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:
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"
}
}