Gravitational waves have extremely long wavelengths.
Work Step by Step
Gravitational waves are the weakest waves ever observed, which means they have a low frequency and a long wavelength. This is stated on page 696.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.