Röntgenbremsstrahl 



-bremsstrahl Röntgen rays 

 caused by collision and check- 

 ing, -dosismeter X-ray dosime- 

 ter, -einheit roentgen (inter- 

 national X-ray quantity unit); 

 Xu, X unit, Siegbahn u. (wave- 

 length), -messer roentgenmeter, 

 iontoquantimeter. -Photographie 

 röntgenograph, X-ray photograph, 

 skiagraph, -röhre mit 

 Heizkathode hot-cathode X-ray 

 tube, Coolidge t. -röhre, 

 fensterlose windowless X-ray 

 tube, -röhre, Hartwerden harden- 

 ing of X-ray tube (due to clean- 

 up and loss of vacuum). 

 -strahl enhartemesser penetrome- 

 ter, qualimeter. -Strahlenmesser 

 röntgenmeter, iontoquantimeter, 

 dose meter, dosimeter, iniensimeier, 



roentgen strahl en- undurchlässig 

 radiopaque. 



Rose,Kompass- card of compass, 

 scale of c. 



Rosettenbahn rosette-shaped path 

 (of electrons). 



Rost rust; grate, gridiron. 

 Etagen- step grate. 



Rostanfressung corrosion, honey 

 combing, pitting, tubercular or 

 channel-shaped corrosion. 



rösten calcine, roast, sinter. 



Rost-festigkeit corifesion resist- 

 ance, non-corrodibility. 

 -grubchen, -narbe pit. 



rostsicher non-corrodible, corro- 

 sion-resistant, rust-proof, 

 non-rusting. 



rot, hell- bright red, of bright- 

 red incandescence, kirsch- 

 cherry red, of cherry-red in- 

 candescence. 



Rotation, behinderte hindered or 

 inhibited rotation (of molecules). 



Rotations-bewegung rotational mo- 

 tion, rotary m. -gruppe, 

 räumliche space rotation group. 

 -korper body or solid of rota- 

 tion or revolution. 



rotationsparabolisch full-para- 

 bolic. 



238 Rückführung 



Rotat ions-quantenzahl rotational 

 quantum number, -schwi ngungsband 

 rotation vibration band. 

 -Schwingungsspektrum rotation 

 vibration spectrum. 



rotationssymmetrischer Körper 

 body presenting rotation sym- 

 metry. 



Rot-auszug red record (color 

 film), -bruch red-shortness 

 (of metal), -bruchversuch 

 hot breaking test. r-buchen- 

 hol z red beech. 



Rötel tonung russet toning, brown- 

 reddish t. 



rotempfindlich red sensitive. 



Rotglühhitze red heat (of in- 

 candescence) . 



rot i erend(er ) Dämpfer rotating 

 stabilizer (film feed). 

 -(e) Uml auf verschl ussbl ende 

 rotary flicker shutter, r. 

 light-cutoff. 



Rotorfunkenstrecke spark-gap 

 rotor. 



Rotterdammgerät radar. 



Rotverschiebung shift of spectral 

 lines toward red or longer 

 waves. 



Roul eauverschl uss roller blind 

 shutter. 



Ruck jerk, jolt, sudden shift or 

 motion, tug. 



Rückbewegung back stroke, return 

 s., retrogression, flyback (of 

 beam, telev. ) 



rückbilden form again, re-form. 



Rück-bi 1 dung back (reversible) 

 reaction, regression; re-forma- 

 tion, -dehnung damping capaci- 

 ty (of metals), -dreher, 

 Phasen- phase lagger, p. shifter. 

 -druck reaction pressure, back p, 



Rückenwind tail wind. 



Rück-f 1 ussdämpf ung structural re- 

 turn loss, -flusskühler reflex 

 condenser, return c, return- 

 flow cooler, -fuhrfeder re- 

 tractile spring, restoring s. 

 -f ührschnecke return screw con- 

 veyor, return worm, -führung 



