952 



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



62 280. 1 : 4. 



62 281. 1 : 6. 



62 282 B. 1:6. 



62.279. Electromagnet carrying 150 kg, Figure, with lever stand for measuring the car- t 

 rying capacity (M. P., 9 th Edn., Ill, Fig. 520) . . " <i. o. o 



62.280. Electromagnet after Weinhold, Figure (W. D. Figs. 551553 [524 520 1), with 

 armature. Suited both for experiments on the carrying capacity of magnets and for 

 para- and diamagnetic experiments with the Projection Lantern. For the latter ex- 

 periments we supply along with the magnet: 2 half-armatures with conical poles; 

 1 ebonite slab with arm for suspending the bismuth and nickel rods; and a small glass 



tube for filling with ferric chloride; 1 glass cube 2. l.<i 



('2.280 a. v. Waltenhofen's Pendulum, suitable for No. 62,280, with plain and toothed copper 



piece I. Id. (i 



('2.281. Electromagnet ior Experiments on Diamagnetism and Paramagnetism, Figure. 

 with upright magnet coils 200 mm height and 100 mm diameter, magnet core 225 mm 

 length, 60 mm diameter; with 1 pair pole pieces tapered on one side and truncated on 

 the other S. d. d 



Auxiliary Apparatus for preceding Electromagnets: 



(2.2*2. Device for Experiments on Paramagnetism and Diamagnetism, F i g s. A and H. 

 comprising one stand for suspending the objects experimented on. one stage with vertical 

 adjustment, for setting up the glass cube and the Faraday glass parallelepiped, 1 pointed 

 holder for the experiments on the separation of the aureole of sparks, 1 Light Holder 

 for diamagnetic investigations of the flame, and 1 case of test bodies 2. Id. o 



\Ve supply the follow iiiy test material alnni; with the apparatus: s bars of iron, nickel. ;iht- 

 miiiiuin, bismuth, antimony, zinc, platinum, silver: I wood rod: 1 lead -rlass rod: I jrlass tulie for 

 filling with liquid: also I small dish for liquids and 1 plate i;lass hollow cube of .'!."> mm length of side 

 for holding on air currents when the bars are swin^inj;. 



02.2s.'i. v. Waltenhofen's Pendulum, Figure, for showing the damping effect of induction, 



with plain and toothed copper piece 2. Id. o 



('2,28-1. Foucault's Rotating Copper Disc, Figure, with wheel gearing, for demonstrating 



eddy currents and the heating of the disc when rotated between the magnetic poles .'{. 0. d 



CLU8S,M00, 



..I-".!, 2585, 2591. 



