Question

What units of measurement are used to describe wavelengths?

Answer 1

Wavelengths are lengths. They are measured in distances. The SI unit for length is the meter, but no one uses meters to describe wavelengths (normally wavelengths are much shorter than a meter). Centimeters is commonly used for radio, nanometers (10^-9 m) and angstroms (10^-10 m) are common for most other wavelengths.

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