Luftdrahtverkürzung 



181 



Lyra 



-Verkürzungskondensator shorten- 

 ing condenser. -Verl ängerungs- 

 spule antenna load coil, aerial 

 loading inductance. 



Luft-druck air pressure, atmospheric 

 p., pneumatic pressure, -durch- 

 lässigkeit air permeability, a. 

 perviousness, -ei nschl uss air 

 cavity, a. bubble, a. occlusion. 



luftelektrische Störungen atmos- 

 pherics, statics. 



lüften ventilate, air, aerate- raise 

 or lift (clear of something). 



luftentziindl ich inflammable in con- 

 tact vtith air, pyrophoric. 



Lüfter ventilator, fan. 



Luftfahrt, Verkehrs- commercial avia- 

 tion, c. avigation. -hindern is 

 air navigation obstacle, aviga- 

 tional o. -navigation avigation, 

 aerial navigation. 



Luft-funkstel le aircraft radio sig- 

 nal station, -gebilde aerial 

 structure, radiating system. 

 -gleichstrom current of breath (in 

 sound recording), -gütemesser 

 eudiometer, -hahn air cock, 

 -kammer air pressure space (loud- 

 speaker), -kammerl autsprecher air- 

 chamber loudspeaker (c. coupling 

 diaphragm v»ith horn), -kern air 

 core, -kissen air cushion, dash- 

 pot, -kreis atmosphere. 



luftleerer Raum vacuum, vacuous 

 space, exhausted s. 



Luft-leerspannungssicherung vacuum 

 arrester, -lei tergebi I de aerial 

 extension, a. structure, -mast 

 ( "Schnorchel ") breathing mast, 

 underwater air intake (supplying 

 air, for Diesel engines, to sub- 

 merged submarines), -meer atmos- 

 phere. -Plattenspektroskop F'abry- 

 Ferot interferometer, etalon (when 

 not variable), -rahmen air-cored 

 frame (d.f.). -rei bungsverlust 

 windage loss, -sauger aspirator, 

 -säure carbonic acid, -schall 

 sound conducted or transmitted 

 through air. -schleier air fogging 

 (chemical action of air). 



-schraube, Versetz- variable-pitcn 

 (feathered) propeller or airscrew. 

 -schraubenstei gungsmesser propeller 

 pitch indicator, -schutzlei ter air 

 warden, -spule air-core coil, loop 

 or frame (d.f.). -strahl air jet. 

 -Strom, Gleich- direct flow of air, 

 d. c. air-flow, -strompendelung 

 air jet pendulation. -stromungs- 

 messer anemometer. -Verdichter air 

 condenser, a. compressor. -Verdün- 

 nung air rarefaction, vacuum. 

 -Verkehrskontrolle airways traffic 

 control, avigation regulation. 

 -welle sky wave, space w. , indirect 

 w. -wichte specific gravity of air. 

 -widerstand aerodynamic drag (on 

 airplane), -winkel angle of the 

 wind, -zutritt access of air, ad- 

 mission of a. 

 Lumiereplatte autochrome plate. 

 Lumineszenzlampe, Kathoden- cathode- 

 glow tube. 

 Luminophore phosphors, luminophors, 



luminescent substances. 

 Lummer-Brodhun'sches Photometer oder 

 i^ürfel L.-B. ccntrast (or total- 

 reflection) photometer, cube p. 

 (with cubical cavity). 

 Lunkerung shrinkage, contraction, 

 piping, blowhole formation, cavi- 

 tation (in metals). 

 Lupe, stark vergrossernde high-power 

 magnifier. Ablese- reading lens. 

 Einstell- focusing magnifier (lens). 

 Einzel- magnifier unit, individual 

 m. Fadenkreuz- reticle magnifying 

 lens. Feldstecher- fi^ld glass 

 magnifier. Fernseh- telescopic 

 magnifier. Präparier- dissecting 

 magnifier. Stativ- stand magni- 

 fier. 

 Lupen-aufTiahme, Kamera für Zeit- 

 camera for slow-motion picture 

 projection. -Ständer lens stand, 

 -verfahren, Zeit- high-speed shoot- 

 ing, low-speed projection method. 

 Luvwinkel drift angle, a. of lead. 

 l.W. (lichte weite) inside diameter, 



i. width, lumen. 

 Lyra lyre. 



