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A bold capital H, measured in amperes per metre.
Also known as: H field, Magnetising field, Magnetic field intensity, Auxiliary magnetic field
H is the magnetic field produced by currents alone, excluding the material's response. It is the quantity an engineer controls — turns times amps per metre — while B is what the material then does about it, which is why transformer design uses both.
Denotes magnetic field strength, the field attributable to free currents, measured in amperes per metre.
Contexts: Laboratory
Excludes the material's magnetisation, which B includes; the two are related through the permeability of the medium.
Contexts: Laboratory
Collides with enthalpy, the Hamiltonian and the Heaviside step function, all written with a capital H.
Contexts: Laboratory
A bold capital letter H, two vertical strokes joined by a horizontal bar at mid-height.