970 



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



No. 62413 



62 417. 1 : 4. 



iii-'.li:;. Apparatus for the Rotation of a Movable Current about a Magnet, V i g u i c (M. 

 P. 9 lb Edn. Ill, Fig. 579; Gan.-Man. Fig. 736; Gan.-Rein. Fig. 885) 1. 



i'.L'.H5. Apparatus for the Rotation of a Magnet about its own Axis under tlic Influence 

 Current, Figure (M. P. 9 th Edn. Ill, Fig. 587) 



of a 



4.0 



62,414. Apparatus for the Rotation of a Magnet about a Fixed Current, Figure (.M. I'. 



9 th Edn. Ill, Fig. 583) 1. 4. o 



1. 4. ( 



Apparatus for the Rotation of a Current by the Action of another, F i <r u r e (M. r. 

 9 th Edn. Ill, Fig. 719; Gan.-Man. Fig. 748, Gan.-Rein. Fig. S78) 1. 4. 



T. Apparatus for the Rotation: (1) of a Movable Current about a Magnet; (2) of a Magnet 

 about a fixed Current; (3) of a Magnet about its own Axis under the Influence of a Current; 

 (4) of a Current by the Action of another, Figure 3. 1L'. o 



This apparatus is a combination of tin- four preceding apparatus. 



Apparatus after Faraday, Figure, for the Rotation of a Movable Conductor, tra- 

 versed by a Current, about a Magnet (M. P. 9 lh Edn. Ill, Fig. 580) 2. 8. 



<>nc of tin- poles (if :i vertical horse-shoe magnet (to the right of the illustration) is fitted with a 

 wood bush having a mercury gutter into which a copper wire stirrup plunges. The mercury is connected 

 with the one connecting terminal and the copper stirrup with the other (both shown in illustration). The 

 other pole of the magnet (to the left) carries a zinc vessel in which is fitted a copper ring suspended on a 

 copper stirrup. As both stirrups are pivotted the first device is set into rotation when the current passes 

 through and the second when the zinc vessel is filled with dilute sulphuric acid. 



CI. IMS, MM, MM. MM, 



2667. 



