weber, Wb (unit)

This page documents an OPTIMADE Unit Definition. See https://schemas.optimade.org/ for more information.

ID: https://schemas.optimade.org/defs/v1.2/units/si/2019/named/weber
Definition name: weber

Unit name: weber
Latin symbol: Wb
Display symbol: Wb

Description: A derived SI unit for magnetic flux equal to kg·m²·s⁻³·A⁻¹ in the 2019 SI units.

"The weber is the magnetic induction flux that, passing through a single-turn circuit, produces an electromotive force of one volt if it is reduced to zero in one second by uniform decay." [9th CGPM meeting in 1946]

The weber was defined at the 9th CGPM Meeting in 1946, included in SI at the 11th CGPM meeting in 1960, resolution 12, implicitly redefined via the redefinitions of the second at the 13th CGPM Meeting in 1967, resolution 1; the metre at the 17th CGPM meeting (1983), resolution 1; and the kilogram at the 26th CGPM Meeting (2018), resolution 1.

Resources:

Formats: [JSON] [MD]

JSON definition:

{
    "$id": "https://schemas.optimade.org/defs/v1.2/units/si/2019/named/weber",
    "$schema": "https://schemas.optimade.org/meta/v1.2/optimade/physical_unit_definition.json",
    "title": "weber",
    "symbol": "Wb",
    "display-symbol": "Wb",
    "description": "A derived SI unit for magnetic flux equal to kg\u00b7m\u00b2\u00b7s\u207b\u00b3\u00b7A\u207b\u00b9 in the 2019 SI units.\n\n\"The weber is the magnetic induction flux that, passing through a single-turn circuit, produces an electromotive force of one volt if it is reduced to zero in one second by uniform decay.\" [9th CGPM meeting in 1946]\n\nThe weber was defined at the 9th CGPM Meeting in 1946, included in SI at the 11th CGPM meeting in 1960, resolution 12, implicitly redefined via the redefinitions of the second at the 13th CGPM Meeting in 1967, resolution 1; the metre at the 17th CGPM meeting (1983), resolution 1; and the kilogram at the 26th CGPM Meeting (2018), resolution 1.",
    "resources": [
        {
            "relation": "Definition at the 9th CGPM meeting (1948)",
            "resource-id": "https://www.bipm.org/en/committees/cg/cgpm/9-1948"
        },
        {
            "relation": "Definition and establishment of the SI unit system at the 11th CGPM meeting (1960), resolution 12.",
            "resource-id": "https://www.bipm.org/en/committees/cg/cgpm/11-1960/resolution-12"
        },
        {
            "relation": "Redefinition of the kilogram in the 26th CGPM Meeting (2018), resolution 1",
            "resource-id": "https://www.bipm.org/en/committees/cg/cgpm/26-2018/resolution-1"
        },
        {
            "relation": "Wikipedia article describing the unit",
            "resource-id": "https://en.wikipedia.org/wiki/Weber_(unit)"
        }
    ],
    "defining-relation": {
        "base-units": [
            {
                "symbol": "A",
                "id": "https://schemas.optimade.org/defs/v1.2/units/si/2019/base/ampere"
            },
            {
                "symbol": "kg",
                "id": "https://schemas.optimade.org/defs/v1.2/units/si/2019/base/kilogram"
            },
            {
                "symbol": "m",
                "id": "https://schemas.optimade.org/defs/v1.2/units/si/1983/base/metre"
            },
            {
                "symbol": "s",
                "id": "https://schemas.optimade.org/defs/v1.2/units/si/1967/base/second"
            }
        ],
        "base-units-expression": "A^-1*kg*m^2*s^-3"
    },
    "standard": {
        "name": "si",
        "year": 2019,
        "category": "named",
        "symbol": "Wb"
    },
    "x-optimade-definition": {
        "label": "weber_si_2019_named",
        "kind": "unit",
        "format": "1.2",
        "version": "1.2.0",
        "name": "weber"
    }
}