Question

what is the advantage in choosing the wave length of a light radiation as a standard of length ?

Answer 1

Dear Student,

All the thing in this world are relative the only thing that is absolute is the light . The light provide a standard measurement technique by using its wavelength and its wavelength remain same as if we take other thing as the standard of measure the things varies but the wavelength will remain same for every place . In measurement we always use the standard base

Regards