968 



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



No. 02391 



62404. 1 : 10. 



62 400. 1 : 10. 



62403. 1 : 13. 



62.391. Movable Conductor after Miihlenbein, cf. Fig u r e 62,390, suitable for placing in s. d. 

 the terminals of the commutator Xo. 61,135 0. 15. o 



62.392. Wire Frame on Wood Board (Kolbe-Skellon, Introduction to Electricity, Part II, 



Fig. 96) for Miihlenbein's experiment, cf. F i g u r e 62,390 ' 0. IT., o 



62.393. Ampere's Stand, after Kolbe (Kolbe-Skellon, Introduction to Electricity, Part II, 



Fig. 98) ' 1.15.0 



For above: 



62.394. Simple Solenoid \\illi pointer (Fig. 98 B) 0.12.0 



62.395. Tenfold Solenoid 0. 14. o 



62.396. Curled Solenoid (Fig. 101) o. 12. o 



All solenoids have platinum points. 



62.397. Fixed Wire Frame (Fig. 98 B 2 ) on slider, with two adjustable current-direction 

 indicators 1. o. 



62.398. Tenfold Wire Frame for placing in the -slider; can also be used for demonstrating 



the multiplier 1. o. o 



62,:5!9. Magnetic Needle (Fig. 110) with glass tube, on slider o. 12. o 



62.400. Universal Stand, after Kolbe (Kolbe-Skellon, Introduction to Electricity, Part. II, 

 Figs. 98101, 110, 111, 137), Figure (Ztschr. f. d. phys. u. chem. F/8, 1894/95, 



p. 155) s. 0. 



The following pertain to the apparatus: 

 (a) 'The Stand (Fig. 98 A or 110 A). 



(b) Parts to enable it to be used as an Ampere stand (Figs. 98 101 ): the movable conductors of aluminium 

 with platinum points; all current conductors with adjustable current direction indicators. 



(c) Parts for the model of a multiplier and a tangent galvanometer (Figs. 110 and 111). 



(d) Parts for the sensitive galvanometer (Fig. 137), with astatic needle and copper damper, also 

 an insertion mirror; for showing thermo-electric currents (Fig. 135) and magnetic induction 

 (Figs. 138140, 148). 



(e) 1 Zinc Protecting Box with two glass walls, for finer experiments with the mirror. 



(f) 1 Box for storing the solenoids, needles, etc. 



62.401. 1 Accurately Ground Mirror for No. 62,400 Extra o. 12. n 



62.402. 1 Double Needle with 2 unidirected magnets for No. 62,400 Extra 0. s. u 



62.403. Square Conductor for explaining Ampere's Rule, F i g u r e, after Friedr. ('. (!. Miiller 



(M. T. Fig. 180) 0. li. o 



J2.lol. De la Rive's Floating Current, F i g u re (M. P. 9' h Edn. Ill, Fig. 602; (ian.-Uein. 



Fig. 884), without glass vessel or magnet 0. S. I) 



62,40."). Rotary Solenoid with Iron Stopper, Figure, after (Jotxc, tor demonstrating the action 



of a magnetic field on the position of the solenoid \\liicli is traversed by the current 4. 0.0 



62.406. Apparatus for demonstrating the Alternating Effect of Crossed Currents, after Fried r. 



C. (i. Miiller, at the same time a model of a dynamometer (M. T. Fig. 215) .... .'{. 12.0 



62.407. Apparatus after Buff, Figure, for the attraction of parallel unidirected and the 

 repulsion of parallel opposed currents (M. P. 9" 1 Kdn. III. Figs. "()> and 707) ... 2. lo. o 



Cl. 2673, 2078, 4155. 



