Fr.: diaphragme d'ouverture
The diaphragm that limits the diameter of the axial light bundle allowed to pass through a lens.
Fr.: diaphragme de champ
A diaphragm located at an image plane of an optical system that determines the size and shape of the image. → aperture stop.
1) bâzdâštan; bâzdâšt (#); 2) daricé; (#)
1) To hinder or prevent the passage of. → stopping power.
M.E. stoppen (v.), O.E. -stoppian (in forstoppian "to stop up, stifle"); V.L. *stuppare "to stop or stuff with tow or oakum" (cf. It. stoppare, Fr. étouper "to stop with tow"), from L. stuppa "coarse part of flax, tow."
1) Bâzdâštan, bâzdâšt- "to stop, restrain, inhibit, coerce, detain,"
from bâz-, → re-, + dâštan
"to have, hold, maintain, possess," → access.
Fr.: rapport focal
Same as → focal ratio.
Fr.: pouvoir d'arrêt
A quantity indicating the extent with which a substance absorbs a → charged particle passing through it. It is the energy lost by a → non-relativistic particle per unit length of its path in the substance.
Fr.: mot vide
Computers: A very commonly used word that is normally excluded by computer search engines. Stopwords have very little informational content, such as: and, the, of, it, as, may, that, a, an, of, off, etc.
Rahâ-vâž, literally "free word," from rahâ "free, set free" (O.Pers. rad- "to leave," Skt. rah-, rahati "separates, leaves," Av. razah- "isolation;" PIE *redh-) + vâž, vâžé, → word. Fekan-vâž, literally "dropped word," from fekan present stem of fekandan, afkandan "to throw, cast away;" Mid.Pers. abgandan "to throw;" O.Pers. avakan- "to throw, place on," from Proto-Iranian *kan- "to throw, place, put."