An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

Two apertures where opaque and transparent areas are inverted. If A is an aperture that has some opaque areas and some transparent ones, the complementary pattern A' is the pattern in which exactly the opposite areas are opaque and transparent. Thus, the complimentary screen of a single slit is a wire of the same size, and the complementary screen of a circular opening is a dot. A better term would be → complementary apertures.

→ complementary; → screen.

1) A large, usually flat surface onto which an image is projected for viewing.
2) The portion of a computer terminal or monitor upon which information is displayed.

M.E. screne; O.Fr. escren "a screen against heat," from M.Du. scherm "screen, cover," or Frank. *skrank "barrier;" cf. O.H.G. skirm, skerm "protection," scrank "barrier;" Ger. Schrank "cupboard."

Pardé, from Mid.Pers. pardag "curtain, veil, covering;" loaned in Armenian partak "veil," and Georgian p'ardag-i "curtain;" cognate with Gk. pelas, pella, L. pellis "skin;" O.E. filmen "thin skin;" PIE root *pel- "to cover."

A character used for on-screen → display. See also → printer font.

→ screen; → font.

The → Coulomb interaction reduced owing to the presence of other electrons. See → shielding effect.

→ screen; → coulomb; → interaction.

Same as → shielding effect.

→ screen; → effect.