What is the SI unit for wavelength?

Answer 1

Wavelength is a length. As such, any unit of length is suitable as a description

of wavelength. The SI unit of length is the meter. Along with its multiples and

sub-multiples, the meter is a dandy unit of wavelength.

Answer 2

The SI unit for wavelength is meters (m). The electromagnetic spectrum ranges from kilometers (km, 10^3 meters), which would be the high end of the spectrum for radio waves, to picometers (pm, 10^-12 meters), which would be gamma rays. Visible light falls within the 400 nm (violet) to 750 nm (red) range, with the other colors transitioning in between as found in a rainbow.

Note: A common misconception is that the SI unit for wavelength is Hz, which is actually a measurement of frequency, not of wavelength. Frequency has an inverse relationship with wavelength.

Answer 3

A wavelength is a length, so it should be measured in meters. Of course, because of the tiny wavelengths of some waves, it is often measured in millimeters, micrometers, or nanometers. For example, visible light has wavelengths of roughly 350-700 nm.

Answer 4

Use of the interferometer to define the metre is based upon the relation:

where λ is the determined wavelength; c is the speed of light in ideal vacuum; n is the refractive index of the medium in which the measurement is made; and f is the frequency of the source. In this way the length is related to one of the most accurate measurements available: frequency.

Answer 5

Wavelength is a length. Any unit of length can be used to describe wavelength.

You're free to pick any one that fits the wavelengths you're working with.

Here are a few choices:

-- mile

-- furlong

-- yard

-- foot

-- inch

-- Ångstrøm

-- nanometer

-- millimeter

-- centimeter

-- meter

-- kilometer

-- parsec

Answer 6

there are no units for wavelength

but wavelength frequency is in hertz

Answer 7

Obviously a unit of length will be used, either the meter, or a multiple (kilometer) or submultiple (millimeter, nanometer, etc.).

Answer 8

meter