Advanced Laboratory Practice in Electricity and Magnetism. E-book. Formato PDF Earle Melvin Terry   -  Forgotten Books, 2017  - 

The electron tube, because of the multiplicity Of its uses, finds many applications, not only in the art of radio communication, but also in engineering practice and in the general research laboratory. Considerable space has been devoted to this device, as well as to the fundamentals Of the electron theory and the passage Of electricity through gases.