Magnetic constant (vacuum permeability)
Try it yourself:
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magneticConstant
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magneticConstant is the magnetic constant μ₀, associated with magnetic fields in vacuum and SI electromagnetic relations.
It appears in field and inductance formulas alongside the electric constant and speed of light. Keep units with multiply() and convert using to().
Use the current defined value and distinguish vacuum relations from material permeability.
Enter magneticConstant on a calculator line to see its built-in value, or place the name inside a longer expression. Keep any displayed unit attached when converting or combining physical quantities, and check that every other value uses a compatible dimension.
The example above is editable, so you can replace surrounding values and test the constant in your own formula. Browse all constants to compare related values and notation.