974 



Voltaic Electricity. Section 7; Induction Currents. 



No. 62444 



62 444. 1 : 5. 



62461. 1:4. 



62 448. I : .->. 



62 462. 1 : 4. 



62.444. 2 Induction Coils after Weinhold, Figure (W. D. Fig. 555 [528]), for the funda- 

 mental experiments on induction; can also be placed crosswise over each other; with 

 bar magnet 120 mm long and 12 mm thick 



62.445. - - i d e m, larger pattern 



io.oo7. Cylindrical Bar Magnet for above, 150 mm long, 10 mm thick 



62.447. Induction Coil (M. P. 9 th Edn. Ill, Fig. 732), with two different coloured wires wound 

 in parallel 



02.448. 2 Wire Coils (M. P. 9"' Edn. Ill, Fig. 729, Gan.-Man. Fig. 773; Gan.-Rein. Fig. 966), 

 for inserting one in the other, with bundle of iron wires as core, Figure . . . . 



62.449. Cylindrical Bar Magnet for above | 



62.450. Induction Coil with Interrupting Wheel, Figure | 



The :i|>|iar;itns consists of a largo wood reel wound with thin copper wire. The following fit into 

 this coil: ] solid soft iron core with suspension hook which can be screwed out; I iron wire bundle for 

 self-induction experiments; and 1 coil for mutual induction, wound with thick copper wire, into which 

 a thinner iron wire bundle fits. 



In addition an interrupting wheel is supplied for physiological effeci- 



02,15 i. Cylindrical Bar Magnet for above 



62,437. 2 Handles for above with flexible leads 



62,452. Interrupting Wheel alone, cf. Figure 62,450, to the right 



62.461. 2 Wire Coils for inserting one in the other, F i g n re. the inner one wound with 

 thick wire, with bundle of soft iron wire and with an interrupting wheel; the external 

 coil wound with fine wire; on base 



62.462. --idem, larger, Figure, mounted on wood board, with interrupting wlierl, 

 iron wire bundle, bar magnet, and two handles for physiological purposes 



62.463. 2 Induction Coils, F i g u r e, with iron bar, bar magnet, and membrane .... 



The primary wire coil, the magnet and the membrane are mounted on a carriage frame with rollers 

 so that they may be conveniently introduced into the secondary coil. 



The apparatus can be used at the same lime for explaining the telephone. 



( '1.6027, 2805, 

 2806. 2807. 



s. d. 



0. 16.0 



1. 0. 

 0. "2. I) 



0. 10.0 



0. IS. (I 



0. 2. 



1. Hi. I) 



0. 2. 

 0. ,S. o 



0. 12. 



1. 10. 



2. 0. 

 .">. 5. 



