Original sentence: --ScienceApologist 20:43, 14 December 2005 (UTC).Quasars have subsequently been found to be the distant cores of AGN and thus the Wolf Effect is not seen as a major component in the redshift of quasars by the vast majority of astrophysicists.The Wolf Effect (sometimes Wolf shift) was a frequency shift in the electromagnetic spectrum predicted by Emil Wolf in 1987  and subsequently confirmed in the laboratory by Dean Faklis and George Morris in 1988.The effect has been regarded by a small number of reseasrchers as being possibly significant in the spectra of quasars.Under certain conditions, the shift may be distortion free, Wolf and James write:.Wolf has gone as far as to advocate the effect as a non-cosmological redshift, apparently a reference to the controversies surrounding the nature of quasars that occurred in the 1970s where certain astronomers believed that quasars were local and others believed that quasars were at cosmological distances
Edited sentence: The Wolf Effect (sometimes Wolf shift) is a phenomenon in radiation physics that manifests itself as a redshift or blueshift in the electromagnetic spectrum.The effect was predicted by Emil Wolf in 1987 , which he called a non-cosmological redshift.The effect was subsequently confirmed in the laboratory by Dean Faklis and George Morris in 1988.Under certain conditions, the Wolf Effect may also produce a distortion-free Doppler-like redshift, Wolf and James write: