Fi Iterlochlage 



96 



flächenartig 



unit, -loch läge position of trans- 

 mission range, -massenwiderstand 

 inertance (of mechanical filter). 

 -Steilheit sharpness (of cut-off) 

 of selecting network, slope. 



Filz-Kufe felt pad. -unterl agscheibe 

 felt washer. 



Finger, Kontakt- contact finger, 

 wiper. 



Finger-anschl ag finger stop (of 

 dial switch), -bildner digi- 

 torium (for piano practicing). 

 -hut( ioni sierungs)ka(rnier thiirble 

 ionizing chamber, -regel, Drei- 

 nght-nand rule, thumb rule, 

 Fleming's r. - sehe i be dial 

 switch, finger disk or wheel. 



Fi sch-bauchantenne fish-belly 

 antenna (mast antenna in which 

 maximum cross-section and mini- 

 mum characteristic impedance lie 

 in the middle), -schwanzbrenner 

 bat's wing burner, fishtail b. 



Fis-Klappe F sharp key. 



Fi xier-f li/ssi gkeit fixing liquid, 

 f. liquor, -mittel fixative, 

 fixing agent, -natron sodium 

 hyposulfite, sodium thiosulfate, 

 "hypo", -salz fixing salt. 



fixierter Kathodenfleck des Queck- 

 silberlichtbogens anchored spot 

 of mercury arc. 



flach flat, without contrast, with 

 low gamima t picture); flat, flat- 

 topped (curve, e.g., in broad 

 tuning). 



flach werden level off, flatten 

 out, slope, become less steep, 

 be smoothed. 



Flachdruck lithoprinting. 



Fläche surface, face, facet, plane, 

 area, zone, plain, level, sheet, 

 flatness. 



Fläche, cartesische Cartesian sur- 

 face, -.deformierte deformed or 

 figured surface. - konstanten 

 Potentials äquipotential surface, 

 isopotential s. 



Fläche, Abstrahl- radiation surface, 

 radiant s. , reflecting s. , pro- 



jector s. (loudsp. ). Abstumpfungs- 

 truncated face (cr. ). Ausgleich-, 

 der Erdkruste isostatic surface 

 (of earth). Äquipotential- iso- 

 potential or equi-p. surface or 

 plane, l^ild- image area, picture 

 field; image plane (opt.). Brenn- 

 caustic surface (geometry). Emp- 

 fänger- radiation sensitive sur- 

 face; record sheet. Gleit- glide 

 plane, slip p. (cryst.), sliding 

 surface, slide. Grenz- interface, 

 boundary layer, surface of con- 

 tact. Grund- basal surface, base, 

 area. Ketten- catenoid. Knoten- 

 nodal surface, n. plane (opt. ). 

 Kristall- crystal face, c. plane. 

 Leit- deflection vane (in Idspk. 

 horn, to reduce directional prop- 

 erty), labyrinth, baffle. Licht- 

 vertei lungs- isophote, isolux 

 diagram, luminosity or isophotic 

 surface or curve, iseben- second- 

 ary face. Niveau- level, surface, 

 equipotential s. , isopotential s. 

 Potential-, konstante equipoten- 

 tial or isopotential surface. 

 Prismen- prismatic surface, p. 

 face. Rückstrahl brenn- catacaus- 

 tic (surface). Schärfen- surface 

 of sharp or distinct vision. 

 Schiebungs- slip plane (cryst.). 

 Spalt- cleavage plane, c. face 

 (cryst.). Stirn- end face, face, 

 front surface. Strahl (ungs)- 

 emitting surface, emitter area 

 (electrons), radiator surface, 

 radiant surface. Translations- 

 translation plane, slip p. 

 Trennungs- cleavage plane, part- 

 ing p., surface of separation. 

 Wellen-, Fresnel ' sehe Fresnel 

 zone (of half-period elements). 



Fl ächen- aber rat ion-, -abweichung 

 zonal aberration (opt.), -antenne 

 sheet antenna, -anziehung sur- 

 face attraction, adhesion, ad- 

 sorption. 



flächenartige Strombatin (cf flä- 

 chenhaft) current sheet, laminar 



