metre, m (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/1960/base/metre
Definition name: metre

Unit name: metre
Latin symbol: m
Display symbol: m

Description: The metre, or meter, is the SI base unit of length defined in terms of the wavelength of the radiation for a specific transition in krypton 86 as redefined at the 11th CGPM Meeting in 1960.

"The metre is the length equal to 1650763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2pā‚ā‚€ and 5dā‚… of the krypton 86 atom." [11th CGPM meeting (1960), resolution 6] The metre was adopted into SI at the 11th CGPM Meeting in 1960, resolution 12.

Resources:

Formats: [JSON] [MD]

JSON definition:

{
    "$id": "https://schemas.optimade.org/defs/v1.2/units/si/1960/base/metre",
    "$schema": "https://schemas.optimade.org/meta/v1.2/optimade/physical_unit_definition.json",
    "title": "metre",
    "symbol": "m",
    "display-symbol": "m",
    "alternate-symbols": [
        "metre",
        "meter"
    ],
    "description": "The metre, or meter, is the SI base unit of length defined in terms of the wavelength of the radiation for a specific transition in krypton 86 as redefined at the 11th CGPM Meeting in 1960.\n\n\"The metre is the length equal to 1650763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2p\u2081\u2080 and 5d\u2085 of the krypton 86 atom.\" [11th CGPM meeting (1960), resolution 6]\nThe metre was adopted into SI at the 11th CGPM Meeting in 1960, resolution 12.",
    "resources": [
        {
            "relation": "Definition at the 11th CGPM meeting (1960), resolution 6.",
            "resource-id": "https://www.bipm.org/en/committees/cg/cgpm/11-1960/resolution-6"
        },
        {
            "relation": "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": "Wikipedia article describing the unit",
            "resource-id": "https://en.wikipedia.org/wiki/Metre"
        }
    ],
    "standard": {
        "name": "si",
        "year": 1960,
        "category": "base",
        "symbol": "m"
    },
    "x-optimade-definition": {
        "label": "metre_si_1960_base",
        "kind": "unit",
        "format": "1.2",
        "version": "1.2.0",
        "name": "metre"
    }
}