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Magnetic constant

Term · Oil and gas · MLC-T-OAG-002252

A fundamental physical constant, the permeability of free space, symbol mu zero, which links magnetic flux density to magnetic field strength in a vacuum. Its value is approximately 1.2566 times 10 to the minus 6 henries per metre, which is close to 4 pi times 10 to the minus 7. Since the 2019 redefinition of the SI units it is measured rather than defined, and it equals the reciprocal of the electric constant times the square of the speed of light.

Table 1. Record
IdentifierMLC-T-OAG-002252
FieldOil and gas
SubjectGeophysics
Record as JSON 
{
  "id": "MLC-T-OAG-002252",
  "term": "Magnetic constant",
  "field": "Oil and gas",
  "definition": "A fundamental physical constant, the permeability of free space, symbol mu zero, which links magnetic flux density to magnetic field strength in a vacuum. Its value is approximately 1.2566 times 10 to the minus 6 henries per metre, which is close to 4 pi times 10 to the minus 7. Since the 2019 redefinition of the SI units it is measured rather than defined, and it equals the reciprocal of the electric constant times the square of the speed of light.",
  "subject": "Geophysics",
  "url": "https://mlchart.com/terminology/oil-and-gas/magnetic-constant/"
}

Record 2,405 of 4,468 in Oil and gas terminology (MLC-0103). Request the full dataset.