138 New Reaction bettoe en Electrostatic Tubes and Insulator 



Fij 



greater than in air, a more powerful attraction is observed 

 than in air. 



Fifth Experiment. — Two vertical strips o£ tinfoil, parallel to 

 each other 4 or 5 mm. apart, are immersed in water, a plate of 

 glass or of mica a little wider than the strips is interposed, and 

 while the current is on, a repulsion of the strips is observed. 

 The electrostatic tubes coincide with the lines of electrolytic 

 current, and as the plate deviates the tubes uniting the 

 interior and opposite faces, the resultant of the attractions 

 becomes smaller than that of the repul- 

 sions due to the tubes applied to the 

 exterior faces. To direct the Faraday 

 tubes so as to give preponderance to 

 those which pull the strips apart, it is 

 necessary to arrange as in fig. 8, that 

 is, to fix to the diaphragm two perpen- 

 dicular plates which do not allow the 

 tubes (and lines of current) to scatter 



laterally ; the divergence of the leaves is thus increased 

 several fold. 



Sixth Experiment. — Two vertical strips 

 immersed in water (fig. 9). They are 

 parallel, and as near each other as is 

 possible consistent with not being drawn 

 together by capillarity. The pair of 

 strips constitutes one electrode, while 

 the other is a vertical metallic wire, 

 placed in the plane of the first electrode, 

 and 3 cm. distant from it. On the 

 passage of the current, the strips move 

 a little towards the wire, and at the 

 same time diverge from each other just as 

 if they were in air before an electrified 

 conductor. 



The 4th, 5th, and 6th experiments 

 show the existence of the electrostatic 

 field inside an electrolyte. 



Seventh Experiment. — If the two 

 linear conductors in Herz's experiment 

 are replaced by two flexible loops 15 or 

 20 cm. apart, they attract each other 

 powerfully. Here the tubes are in motion between the linear 

 conductors along which they slide by their extremities, and 

 this is the cause of the equality of velocity of propagation in 

 the medium and in conductors. 



Physical Laboratory of the Academy of Sciences, 

 St. Petersburg-. 



Nl 



