No. 62047. 



Resistance of Electrolytes. 



929 



62 042. 1 : 8. 



inO 



62 046. 1 ; c>. 



<jj^ 



62 047. 1 : 6. 



02,041. Electrolytic Interrupter, after Wehnelt-Starke, Figure (Verb. d. Deutsch. Phys. 

 Ccsellsch. 1901, p. 128) .' .' . 



This interrupter is used as a silent exciter of pulsating currents for the determination of the re- 

 sistance of electrolytes in conjunction with a bridge and a telephone, for determining capacity constants, 

 etc. Owing to its high frequency the apparatus is well adapted for these purposes. 



A mean current density of 0.02 amp. is sufficient for working this interrupter. 



Resistance of Electrolytes. 



s. d. 

 0. 15. 



62.042. Apparatus after Horsford for Determining the Conducting Resistance of Liquids, 



F i g u ] e (M. P. Ill, Fig. 405), comprising "lass trough on wood board with conducting 



rods and throe pairs of copper, zinc and lead plates i 2. 0. 



62.043. -- idem, :<lso with two platinum electrodes 80x80 mm 4.10.0 



02. 0-14. Plate Glass Box for experiments on Conductor Resistance, after Kolbe (Kolbe-Skellon, 

 Introduction to Electricity. Part II, Figs. 120 122), with millimetre scale, cf. Fig. 60,747, 

 p. SJT. Without electrodes or partition wall 1. 0. 



02,045. - - i d c m , as >'o. 62,044, with 2 zinc plates (Kolbe-Skellon, Introduction to Electri- 

 city. I 'ait IT, Fig. 124), for use as a current damper and for demonstrating electrolytic 

 resistance I 1. 10. 



60,747. -- idem, with a zinc and a carbon plate (cf. Fig. 60,747, p. 847) 1.10.0 



60,748. -- idem, with partition and a pair of extra plates, Fig. 60,748, p. 847 



2. 0.0 



62,040. Apparatus for Electrolytic Conduction, after (Irimsehl, for showing that pure water 

 has a very high resistance and that only by the addition of a few drops of sulphuric 

 acid is the current rendered appreciably conductive. Figure 1. 12.0 



62,047. Apparatus for determining the Conductivity of Electrolytes, F i g u r e, after Friedr. i 



C. G. Miiller (M. T. Fig. 199), with one pair electrodes each of iron and of lead. . 0.18.0 



Cl. 2517,2479, 



5983, 4194. =.n 



