meeter on määratud vaakumis leviva valguse kiiruse c fikseerimisega väärtusarvul 299 792 458 väljendatud ühiku m s-1 abil, kus sekund on määratletud tseesiumi sageduse ∆νCs alusel
Good to know
Meeter (tähis m) on SI pikkuse ühik ja samas on meeter ka SI põhiühik.
the metre is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m s-1, where the second is defined in terms of the caesium frequency ∆νCs
Good to know
The metre, symbol m, is the SI unit of length and is the base unit of the SI.
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