1034 



Voltaic Electricity. Section 10: Electrical Oscillations. 



No. 0322.-) 



63228 63231. 



63225. 1:18. 



63235. 1:9. 



63 227. 1 : 7. 



63226. 1:11. 





63 233. 1 : 5. 



63 236. 1 : 6. 



63 237. 1 : 6. 



t 63,225. 2 Circular Stout Copper Wires, Figure, for concentrating the brush dis- 

 charges 0. 8. 



t 63,226. 2 Parallel Copper Wires, Figure, for producing a luminous band 0. 6. 



t 63,227. Tesla Lamp with a fine long Filament and an external Electrode, Figure, 



with fitting for fixing to high tension transformer 0. 8. 



63.228. Electrodeless Tube, jagged shape, 0.5 m long, Figure 0. 4. o 



63.229. - - idem, 1 m long 0. 6.0 



t 63,230. -- idem, 1.5 m long 0. 8. o 



63,231. -- i d e m, 2 m long 0. 10. (I 



t 63,232. Electrodeless Tube, straight pattern, 0.4 m long 0. !.<> 



63,233. -- idem, with two external electrodes, Figure 0. 5. 



t 63,234. Evacuated Bulb without electrodes, Figure 0. 5. o 



63,235. Rectangle of Tubes without electrodes, Figure 0. (i. o 



t 63,236. Evacuated Bulb with one electrode, Figure 0. (i. o 



63,237. Bulb with an Electrode and phosphorescent cross, Figure 0. 12. 



t 63,238. Bulb with an Electrode and phosphorescent mineral, Figure 0.15.0 



t 63,239. Ebert's Phosphorescent Lamp with 13 electrodes, Figure (Wied. Annalen, Vol. 53, 



1894, p. 159) 0.16.0 



63.240. Vacuum Tube after Elster & Geitel, for deflection experiments, Figure ... 0.12.0 



For further details as to the tubes, kindly refer to directions for use which will be sent on 

 application. 



63.241. Complete Set of Tesla Apparatus after Weinhold, for induction coils of 60 150 mm 

 spark-length (W. TL, pp. 939944 [832837], Figs. 605607 [550552]) 6. 10. 



The following are fitted on a wood board: 1 large Leyden Jar. I spark micrometer, 1 oil-insu- 

 lated transformer (Pig. 63,242). In addition the following are supplied: 1 copper wire ring for the 

 impedance experiment (Pig. 63, 241 A). 1 impedance stirrup, 2 wire spirals, one with glow lamp for 



Cl 2975,2978, 



6113,2976,2994,2995, 

 2983,2996,2997. 



