INDUCTIVE ACTION ON JETS. 



581 



a carrier. Either a round disc of sheet brass, 15 mm in diameter, of 

 which the edge has been filed very smooth all round, or a small 

 copper coin, worn quite smooth, may be used for the purpose. 



Very instructive phenomena are produced by elec- 

 trical induction in a jet of water. A small fountain is 

 constructed like those in figures 141, 170, or 175, and 



C 



* I B U A H 



JVKUSIT1 



L1FOKN 



FIG. 311 (I real size). 



an excited rod of glass or sealing-wax held at a distance 

 of a few centimetres from the clear portion of the jet 

 which is the nearest to the orifice from which the jet 

 issues. 



Under ordinary circumstances the jet consists of 

 three portions. Close to the orifice it appears as a 

 transparent cylinder, like a rod of glass. In the next 

 portion it appears still as an uninterrupted liquid 

 cylinder, but it has lost its transparency; this portion 

 consists of an infinite number of single drops, succeed- 

 ing one another very rapidly. In the third portion 

 the drops are visibly separated, as in fig. 311 A. When 



