950 



Voltaic Electricity. Section 6: Electro-magnetism and Electro-dynamics. 



No. 62 204 



62 264. 1 : 6. 



62 265. 1 : 0. 



62 266. 1 : 5. 



62268. 1:7. 



62 269 72. 1 : 8. 



62 273. 1 : 6. 



62.264. Apparatus for Deflecting the Magnetic Needle by the Electric Current, F i g u r e, 

 comprising a voltaic cell, a brass stirrup and a magnetic needle on stand 0. Hi. n 



62.265. Current Conductor for Experiments on the Deflection of the Magnetic Needle by the 

 Electric Current, after Kolbe, Figure (Kolbe-Skellon, Introduction to Electricity, 



Part II, Fig. 105) 0. s. n 



Suitable Magnetic Needles and Stands for above: see Nos. 00,043 60,046 and 60,058, p. 786. 



Electromagnets. 



Unless stated to the contrary, the Electromagnets are provided with a winding of thick wire 

 for connecting up with Bunsen Cells or Accumulators. 



62,266. Magnetising Spiral, Figure (M. P., 9 th Edn., Ill, Fig. 517), wood reel wound 



with wire '2 mm thick, with iron core which can be drawn out 0. Hi. u 



<;_'. 267. idem, smaller and wound with wire 1 nun thick 0. lo. o 



62,268. Iron Bar on Stand and 2 Wire Spirals wound in contrary dierctions, F i g u r e, for 



showing the reversal of the magnetic poles when the current-direction is reversed . . 0. ll.'. 



Electromagnets, Figure, horse-shoe shaped, with suspension ring and armature (cf. (lan.- 

 Man. Fig. 7r>7; (ian.-Rein. Fig. 909). 



List No. 62,269 62,270 62,271 62,272 



Length of Limbs mm 100 150 200 L'.MI 



0. 8. 0. 12. 0. 16. 0. 20. 



The, armature is fastened to a chain, as suggested by Grimsehl, to prevent its falling down. 



62.273. 2 Coils with winding of different thickness, with handles, and with 2 solid, 2 hollow 

 soft iron cores for same; 2 hollow cylinders of thin sheet iron, 1 steel wire bundle and 1 soft 

 iron wire bundle, Figure, after Friedr. <'. (',. Miillei (M. T. Fig. 187), for electro- 

 magnetic experiments 1. (1.0 



Solenoid on Stand for Electro-magnetic Experiments with the Hartl Pointer Malance: see 

 Xo. 51,600, p. 2-10. 



( 'I. ,-i973,2572,2.'>73. .'.>!. 

 2576,4166. 



