Wavelength

What Jansky had observed was the 14.6m wavelength radio wave from the Milky Way's core.

In that word is included the meaning of matching up to somebody's particular wavelength.

Tom and Mary are on the same wavelength.

Tom and Mary were on the same wavelength.

I guess we're not on the same wavelength.

The doppler shift is a shift in an object's spectrum due to a change in the wavelength of light that occurs when an object is moving toward or away from Earth.

Violet light has a shorter wavelength than red light.

What is the light's wavelength?

I really feel like we're on the same wavelength.

Tom and I are on the same wavelength.

I'd take requests on the telephone / I'm on a wavelength far from home

I think you and I are on a different wavelength.