/scientific_committees/opinions_layman/en/electromagnetic-fields07/l-2/7-power-lines-elf.htm |archive-url=https://web.archive.org/web/20210224131026/https://ec.europa.eu/health/scientific_committees/opinions_layman/en/electromagnetic-fields07/l-2/7-power-lines-elf.htm |archive-date=2021-02-24 |access-date=2022-05-13 |website=ec.europa.eu}}</ref>
+* {{val|4e-5|u=T}} (40&nbsp;μT) – walking under a [[high-voltage power line]]<ref>{{Cite web |title=EMF: 7. Extremely low frequency fields like those from power lines and household appliances |url=https://ec.europa.eu/health/scientific_committees/opinions_layman/en/electromagnetic-fields07/l-2/7-power-lines-elf.htm |archive-url=https://web.archive.org/web/20210224131026/https://ec.europa.eu/health/scientific_committees/opinions_layman/en/electromagnetic-fields07/l-2/7-power-lines-elf.htm |archive-date=2021-02-24 |access-date=2022-05-13 |website=ec.europa.eu}}</ref>
-* 5&nbsp;×&nbsp;10<sup>−3</sup>&nbsp;T (5&nbsp;mT) – the strength of a typical [[refrigerator magnet]]
+* {{val|5e-3|u=T}} (5&nbsp;mT) – the strength of a typical [[refrigerator magnet]]
 * 0.3&nbsp;T – the strength of solar sunspots
-* 1.25&nbsp;T – magnetic flux density at the surface of a [[neodymium magnet]]
 * 1&nbsp;T to 2.4&nbsp;T – coil gap of a typical loudspeaker magnet
-* 1.5&nbsp;T to 3&nbsp;T – strength of medical [[magnetic resonance imaging]] systems in practice, experimentally up to 17 T<ref>{{cite web |url=http://www.bruker-biospin.com/uhf-mri.html |title=Ultra-High Field |publisher=Bruker BioSpin |access-date=4 October 2011 |archive-date=21 July 2012 |archive-url=https://archive.is/20120721045726/http://www.bruker-biospin.com/uhf-mri.html |url-status=dead }}</ref>
+* 1.5&nbsp;T to 3&nbsp;T – strength of medical [[magnetic resonance imaging]] systems in practice, experimentally up to 17 T<ref>{{cite web |url=http://www.bruker-biospin.com/uhf-mri.html |title=Ultra-High Field |publisher=Bruker BioSpin |access-date=4 October 2011 |archive-date=21 July 2012 |archive-url=https://archive.today/20120721045726/http://www.bruker-biospin.com/uhf-mri.html |url-status=dead }}</ref>
 * 4&nbsp;T – strength of the [[Superconductivity|superconducting]] magnet built around the [[Compact Muon Solenoid|CMS]] detector at [[CERN]]<ref>{{cite web|title=Superconducting Magnet in CMS|url=http://cms.web.cern.ch/news/superconducting-magnet|access-date=9 February 2013}}</ref>
 * 5.16&nbsp;T – the strength of a specially designed room temperature [[Halbach array]]<ref>{{cite web|title=The Strongest Permanent Dipole Magnet|url=https://accelconf.web.cern.ch/p03/PAPERS/WPAE024.PDF|access-date=2 May 2020}}</ref>
@@ Line 69: / Line 69: @@
 * 16&nbsp;T – magnetic field strength required to levitate a [[frog]]<ref>{{cite journal|title=Of Flying Frogs and Levitrons" by M. V. Berry and A. K. Geim, European Journal of Physics, v. 18, 1997, p. 307–13 |year=1997 |doi=10.1088/0143-0807/18/4/012 |s2cid=1499061 |url=https://pdfs.semanticscholar.org/0f3f/3d33ea070d441e51de7d4ab4dc89af267edd.pdf |archive-url=https://web.archive.org/web/20201008003534/https://pdfs.semanticscholar.org/0f3f/3d33ea070d441e51de7d4ab4dc89af267edd.pdf |url-status=dead |archive-date=8 October 2020 |access-date=4 October 2020|last1=Berry |first1=M. V. |last2=Geim |first2=A. K. |journal=European Journal of Physics |volume=18 |issue=4 |pages=307–313 }}</ref> (by [[Magnetic levitation#Diamagnetism|diamagnetic levitation]] of the water in its body tissues) according to the 2000 [[Ig Nobel Prize]] in Physics<ref>{{cite web|title=The 2000 Ig Nobel Prize Winners|date=August 2006|url=http://www.improbable.com/ig/winners/#ig2000|access-date=12 May 2013}})</ref>
 * 17.6&nbsp;T – strongest field trapped in a superconductor in a lab as of July 2014<ref>{{cite web|url=http://www.popsci.com/article/technology/superconductor-traps-strongest-magnetic-field-yet |title=Superconductor Traps The Strongest Magnetic Field Yet|date=2 July 2014 |access-date=2 July 2014}}</ref>
+*20 T - strength of the large scale high temperature superconducting magnet developed by MIT and Commonwealth Fusion Systems to be used in fusion reactors{{citeneeded|date = March 2024}}
 * 27 T – maximal field strengths of [[Superconducting magnet|superconducting electromagnets]] at cryogenic temperatures
 * 35.4 T – the current (2009) world record for a superconducting electromagnet in a background magnetic field<ref name="MagnetLab">{{cite web
@@ Line 75: / Line 76: @@
   | publisher = National High Magnetic Field Laboratory, USA
   | year = 2008
-  | url = https://nationalmaglab.org/about/facts-figures/world-records
+  | url = https://nationalmaglab.org/about-the-maglab/facts-figures/world-records/
   | access-date = 24 October 2015}}</ref>
 * 45 T – the current (2015) world record for continuous field magnets<ref name="MagnetLab"/>
-* 97.4 T – strongest magnetic field produced by a "non-destructive" magnet <ref>{{cite news|title=World record pulsed magnetic field |newspaper=Physics World |url=https://physicsworld.com/a/world-record-pulsed-magnetic-f/#:~:text=Last%20week%20saw%20researchers%20at%20the%20Los%20Alamos,following%20day%20with%20an%20impressive%2097.4%20T%20field. |date=31 August 2011 |access-date=26 January 2022 }})</ref>
+* 97.4 T – strongest magnetic field produced by a "non-destructive" magnet<ref>{{cite news|title=World record pulsed magnetic field |newspaper=Physics World |url=https://physicsworld.com/a/world-record-pulsed-magnetic-f/#:~:text=Last%20week%20saw%20researchers%20at%20the%20Los%20Alamos,following%20day%20with%20an%20impressive%2097.4%20T%20field. |date=31 August 2011 |access-date=26 January 2022 }})</ref>
 * 100 T – approximate magnetic field strength of a typical [[white dwarf]] star
 * 1200 T – the field, lasting for about 100 microseconds, formed using the electromagnetic flux-compression technique<ref>''D. Nakamura, A. Ikeda, H. Sawabe, Y. H. Matsuda, and S. Takeyama (2018)'', [https://www.u-tokyo.ac.jp/focus/en/press/z0508_00008.html Magnetic field milestone]</ref>
@@ Line 98: / Line 99: @@
 [[Category:Units of magnetic flux density]]
 [[Category:1960 introductions]]
-[[Category:Nikola Tesla]]
+[[Category:Nikola Tesla|Unit]]

v t e SI units
Base units	ampere candela kelvin kilogram metre mole second
Derived units with special names	becquerel coulomb degree Celsius farad gray henry hertz joule katal lumen lux newton ohm pascal radian siemens sievert steradian tesla volt watt weber
Other accepted units	astronomical unit dalton day decibel degree of arc electronvolt hectare hour litre minute minute and second of arc neper tonne
See also	Conversion of units Metric prefixes Historical definitions of the SI base units 2019 revision of the SI System of units of measurement
Category

v t e Nikola Tesla
Career and inventions	Patents Plasma lamp plasma globe Polyphase system Alternating-current commutatorless induction motor Tesla Experimental Station Teleforce Telegeodynamics Tesla coil history Wireless power Resonant inductive coupling Radio control Tesla turbine Tesla's oscillator Tesla valve Three-phase electric power Wardenclyffe Tower Tesla Electric Light and Manufacturing
Writings	The Inventions, Researches, and Writings of Nikola Tesla Colorado Springs Notes, 1899–1900 "Fragments of Olympian Gossip" My Inventions: The Autobiography of Nikola Tesla
Other	War of the currents Westinghouse Electric World Wireless System In popular culture
Related	Nikola Tesla Museum Nikola Tesla Memorial Center Tesla Science Center at Wardenclyffe IEEE Nikola Tesla Award Tesla Satellite Award Belgrade Nikola Tesla Airport New Yorker Hotel The Secret of Nikola Tesla (1980 film) Tesla – Lightning in His Hand (2003 opera) The Prestige (2006 film) Tower to the People (2015 documentary) Tesla (2016 film) The Tesla World Light (2017 film) The Current War (2019 film) "Nikola Tesla's Night of Terror" (2020 TV episode) Tesla (2020 film) Tesla: Man Out of Time Wizard: The Life and Times of Nikola Tesla The Man Who Invented the Twentieth Century Boat SI derived unit Lunar crater Asteroid