In article ,
Yousuf Khan writes:
What do the E- and B-mode polarizations mean anyway?

They describe the pattern of polarization seen on the sky. One of
the references I gave earlier shows examples, and a web search will
find others.

In principle, either pattern can have any wavelength; the wavelengths
and patterns depend on what physical process caused the polarization.
So far as we know now, only inflation can create B-mode patterns.

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