Freiheitsgrad 



102 



Frequenz, Trenn- 



Frei heitsgrad degree of freedom. 

 -zahl variance (of a system). 



Frei 1 auf- bremse free-wheeling 

 brake, coaster b. -kupplung 

 free-wheel clutch, slip 

 coupling. 



Frei-1 ichtaufnahpe outdoor or ex- 

 terior shooting or shot. 

 -1 uftdurchf (ihrung open-air wall- 

 duct, leadin out- door bushing 

 (insulator). -1 ufti sol ator out- 

 door insulator, -schwinger free 

 radiator (loudspeaker). 



freitragend self-supporting, s. 

 -supported. 



Fremdbestandteil foreign, ex- 

 traneous or external matter, 

 material or substance. 



fremderregt (er) Magnet electro- 

 magnet, non-permanent m. 

 -(er) Schwingröhre, -(er) Sender 

 master-excited oscillator or 

 transmitter. 



Fremd-erregung separate excitation. 

 -gas foreign gas. 



fremdgesteuerte Steuerstufe 

 crystal-stabilized master stage. 

 -unselbständige Kippmethode dis- 

 tant-operated non-self-running . 

 time-base method. 



Fremd-korper foreign or extraneous 

 body or substance, -licht- 

 Lichtmodul ator light relay of 

 Kerr cell or Karolus c. type 

 (to re-convert currents into 

 brightness variations with con- 

 stant, independent ray source). 

 -peilung ground direction-finding 

 (bearing or directional data 

 supplied to airplane from ground 

 stations), -schichtverfahren 

 self-luminous or s. -emissive 

 method (using electrons on sur- 

 face of object, in electron 

 microscope), -töne alien fre- 

 quencies or tones (in sound 

 reproduction). 



Frequenz, mittlere medium frequency, 

 mid frequency. 



-,technische commercial frequency, 

 industrial f. 

 Frequenz, Abschneide- cut-off 

 frequency, critical f. Abtast- 

 scan frequency (= lines x frame 

 frequency per second). 

 Beruh igungs- no-flicker frequency, 

 fusion or critical f. (m. p. ). 

 Blld- picture frequency, frame 

 f., videb f., visual f. Differenz- 

 difference frequency. Durchdrin- 

 gungs- penetration frequency, 

 critical f. Durchgangs- pass wave, 

 p. frequency. Ecken- corner 

 frequency, sharp cut-off fre- 

 quency (of a filter, etc.). 

 Einheits- standard frequency. 

 Grenz- cut-off frequency, limit- 

 ing f. Gruppen- group frequency 

 (number of wave trains per sec- 

 ond), spark f. Hilfs-, Rückkop- 

 plung mit super -regeneration. 

 Kreis- pulsatance, angular vel- 

 ocity, cyclic frequency, fre- 

 quency in radians (oo). Leitkreis- 

 transit-time frequency (magnet- 

 ron). Mittel- medium-wave fre- 

 quency, mid freq. Mutter- master 

 frequency. Null- frequency at 

 which phase shift is zero. 

 Pendel- electron oscillation 

 frequency; quench or bias f. 

 furnished from auxiliary os- 

 cillator circuit (in super- 

 regeneration). Raster-, Raster- 

 wechsel- field frequency (in 

 interlaced scanning). Resonanz- 

 resonance frequency, natural f. 

 Schwankungs- frequency flutter. 

 Schwellen- threshold or critical 

 frequency, photo-electric 

 threshold,. Seiten- side fre- 

 quency (one of sum or differ- 

 ence frequencies). Spiegel- 

 image frequency. Sprech- voice 

 frequency, speech f. Steuer- 

 pilot or synchronizing frequency. 

 Summen- summation frequency, sum f. 

 Teil- component frequency. Trenn- 



