"266. 



Noack's Apparatus for the Study of Potential. 



809 



60261, 60268, 60269, 60271, 60274, 60275. 1 : 10. 



60262. 1 : 16. 



v 



I 



60 263 60 265, 60 267. 1:16. 



60266,60274. 1:16. 



Noack's Apparatus for the Study of Potential. 



(Ztschr. f. d. phys. u. chem. U. 6, 1892/93, p. 221.) 



(10,196. Aluminium Electrometer (Kolbe's), Fig.' 60,196, p. 802 (Kolbe-Skellon, Introduction 

 to Electricity, Part I, Fig. 15), with calibrated projection scale and amber tube in j 

 ebonite plug, 1 ball 10 mm in diameter, 2 condenser plates (varnished) with ebonite 

 handle, 1 extra ebonite plug with amber tube, conductor rod and paper leaf .... 



Zamboni Pile (Elster and Geitel's), modified by Noack, of gold and silver paper with inlaid 

 brass discs with projecting tongues, for taking off a divided potential also 



List No. 60,255 60,256 



No. of pairs of plates 1000 2000 



Diameter of plates mm 28 28 



1. 0. 1. 7. 



s. d. 



60.257. Electrometer (Bohnenberger's) 



60.258. Water Battery, F i g u r e, with 144 copper-zinc cells in ebonite frame 

 60,222. Odstrcil's Apparatus, F i g. 60,222, p. 804, proving Coulomb's Law . . 



60.260. 2 Small Electroscopes 



60.261. Sheet Iron Tube, 30 cm length of side, Figure 



60.262. 2 Sheet Brass Hollow Cylinders, F i g u r e, 50 cm long, 20 cm diameter, open at 

 both ends, one of which can be closed by a lid, on ebonite pillar with iron base . . 



60.263. Sheet Brass Hollow Cylinder, Figure, 20 cm long, 8 cm diameter, with carrier 

 bent at right angles on iron base 



60.264. Insulating Table, of ebonite, F i g u r e, 20 cm diameter, with ebonite pillar 50 cm 

 high, on iron base . . . . 



60,265. Paraffin Plate, Figure, 20 cm diameter, 5 cm thick 



3. 0. 



tio.'j(>6. 2 Fixed Sounders, with ebonite pillar and porcelain base, Figure, with solid balls 

 of 2 cm and hollow cylinders of 6 cm . 



2. 15. 

 3. 0. 

 3.10. 

 1. 13. 

 0. 5. 



2. .5. 

 0.12.0 



0.12.0 

 0. 4.6 



0. 10. 



Cl. 2102, 2103, 

 2104, 2105. 



