becquerel, Bq (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/1975/named/becquerel
Definition name: becquerel

Unit name: becquerel
Latin symbol: Bq
Display symbol: Bq

Description: A derived SI unit for radioactivity, defined as s⁻¹ using the 1967 SI second, defined at the 15th CGPM Meeting in 1975.

"The 15th Conférence Générale des Poids et Mesures, [...] adopts the following special name for the SI unit of activity: becquerel, symbol Bq, equal to one reciprocal second." [15th CGPM Meeting (1975)]

Resources:

Formats: [JSON] [MD]

JSON definition:

{
    "$id": "https://schemas.optimade.org/defs/v1.2/units/si/1975/named/becquerel",
    "$schema": "https://schemas.optimade.org/meta/v1.2/optimade/physical_unit_definition.json",
    "title": "becquerel",
    "symbol": "Bq",
    "display-symbol": "Bq",
    "description": "A derived SI unit for radioactivity, defined as s\u207b\u00b9 using the 1967 SI second, defined at the 15th CGPM Meeting in 1975.\n\n\"The 15th Conf\u00e9rence G\u00e9n\u00e9rale des Poids et Mesures, [...] adopts the following special name for the SI unit of activity: becquerel, symbol Bq, equal to one reciprocal second.\" [15th CGPM Meeting (1975)]",
    "resources": [
        {
            "relation": "Definition at the 15th CGPM Meeting (1975)",
            "resource-id": "https://www.bipm.org/en/committees/cg/cgpm/15-1975"
        },
        {
            "relation": "Wikipedia article describing the unit",
            "resource-id": "https://en.wikipedia.org/wiki/Becquerel"
        }
    ],
    "defining-relation": {
        "base-units": [
            {
                "symbol": "s",
                "id": "https://schemas.optimade.org/defs/v1.2/units/si/1967/base/second"
            }
        ],
        "base-units-expression": "s^-1"
    },
    "standard": {
        "name": "si",
        "year": 1975,
        "category": "named",
        "symbol": "Bq"
    },
    "x-optimade-definition": {
        "label": "becquerel_si_1975_named",
        "kind": "unit",
        "format": "1.2",
        "version": "1.2.0",
        "name": "becquerel"
    }
}