| Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Phillips, Ralph The Electromagnetic Field Produced By a Helix, June, Friedman, Bernard and Malin, Henry: Excitation of the Traveling Wave Tube, February, 1950. Friedman, Bernard and Malin, Henry: Orthogonality Properties of the Modes of the Helical Wave Tube, October, 1950. |
