  We study the polarization-temperature correlations on the cosmic microwave
sky resulting from an initial scale invariant spectrum of tensor (gravity wave)
fluctuations, such as those which might arise during inflation. The correlation
function has the opposite sign to that for scalar fluctuations on large scales,
raising the possibility of a direct determination of whether the microwave
anisotropies have a significant tensor component. We briefly discuss the
important problem of estimating the expected foreground contamination.
