Adverb of → optical.
→ optical + -ly.
Fr.: optiquement actif
Relating to → optical activity.
nurâné setabr, nurikâné ~
Fr.: optiquement épais
The qualifier of a medium in which the → optical depth is large, significantly larger than 1.
optically thick wind
bâd-e nurâné setabr
Fr.: vent optiquement épais
A wind with the → sonic point located at large optical depth for continuum. In particular, → Wolf-Rayet star winds are → optically thick. However, the outer parts of W-R winds are → optically thin for continuum, and in those regions the matter flow is driven by the same mechanism as in the winds of OB stars.
nurâné tonok, nurikâné ~
Fr.: optiquement mince
The qualifier of a medium in which the → optical depth is large, significantly smaller than 1.
optically violent variable (OVV) quasar
kuâsâr-e vartande-ye nurâné surâ
Fr.: quasar variable optiquement violent
A member of a small subset of quasars consisting of bright radio galaxies whose flux of visible light output can vary by as much as 50% in a single day.