farad, F (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/1983/named/farad
Definition name: farad

Unit name: farad
Latin symbol: F
Display symbol: F

Description: A derived SI unit for electrical capacitance equal to kg⁻¹·m⁻²·s⁴·A² in the 1967 SI units.

"The farad is the capacitance of an electric capacitor between whose plates an electric potential difference of one volt appears when it is charged with an amount of electricity equal to one coulomb." [9th CGPM meeting in 1946]

The farad 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 redefinition of the second at the 13th CGPM Meeting in 1967, resolution 1, and again implicity redefined via the redefinition of the metre at the 17th CGPM meeting (1983), resolution 1.

Resources:

Formats: [JSON] [MD]

JSON definition:

{
    "$id": "https://schemas.optimade.org/defs/v1.2/units/si/1983/named/farad",
    "$schema": "https://schemas.optimade.org/meta/v1.2/optimade/physical_unit_definition.json",
    "title": "farad",
    "symbol": "F",
    "display-symbol": "F",
    "description": "A derived SI unit for electrical capacitance equal to kg\u207b\u00b9\u00b7m\u207b\u00b2\u00b7s\u2074\u00b7A\u00b2 in the 1967 SI units.\n\n\"The farad is the capacitance of an electric capacitor between whose plates an electric potential difference of one volt appears when it is charged with an amount of electricity equal to one coulomb.\" [9th CGPM meeting in 1946]\n\nThe farad 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 redefinition of the second at the 13th CGPM Meeting in 1967, resolution 1, and again implicity redefined via the redefinition of the metre at the 17th CGPM meeting (1983), resolution 1.",
    "resources": [
        {
            "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 metre at the 17th CGPM meeting (1983), resolution 1",
            "resource-id": "https://www.bipm.org/en/committees/cg/cgpm/17-1983/resolution-1"
        },
        {
            "relation": "Redefinition of the second in the 13th CGPM Meeting (1967), resolution 1",
            "resource-id": "https://www.bipm.org/en/committees/cg/cgpm/13-1967/resolution-1"
        },
        {
            "relation": "Wikipedia article describing the unit",
            "resource-id": "https://en.wikipedia.org/wiki/Farad"
        }
    ],
    "defining-relation": {
        "base-units": [
            {
                "symbol": "A",
                "id": "https://schemas.optimade.org/defs/v1.2/units/si/1983/base/ampere"
            },
            {
                "symbol": "kg",
                "id": "https://schemas.optimade.org/defs/v1.2/units/si/1960/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^2*kg^-1*m^-2*s^4"
    },
    "standard": {
        "name": "si",
        "year": 1983,
        "category": "named",
        "symbol": "F"
    },
    "x-optimade-definition": {
        "label": "farad_si_1983_named",
        "kind": "unit",
        "format": "1.2",
        "version": "1.2.0",
        "name": "farad"
    }
}