Spark image
Positive rays

The rays originated within the gas itself, none being produced if the tube were totally evacuated.

The positive rays showed the following properties:
(a) they could be deflected by electric and magnetic fields;
(b) they showed a spectrum of velocities;
(c) they were dependent on the gas in the tube;
(d) they could cause ionisation;
(e) they caused fluorescence and affected photographic plates.

 
 
 
© Keith Gibbs 2011