Noun
(organic chemistry) Initialism of polyvinyl fluoride.
(pathology) Abbreviation of post-viral fatigue.
Synonyms: PVFS, PVS
However, to figure out how long it took the photons and baryons to decouple, we need a measure of the width of the PVF. Source: Internet
The WMAP team finds that the PVF is greater than half of its maximal value (the "full width at half maximum", or FWHM) over an interval of 115,000 years. Source: Internet
The maximum of the PVF (the time when it is most likely that a given CMB photon last scattered) is known quite precisely. Source: Internet
This function is defined so that, denoting the PVF by P(t), the probability that a CMB photon last scattered between time t and t + dt is given by P(t) dt. Source: Internet