Kõige sagedamini kasutatake pikkuse mõõtmiseks joonlauadu ja mõõdulinte, millele järgnevad ajalisi ja valguse kiiruse mõõteprintsiipe kasutavad mõõtevahendid.
The length measurement most commonly used approaches are the rulers, followed by transit-time methods and the interferometer methods based upon the speed of light.
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