Sicherhei tsl ampe 



267 



Signalpl atte 



-lampe safety lamp, s. light. 



sicherstellende Vorkehrungen pre- 

 ventive measures, precautions, 

 prevautionary steps. 



Sicherung, Grob- spark gap or similar 

 arrester. Lage- locking in posi- 

 tion. Luftleerspannungs- vacuum 

 arrester. 



Sicht visibility, sight. 



Sichtbarkeit, überschwel I i ge super- 

 threshold visibility. 



Sichtbarkeits-messer visibility 

 meter (e.g., Lukiesh-Taylor). 

 -schwelle threshold of visibility, 

 I. of vision. 



sichtbarmachen render visible or 

 visually perceptible, visualize, 

 indicate visually or optically. 



Sicht-messer visibility meter.. 

 -peil er visual or direct-reading 

 direction-finder, -weite direct- 

 sight range or distance, line of 

 sight, optical distance, -winkel 

 angle of sight. -Wirkung sifter 

 effect, sorting, classification. 

 -zi elf lug visual homing flight, 

 flight depending on visual indica- 

 tion or reading. 



Si eke reinforcing seam, crease or 

 pleat, r. fin (bent, pressed or 

 otherwise fashioned in metal sheet- 

 ing). 



Sieb filter, network; sieve, screen, 

 bolter, strainer. Amplituden- 

 amplitude filter, a. discrimination 

 selector. 



siebeneckig heptagonal. 



Siebenelektrodenröhre heptode. 



si ebenwert ig heptavalent. 



Siebgebilde selective system, filter 

 means, network. 



Siebkette ladder-type filter, band- 

 pass f. or transmission network. 

 -, mehrgl iedri ge multi-mesh filter, 

 multi-section f. -von grosser Loch- 

 weite broad-band filter. 



Sieblochbrei te,Frequen z- transmission 

 band, transmitted b., b. -width of 

 filter, spacing between cut-off 

 points. 



Siebschale dish wiih perforated 

 botiom. 



Siebsteilheit sharpness of selective 

 network. 



Siebung screening, shielding; sifting, 

 straining, filtering, sorting, bolt- 

 ing, classifying. 



Siebwiderstand contact resistance (of 

 barrier cell). 



Si ede-er leichterer boil adjuvant. 

 -kolben boiling flask, -kühlung, 

 Kathode mit vapor-cooled cathode. 

 -messer, Wasser- hypsometer. 



Si eke reinforcing seam, pleat, 

 crease or fin (bent, pressed or 

 otherwise' fashioned in metal sheet). 



Siemenseinheit (S.E.) Siemens unit 

 (of resistance). 



Signal »tönendes tonal signal, musical 

 spark s. 



Signal , Abschattierungsstor- spurious 

 signal, shading s. (in iconoscope 

 operation, known also as "shading," 

 "black spot," "tilt and bend," etc. ) 

 Bild- video signal, picture s. 

 Drehlicht- revolving beacon. 

 Entwarnungs- all-clear signal. 

 Fernseh- video signal, television s. 

 Freigabe- clearance signal. 

 Gleichlauf- synchronizing signal, 

 sync impulse; tripping s. Haupt- 

 inner marker signal, main entrance 

 s. (airport). Kenn- tuning note 

 (characteristic audio signal or note 

 for tuning). Misch- signal spectrum 

 (comprising video and sync impulses). 

 Not- distress signal, SOS s. , mayday 

 (radio telephone). Nutz- intelli- 

 gence signal, s. conveying informa- 

 tion. Stör- shadowing signal, shad- 

 ow s., spurious s. (iconoscope opera- 

 tion); jamming signal, interference 

 s. Synchronisier- synchronizing 

 signal, sync impulse, tripping s. 

 Vor- caution signal, warning s. , 

 first or outer marker s. (airport). 

 Warn- alarm signal, caution s., 

 alert, raid alarm. 

 Signal-horn bugle, -lampe signal 

 lamp, telltale 1. -1 ampentafel 

 signal lamp or annunciator board 

 or panel, -mittel signaling means, 

 communication m. -pfeife siren, 

 whistle, -platte signal plate (of 



