Joseph John Thomson

the technique is not difficult if appliances for producing high vacua are available.

it follows on the hypothesis that the cathode rays are charged particles moving with high velocities, that the size of the carriers must be small compared with the dimensions of ordinary atoms or molecules. The assumption of a state of …

The discovery by Monsieur and Madame Curie that a sample of radium gives out sufficient energy to melt half its weight of ice per hour has attracted attention to the question of the source from which the radium derives the energy necessary …

if these corpuscles are charged with electricity and projected from the cathode by the electric field, they would behave exactly like the cathode rays.

I can see no escape from the conclusion that they are charges of negative electricity carried by particles of matter.

The difficulties which would have to be overcome to make several of the preceding experiments conclusive are so great as to be almost insurmountable.