{"constantId":"SpeedOfLight","label":"speed of light","shortLabel":"SpeedOfLight","symbol":"$c$","value":2.99792458E8,"valueStr":"299 792 458","unit":"https://si-digital-framework.org/SI/units/metre.second-1","strExpression":"m . s^-1","pid":"https://si-digital-framework.org/constants/SpeedOfLight","resolutionLink":"https://doi.org/10.59161/cgpm1975res2e","resNbr":"2","resolutionType":"Resolution","eventName":"15th meeting of the CGPM","eventDate":"1975-06-03","updateDate":"1975-06-03"}