Permeability of vacuum

{
  "id": "MLC-T-CHM-008668",
  "term": "Permeability of vacuum",
  "field": "Chemistry",
  "definition": "A fundamental physical constant, denoted by μ₀, representing the ability of a vacuum to permit the formation of a magnetic field. It is a component of Maxwell's equations and is exactly defined in the SI system. Its value is 4π × 10⁻⁷ henries per meter (H/m).",
  "subject": "Physical and Biophysical Chemistry",
  "references": [
    "Green Book, 2nd ed., p. 15 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/permeability-of-vacuum/"
}