A image taken in the same region of light as the Paschen series
The spectrum gained when light is emitted through electron movement down levels
William Crookes used this to help to discover cathode rays
Put forward a theory for the atom based on the element hydrogen
The spectrum gained when light is absorbed
Thomson used this device to determine that cathode rays have a - charge
This experiment helped to discover the mass to charge of an electron
George Stoney gave this a name.....
