Question

define metre in terms of wavelength of light​

Answer 1

Answer:

The metre is defined as the length of the path travelled by light in a vacuum in 1299 792 458 of a second. ... In 1960, the metre was redefined in terms of a certain number of wavelengths of a certain emission line of krypton-86.

Answer 2

Answer:

Explanation:

The metre is defined as the length of the path travelled by light in a vacuum in 1299 792 458 of a second.

In 1960, the metre was redefined in terms of a certain number of wavelengths of a certain emission line of krypton-86