Orders of magnitude (magnetic field)
This page lists examples of magnetic induction B in teslas and gauss produced by various sources, grouped by orders of magnitude.
Note:
Orders of Magnitude
These examples attempt to make the measuring point clear, usually the surface of the item mentioned.
Factor (tesla) | SI prefix | Value (SI units) | Value (CGS units) | Item |
---|---|---|---|---|
10−18 | attotesla | aT 5 | fG 50 | SQUID magnetometers on Gravity Probe B gyroscopes measure fields at this level over several days of averaged measurements[2] |
10−15 | femtotesla | fT 2 | pG 20 | SQUID magnetometers on Gravity Probe B gyros measure fields at this level in about one second |
10−12 | picotesla | fT to 100 pT 1 | nG to 1 nG 10 | Human brain magnetic field |
10−11 | pT 10 | nG 100 | In September 2006, NASA found "potholes" in the magnetic field in the heliosheath around our solar system that are 10 picoteslas as reported by Voyager 1[3] | |
10−9 | nanotesla | pT to 100 nT 10 | μG to 1 μG 100 | Magnetic field strength in the heliosphere |
10−7 | nT to 60 nT 700 | μG to 600 mG 7 | Magnetic field produced by a toaster, in use, at a distance of 30 cm (1 ft)[4] | |
nT to 100 nT 500 | mG to 1 mG 5 | Magnetic field produced by residential electric distribution lines (34.5 kV) at a distance of 30 cm (1 ft)[4][5] | ||
10−6 | microtesla | μT to 1.3 μT 2.7 | mG to 13 mG 27 | Magnetic field produced by high power (500 kV) transmission lines at a distance of 30 m (100 ft)[5] |
μT to 4 μT 8 | mG to 40 mG 80 | Magnetic field produced by a microwave oven, in use, at a distance of 30 cm (1 ft)[4] | ||
10−5 | μT 24 | mG 240 | Strength of magnetic tape near tape head | |
μT 31 | mG 310 | Strength of Earth's magnetic field at 0° latitude (on the equator) | ||
μT 58 | mG 580 | Strength of Earth's magnetic field at 50° latitude | ||
10−4 | μT 500 | G 5 | The suggested exposure limit for cardiac pacemakers by American Conference of Governmental Industrial Hygienists (ACGIH) | |
10−3 | millitesla | mT 5 | G 50 | The strength of a typical refrigerator magnet[6] |
10−2 | centitesla | |||
10−1 | decitesla | mT 150 | kG 1.5 | The magnetic field strength of a sunspot |
100 | tesla | T to 1 T 2.4 | kG to 10 kG 24 | Coil gap of a typical loudspeaker magnet.[7] |
T to 1 T 2 | kG to 10 kG 20 | Inside the core of a modern 50/60 Hz power transformer[8][9] | ||
T 1.25 | kG 12.5 | Strength of a modern neodymium–iron–boron (Nd2Fe14B) rare earth magnet. A coin-sized neodymium magnet can lift more than 9 kg, erase credit cards.[10] | ||
T to 1.5 T 7 | kG to 15 kG 30 | Strength of medical magnetic resonance imaging systems in practice, experimentally up to 11.7 T[11][12][13] | ||
T 9.4 | kG 94 | Modern high resolution research magnetic resonance imaging system; field strength of a 400 MHz NMR spectrometer | ||
101 | decatesla | T 11.7 | kG 117 | Field strength of a 500 MHz NMR spectrometer |
T 16 | kG 160 | Strength used to levitate a frog[14] | ||
T 23.5 | kG 235 | Field strength of a 1 GHz NMR spectrometer[15] | ||
T 38 | kG 380 | Strongest continuous magnetic field produced by non-superconductive resistive magnet.[16] | ||
T 45 | kG 450 | Strongest continuous magnetic field yet produced in a laboratory (Florida State University's National High Magnetic Field Laboratory in Tallahassee, USA).[17] | ||
102 | hectotesla | T 100 | MG 1 | Strongest pulsed non-destructive magnetic field produced in a laboratory, Pulsed Field Facility at National High Magnetic Field Laboratory's, Los Alamos National Laboratory, Los Alamos, NM, USA).[18] |
103 | kilotesla | T 1200 | MG 12 | Record for indoor pulsed magnetic field, (University of Tokyo, 2018) [19] |
T 2800 | MG 28 | Record for human produced, pulsed magnetic field, (VNIIEF, 2001)[20] | ||
106 | megatesla | MT to 1 MT 100 | GG to 10 TG 1 | Strength of a neutron star |
108 - 1011 | gigatesla | MT to 100 GT 100 | TG to 1 PG 1 | Strength of a magnetar |
1053 | N/A | ×1029 YT 2 | ×1033 YG 2 | Planck magnetic field strength |
References
- ↑ "Bureau International des Poids et Mesures, The International System of Units (SI), 8th edition 2006" (PDF). bipm.org. 2012-10-01. Retrieved 2013-05-26.
- ↑ Gravity Probe B
- ↑ "Surprises from the Edge of the Solar System". NASA. 2006-09-21.
- 1 2 3 "Magnetic Field Levels Around Homes" (PDF). UC San Diego Dept. of Environment, Health & Safety (EH&S). p. 2. Retrieved 2017-03-07.
- 1 2 "EMF in Your Environment: Magnetic Field Measurements of Everyday Electrical Devices". United States Environmental Protection Agency. 1992. pp. 23–24. Retrieved 2017-03-07.
- ↑ "Information on MRI Technique". Nevus Network. Retrieved 2014-01-28.
- ↑ Elliot, Rod. "Power Handling Vs. Efficiency". Retrieved 2008-02-17.
- ↑ "Inductors and transformers" (PDF). eece.ksu.edu. 2003-08-12. Archived from the original (PDF) on September 8, 2008. Retrieved 2013-05-26.
A modern well-designed 60 Hz power transformer will probably have a magnetic flux density between 1 and 2 T inside the core.
- ↑ "Trafo-Bestimmung 3von3". radiomuseum.org. 2009-07-11. Retrieved 2013-06-01.
- ↑ The Tesla Radio Conspiracy
- ↑ Savage, Niel. "The World's Most Powerful MRI Takes Shape".
- ↑ Smith, Hans-Jørgen. "Magnetic resonance imaging". Medcyclopaedia Textbook of Radiology. GE Healthcare. Archived from the original on 2012-02-07. Retrieved 2007-03-26.
- ↑ Orenstein, Beth W. (2006-02-16). "Ultra High-Field MRI — The Pull of Big Magnets". Radiology Today. 7 (3). p. 10. Archived from the original on March 15, 2008. Retrieved 2008-07-10.
- ↑ "Frog defies gravity".
- ↑ "23.5 Tesla Standard-Bore, Persistent Superconducting Magnet".
- ↑ "HFML sets world record with a new 38 tesla magnet".
- ↑ "World's Most Powerful Magnet Tested Ushers in New Era for Steady High Field Research". National High Magnetic Field Laboratory.
- ↑ "Pulsed Field Facility - MagLab". Pulsed Field Facility.
- ↑ Nakamura, D.; Ikeda, A.; Sawabe, H.; Matsuda, Y. H.; Takeyama, S. (2018). "Record indoor magnetic field of 1200 T generated by electromagnetic flux-compression". Review of Scientific Instruments. 89 (9): 095106. doi:10.1063/1.5044557.
- ↑ Bykov, A.I.; Dolotenko, M.I.; Kolokolchikov, N.P.; Selemir, V.D.; Tatsenko, O.M. (2001). "VNIIEF achievements on ultra-high magnetic fields generation". Physica B: Condensed Matter. 294-295: 574–578. doi:10.1016/S0921-4526(00)00723-7.
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