phasenverkehrt 



213 



Photometr ierung 



phasenverkehrt wirken act in reverse 

 polarity, act in opposite phases 

 or in p. opposition. 



Phasenverschiebung phase shift, p. 

 displacement, p. advancing (if 

 forward), dephased condition, 

 -von 90 Grad quadrature relation 

 of phases, -von 1 80 Grad 

 phase opposition. 



phasenverschoben dephased, out-of- 

 phase, in p. quadrature (when 90 

 degrees), in p. opposition (when 

 180 degrees). 



Phasen-verzerrung phase distortion. 

 -Verzögerung phase lag, p. delay, 

 -voreilung phase lead, p. ad- 

 vance, -vorschieber phase ad- 

 vancer, -welle phase wave, de 

 Broglie w., electron w. -winkel 

 impedance angle, phase a., im- 

 pedance factor, a factor, quality 

 factor. 



phasig, fal sch- misphased, dephased. 

 gleich- co-phasal, equi-phased, in 

 phase, richtig- true-phased, in 

 correct phase (relationship). 



Phonograph, L icht- sound track film 

 player (without pictorial accom- 

 paniment). 



Phonographen-drehpl atte turntable. 

 -platte phonograph disk, p. 

 record, -pi attentel 1 er turn- 

 table. 



Phoresezel le, Elektro- electro- 

 phoresis cell. 



Phosphore phosphors, luminescent 

 or fluorescent (screen or lamp) 

 materials. 



phosphoreszenzerzeugend phosphoro- 

 genic. 



Phosphorogene phosphorogens, ac- 

 tivating additions (promotive of 

 phosphorescence ) . 



photoelektr isch(e) Ausbeute, -(es) 

 Emissionsvermögen photo-electric 

 emissivity, p.-e. yield. 

 -(e) Schwellenfrequenz photo- 

 electric threshold frequency, 

 critical f. -(e) Wirkung photo- 

 electric-effect. Hertz e. -(e) 

 Zelle photo-electric cell, electric 



eye (either photo-conductive, p. 

 -voltaic or p. -emissive, though 

 the last-named should strictly be 

 called a photo-tube, a light-sensi- 

 tive tube or a photo-electric t. ) 



Photogramm photograph, photographic 

 record. 



Photographie, Kleinbild- microphotog- 

 raphy, photomicrography. 



photographisch festhalten record 

 photographically (on a record 

 sheet), 



photographisch(e) Dichtemessung 

 (photo)densitometry, photographic 

 density measurement, -(en) Sch I cht, 

 Bremsvermögen der stopping power 

 of phQtographic emulsion. 

 -(em) Zeichendruck, Telegraph mit 

 photo-printing telegraph. 



Photokathode photo-cathode, photo- 

 electric c. -»zusammenhängende 

 plain mirror or continuous (non- 

 mosaic) photo-cathode (of Parns- 

 worth dissector and superemitron ) . 

 -,Lichtst*ärkevertellung auf light 

 intensity distribution on photo- 

 cathode. 



Photokopie photostatic copy, photo- 

 graphic c, photoprint, photostat. 



Photometer, Bunsen-,Fettf leck- 

 Bunsen photometer, grease-spot p. , 

 with translucent central spot in 

 screen. Fl immer- flicker photome- 

 ter. Glelchheits- contrast photome- 

 ter, total-reflection p. Kontrast-, 

 mit WUrfel contrast photometer of 

 cube-type with cubical cavity. 

 Kugel- sphere photometer. Ul- 

 bricht integrating sphere. 

 Lummer-Brodhun- contrast 

 photometer, Lummer-Brodhun p. 

 (based on equality of illumina- 

 tion), spektral- spectrophotome- 

 ter. Topf- photometric integrator. 

 Ulbricht- sphere or globe photome- 

 ter of Ulbricht. WUrfel- 

 cube photometer, integrating p. 

 with cubical cavity. 



Photometer-aufsatz photometer head, 

 -schirm photometer screen. 



Photo-metr ierung photometric 



