1, 2) osnehâdan; 2) nur dâdan (#)
1) To reveal, make known, make visible.
M.E. exposen, from O.Fr. exposer "lay open, set forth," from L. exponere "set forth, lay open, exhibit," with contamination from poser "to lay, place" (→ position). doublet of expound.
1) Osnehâdan, from os-, → ex-,
+ nehâdan "to put, place," → position.
To expose a detector to too much photons, resulting in saturation.