D Wert quadrantal error due to air- 

 plane fuselage, etc. 



Dach-kapazi tat top (loading) capaci- 

 ty, -kohle upper coal. 



d'Alembert'sche Wellengleichung 

 d'Alembertian wave equation. 



Damm margin or narrow strip of mat- 

 erial between adjacent tracks 

 or grooves of phonograph disks, 

 barrier, land. 



Dammar harz Dammar resin or gum. 



d'ammen stop up, dam up, curb. 



D*ämmerungs-effekt night effect. 

 -Schalter twilight switch. 



Diammung, Schall- sound reduction 

 or attenuation, s. deadening or 

 absorption, silencing (of noise). 



D'ammzahl, Schall- sound transmission 

 characteristic. 



Dampf, direkter live steam. 

 -.indirekter latent steam. 



Dampf-auflosung volatilization. 

 -blase bubble of vapor or steam; 

 steam-heated still. 



dampfdicht steam tight, vapor tight. 



Dampf-dichtemesser dasymeter. 

 -dichtung steam packing, -druck- 

 messer manometer, steam gage, 

 tensimeter. -druckziinder vapor- 

 pressure igniter. 



dampfecht fast to steam. 



d'ampfen attenuate, damp (out), dis- 

 sipate, absorb (sound in air, 

 etc.); muffle, deaden, silence, 

 quench, die away, decay, mute 

 (mus. instnument). 



dämpfend, schall- sound absorbing, 

 s. attenuating, s. damping or' 

 deadening. 



Dämpfer mute (in string instrument), 

 damper (of piano). -, rotierender 

 rotary stabilizer (film feed). 

 Licht- silk, light softener (m.p. ). 



Schall- silencer, muffler, sound 

 absorber, gobo (sound absorbing 

 sheet) (m.p.). 



D'ampferwickl ung amortisseur winding, 

 damping w. 



Dampf-hiille steam jacket; vaporous 

 envelope or sheath, vapor shroud, 

 -hunger steam avidity, -kolben 

 steam piston. 



Dampflampe, Quecksi 1 ber-,mi t Hei z- 

 kathode phanotron, tungar tube 

 (with argon fillingj. -, Queck- 

 silber, mit Steuerelektrode 

 mercury -vapor tube with control 

 grid (of thyratron, ignitron, 

 etc., type). 



Dampf-messer manometer, steam gage, 

 tensimeter. -schale evaporating 

 dish or basin. 



D'ampfung attenuation, damping, loss 

 (of energy), dissipation, drop; 

 impedance. -,ki I ometri sehe at- 

 tenuation per kilometer of line. 

 -,mechani sehe mechanical resist- 

 ance, m. impedance. 



Dämpfung, Ableitungs- leakance loss. 

 Bezugs- volume loss, v. equivalent. 

 Fehler- balance attenuation, re- 

 turn loss, Fl'üssigkei ts- liquid 

 or fluid damping or cushioning, 

 dashpot action. Kenn- iterative 

 attenuation constant. Klirr- 

 correction of non-linear harmonic 

 distortion. Leitungs- line loss, 

 1. dissipation, 1. attenuation. 

 Nebensprech- crosstalk transmis- 

 sion equivalent, c. attenuation. 

 Nutz- damping resulting in use- 

 ful radiation or signal power, 

 effective transmission equivalent. 

 Öl- oil damping means (re: sound 

 recording vibrators); oil dashpot. 

 Pseudo- loss of selectivity by 



