560 



Paalzow Optical Benches. 



No. 5464S 



54 653. 1 : 3. 



1234 



A 



54654. 1:4. 



54655. 1:1. 



t 54,648. 2 Double-refracting Prisms 

 20 mm diameter, in one mount 

 with haft 



t 54,649. -- 13.5 mm diameter, Fi- 

 gure 54,635 b (P) and 54,635 d 

 (P) 



t 54,628. Complete Soleil Wedge Com- 

 pensation 



1 54,650. Right- and Left-rotating 

 quartz plate, mounted in cork 



For large 



Paalzow 



Bench 



No. 54,631 



For small 



Paalzow 



Bench 



No. 51,635 



s. d. 



3. 10. 



2. 5. 

 6. 10. 6. 10. 



0. 15. 



15. 



1 54,651. Small Window, half red, 

 half blue glass 



t 54,652. Nicol with sharp edges for 

 making the Lippich polariser, 

 with suitable mount for the 

 wedge compensation .... 



1 54,653. Observation Tube, with 

 haft, Figure, for filling 

 with rotating solutions . . . 



For large 



Paalzow 



Benth 



No. 54,634 





 0. 



d. 

 



For small 



Paalzow 



Bench 



No, 64,885 



s. d. 

 . 7. 



1. 5. 1. 5. 



0. 18. 0. 18. 



Polarisation Apparatus for the Paalzow Optical Bench. 



s. d. 

 t 54,654. 8 Rapidly Annealed Glasses of different 



shapes, Figure 2. 10. 



t 54,655. 2 Crossed, Annealed Glasses in cork 



mount, Figure 0. 10. 



1 54,656. Rock Crystal 0. 6. 



t 54,657. Aragonite 0. 8. 



1 54,658. Calc-spar 0. 6. 



t 54,659. Gypsum with movable hyperbolae . . 

 t 54,660. 2 Gypsum Plates for complementary 



colours, mounted in cork. Each 0. 3. 6 



t 54,661. idem, V 4 wave length. Each 0.4.0 



t 54,662. 2 Gypsum Figures, star and butterfly 



Further preparations listed on pp. 564 



to 567. 



s. d. 

 0. 7. 



0. 7. 



0. 8. 



1. 10. 



Auxiliary Apparatus for Experiments on Spectrum Phenomena, Fig. 54 635 e. 



t 50,986. Adjustable Gap, with micrometer screw, s. d. 



Fig. 54,635 e (F) and 50,986, p. 176, with 



round screen and haft 1. 8. 



50,988a. idem, with iris diaphragm . . 2. 16. 

 t 54,663. Cylinder Lens with screen and haft . 0. 15. 

 f 50,982. Collimator Lens with diaphragm and 



haft, Fig. 54,635 e (C) 0. 18. 



54,664. Flint Glass Prism, 27 mm high ... 0. 10. 

 1 54,022. Wernicke's Liquid Prism, 20 mm 



aperture 2. 15. 



54.028. idem, built round, can be taken 



apart for cleaning, 30 mm 5. 0. 



54.029. Direct-vision Prism after Koenigs- 



berger, 25 mm aperture 1. 10. 



Liquid Prisms and Direct- vision Prisms (com- 

 pound): see Nos. 54,022/059, p. 502. 



54,042. Direct-vision Prisms, consisting of s. d. 

 2 crown glass and 1 flint glass prism, 

 20 mm high, without mount 2. 0. 



54,052. idem, consisting of 3 crown glass 

 and 2 flint glass prisms, 38 mm side, 

 180 mm long, without mount, for placing 



on stage No. 54,665 8. 0. o 



f 54,665. Stage for preceding prisms, with rotary 



plate and haft 0. 10. 



54,666. Direct - vision compound Prism as 

 No. 54,052, quintuple, 38 mm side, hi 

 mount with haft, Fig. 54,635e (D) . . . 9.10 

 t 54, 180. Absorption Box, Fig. 54,180, p. 516, 



55 x 35 x 10 mm inside 0. 3. 



Auxiliary Apparatus for Experiments on Microscopic Phenomena, Fig. 54 635 f. 



1 51,048. Projection Microscope, Fig. 54,635f s. d. 

 (M) and 51,048, p. 183, with object holder, 

 rack and fine motion and condenser lens, 

 without objective 4. 0. 



Objectives for above: see Nos. 51,049 51,i>.~>3. 

 t Collection of Microscopical Specimens for School 

 Use: see Nos. 51,062 and 51.O63. p. 184. 



Auxiliary Apparatus for Experiments on Interference and Diffraction 



for the large Optical Bench No. 54634. 



54,668. Complete Installation for Interference s. d. 

 and Diffraction Experiments, I-'ig. r>4..y<p I',. 

 p. 547, comprising: 1 cylinder lens, 1 inter- 

 ference prism, 1 ocular micrometer (Fres- 

 nel's). Fig. 54,525, for measuring wave 

 lenjit h, with red observation glass, 1 doubly 

 adjustable, rotary micrometer gap, Irotary 



The items marked t are absolutely neces>aiv 

 for carrying out I lie experiments. 



gap with screw adjustment, 1 rotary . 

 double grating on glass, 3 screens for 



taking 12 diaphragms IS. o. 



lie the construction of the diaphragm^ 

 supplied and of (lit- phenomena obtained 

 by t lie same, flirt her part iciilars will be loutxi 

 in the optical bench for interference and 



rl. 5276. 295. 298. 



