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Volume 9, Number 1, January, 1930Bancroft Gherardi and F. B. Jewett Telephone Communication System of the United States . . . . . . . . . . . . . 1--100 Francis F. Lucas Structure and Nature of Troostite . . . 101--120 Edward L. Nelson Radio Broadcasting Transmitters and Related Transmission Phenomena . . . . . 121--140 A. B. Clark Wire Line Systems for National Broadcasting . . . . . . . . . . . . . . 141--149 John R. Carson Notes on the Heaviside Operational Calculus . . . . . . . . . . . . . . . . 150--162 Karl K. Darrow Contemporary Advances in Physics, XIX, Fusion of Wave and Corpuscle Theories 163--188 M. K. Zinn Wave Propagation Over Continuously Loaded Fine Wires . . . . . . . . . . . 189--206 R. L. Wegel Theory of Vibration of the Larynx . . . 207--227 Anonymous Abstracts of Technical Articles From Bell System Sources . . . . . . . . . . 228--233 Anonymous Contributors to This Issue . . . . . . . 234--235
William Fondiller Developments in Communication Materials 237--257 Ralph Bown Transoceanic Telephone Service --- Short-Wave Transmission . . . . . . . . 258--269 A. A. Oswald Transoceanic Telephone Service --- Short-Wave Equipment . . . . . . . . . . 270--289 Norman R. French and Charles W. Carter, Jr. and Walter Koenig, Jr. The Words and Sounds of Telephone Conversations . . . . . . . . . . . . . 290--324 John R. Carson The Reciprocal Energy Theorem . . . . . 325--331 W. P. Mason The Approximate Networks of Acoustic Filters . . . . . . . . . . . . . . . . 332--340 Karl K. Darrow Contemporary Advances in Physics, XX, Ionization of Gases by Light . . . . . . 341--355 D. A. Quarles Motion of Telephone Wires in Wind . . . 356--363 W. A. Shewhart Economic Quality Control of Manufactured Product . . . . . . . . . . . . . . . . 364--389 Walter A. MacNair Optimum Reverberation Time for Auditoriums . . . . . . . . . . . . . . 390--397 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 398--403 Anonymous Contributors to this Issue . . . . . . . 404--405
William Wilson and Lloyd Espenschied Radio Telephone Service to Ships at Sea 407--428 H. S. Osbourne A General Switching Plan for Telephone Toll Service . . . . . . . . . . . . . . 429--447 Herbert E. Ives and Frank Gray and M. W. Baldwin Image Transmission System for Two-Way Television . . . . . . . . . . . . . . . 448--469 H. M. Stoller Synchronization System for Two-Way Television . . . . . . . . . . . . . . . 470--477 D. G. Blattner and L. G. Bostwick Sound Transmission System for Two-Way Television . . . . . . . . . . . . . . . 478--482 W. H. Martin Transmitted Frequency Range for Telephone Message Circuits . . . . . . . 483--486 A. B. Clark Some Recent Developments in Long Distance Cables in the United States of America . . . . . . . . . . . . . . . . 487--492 C. E. Lane Phase Distortion in Telephone Apparatus 493--521 H. Nyquist and S. Brand Measurement of Phase Distortion . . . . 522--549 John C. Steinberg Effects of Phase Distortion on Telephone Quality . . . . . . . . . . . . . . . . 550--566 A. B. Clark and C. W. Green Long Distance Cable Circuit for Program Transmission . . . . . . . . . . . . . . 567--594 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 595--599 Anonymous Contributors to this Issue . . . . . . . 600--602
Robert R. Williams Chemistry in the Telephone Industry . . 603--621 W. H. Martin and W. F. Davidson The Trend in the Design of Telephone Transmitters and Receivers . . . . . . . 622--627 A. E. Bowen and G. L. Gilkeson Mutual Impedances of Ground-Return Circuits . . . . . . . . . . . . . . . . 628--651 W. J. Williams and Ralph G. McCurdy A Survey of Room Noise in Telephone Locations . . . . . . . . . . . . . . . 652--667 Karl K. Darrow Contemporary Advances in Physics, XXI, Interception and Scattering of Electrons and Ions . . . . . . . . . . . . . . . . 668--696 L. T. Wilson A Study of Telephone Line Insulators . . 697--729 E. I. Green The Transmission Characteristics of Open-Wire Telephone Lines . . . . . . . 730--759 Liss C. Peterson Transients in Parallel Grounded Circuits, One of Which is of Infinite Length . . . . . . . . . . . . . . . . . 760--769 E. B. Payne Impedance Correction of Wave Filters . . 770--793 H. W. Bode A Method of Impedance Correction . . . . 794--835 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 836--839 Anonymous Contributors to this Issue . . . . . . . 840--842
Charles B. Aiken The Detection of Two Modulated Waves Which Differ Slightly in Carrier Frequency . . . . . . . . . . . . . . . 1--19 F. E. Haworth A Magnetic Curve Tracer . . . . . . . . 20--32 Herbert E. Ives A Multi-Channel Television Apparatus . . 33--45 W. C. Jones Condenser and Carbon Microphones --- Their Construction and Use . . . . . . . 46--62 G. C. Southworth Certain Factors Affecting the Gain of Directive Antennas . . . . . . . . . . . 63--95 L. J. Sivian Absolute Calibration of Condenser Transmitters . . . . . . . . . . . . . . 96--115 W. H. Martin Rating the Transmission Performance of Telephone Circuits . . . . . . . . . . . 116--131 A. R. Kemp Paragutta, A New Insulating Material for Submarine Cables . . . . . . . . . . . . 132--148 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 149--152 Anonymous Contributors to this Issue . . . . . . . 153--154
R. F. Pack Symposium on Coordination of Power and Telephone Plant . . . . . . . . . . . . 155--158 W. H. Harrison and A. E. Silver Trends in Telephone and Power Practise as Affecting Coordination . . . . . . . 159--183 H. L. Wills and O. B. Blackwell Status of Joint Development and Research on Noise Frequency Induction . . . . . . 184--205 R. N. Conwell and H. S. Warren Status of Joint Development and Research on Low-Frequency Induction . . . . . . . 206--230 J. C. Martin and H. L. Huber Status of Cooperative Work on Joint Use of Poles . . . . . . . . . . . . . . . . 231--240 B. Gherardi Symposium on Coordination of Power and Telephone Plant, Closing Remarks . . . . 241--242 Lloyd Espenschied and William Wilson Overseas Radio Extensions to Wire Telephone Networks . . . . . . . . . . . 243--264 Herbert E. Ives Some Optical Features in Two-Way Television . . . . . . . . . . . . . . . 265--272 Edward C. Molina Bayes' Theorem --- An Expository Presentation . . . . . . . . . . . . . . 273--283 Otto J. Zobel Extensions to the Theory and Design of Electric Wave-Filters . . . . . . . . . 284--341 Anonymous Abstracts of Technical Articles From Bell System Sources . . . . . . . . . . 342--345 Anonymous Contributors to this Issue . . . . . . . 346--348
Harvey Fletcher Some Physical Characteristics of Speech and Music . . . . . . . . . . . . . . . 349--373 John R. Carson The Statistical Energy-Frequency Spectrum of Random Disturbances . . . . 374--381 T. C. Henneberger and P. G. Edwards Bridge Methods for Locating Resistance Faults on Cable Wires . . . . . . . . . 382--407 Ronald M. Foster Mutual Impedance of Grounded Wires Lying on the Surface of the Earth . . . . . . 408--419 John Riordan Transients in Grounded Wires on the Earth's Surface . . . . . . . . . . . . 420--431 John R. Shea Developments in the Manufacture of Lead-Covered Paper-Insulated Telephone Cable . . . . . . . . . . . . . . . . . 432--471 W. Howard Wise Effect of Ground Permeability on Ground Return Circuits . . . . . . . . . . . . 472--484 George Crisson Negative Impedances and the Twin 21-Type Repeater . . . . . . . . . . . . . . . . 485--513 R. L. Jones New Standard Specifications for Wood Poles . . . . . . . . . . . . . . . . . 514--524 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 525--528 Anonymous Contributors to this Issue . . . . . . . 529--530
R. I. Wilkinson The Interconnection of Telephone Systems --- Graded Multiples . . . . . . . . . . 531--564 E. C. Wente and A. L. Thuras Moving-Coil Telephone Receivers and Microphones . . . . . . . . . . . . . . 565--576 G. D. Gillett Some Developments in Common Frequency Broadcasting . . . . . . . . . . . . . . 577--600 Austin Bailey and T. A. McCann Application of Printing Telegraph to Long-Wave Radio Circuits . . . . . . . . 601--615 W. B. Snow Audible Frequency Ranges of Music, Speech and Noise . . . . . . . . . . . . 616--627 Karl K. Darrow Contemporary Advances in Physics, XXII --- Transmutation . . . . . . . . . . . 628--655 E. Bruce Developments in Short-Wave Directive Antennas . . . . . . . . . . . . . . . . 656--683 Anonymous Abstracts of Technical Articles From Bell System Sources . . . . . . . . . . 684--690 Anonymous Contributors to this Issue . . . . . . . 691--692 Anonymous The Faraday Centenary . . . . . . . . . iii--vii
J. B. Johnson The Cathode Ray Oscillograph . . . . . . 1--27 C. E. Fay The Operation of Vacuum Tubes as Class B and Class C Amplifiers . . . . . . . . . 28--52 O. B. Blackwell The Time Factor in Telephone Transmission . . . . . . . . . . . . . . 53--66 F. B. Llewellyn Constant Frequency Oscillators . . . . . 67--100 D. A. McLean and R. L. Peek, Jr. and E. E. Schumacher Some Physical Properties of Wiping Solders . . . . . . . . . . . . . . . . 101--125 H. Nyquist Regeneration Theory . . . . . . . . . . 126--147 Karl K. Darrow Contemporary Advances in Physics, XXIII --- Data and Nature of Cosmic Rays . . . 148--184 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 185--194 Anonymous Contributors to this Issue . . . . . . . 195--196
H. A. Affel and W. S. Gorton and R. W. Chesnut A New Key West--Havana Carrier Telephone Cable . . . . . . . . . . . . . . . . . 197--212 E. B. Wood and D. R. Brobst Cellulose Acetate Treatment for Textile Insulation --- Engineering Development 213--230 C. R. Avery and H. Kress Cellulose Acetate Treatment for Textile Insulation --- Development of the Manufacturing Process . . . . . . . . . 231--244 W. C. Jones and A. H. Inglis The Development of a Handset for Telephone Stations . . . . . . . . . . . 245--263 G. R. Harris Precision Methods Used in Constructing Electric Wave Filters for Carrier Systems . . . . . . . . . . . . . . . . 264--282 Hal F. Fruth Cathode Sputtering --- A Commercial Application . . . . . . . . . . . . . . 283--292 A. H. Inglis and C. H. G. Gray and R. T. Jenkins A Voice and Ear for Telephone Measurements . . . . . . . . . . . . . . 293--317 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 318--323 Anonymous Contributors to this Issue . . . . . . . 324--325
H. S. Osborne and A. M. Dowling The Electrical Discoveries of Joseph Henry, A Supplement to The Bell System Technical Journal, July 1932 . . . . . . 1--22 Bancroft Gherardi Henry as an Electrical Pioneer . . . . . 327--333 C. J. Prescott, Jr. and M. J. Kelly The Caesium--Oxygen--Silver Photoelectric Cell . . . . . . . . . . . 334--367 S. B. Wright and D. Mitchell Two-Way Radio Telephone Circuits . . . . 368--382 K. L. Scott Magnet Steels and Permanent Magnets --- Relationships Among Their Magnetic Properties . . . . . . . . . . . . . . . 383--401 P. B. Flanders A Method of Measuring Acoustic Impedance 402--410 E. J. Sterba and C. B. Feldman Transmission Lines for Short-Wave Radio Systems . . . . . . . . . . . . . . . . 411--450 H. C. Harrison and P. B. Flanders An Efficient Miniature Condenser Microphone System . . . . . . . . . . . 451--461 H. H. Nance Wire Communication Aids to Air Transportation . . . . . . . . . . . . . 462--476 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 477--481 Anonymous Contributors to this Issue . . . . . . . 482--483
Bancroft Gherardi and Frank B. Jewett World-Wide Telephony --- Its Problems and Future . . . . . . . . . . . . . . . 485--519 A. B. Clark and H. S. Osborne Long Distance Telephone Circuits in Cable . . . . . . . . . . . . . . . . . 520--545 C. J. Davisson The Conception and Demonstration of Electron Waves . . . . . . . . . . . . . 546--562 Edward C. Molina An Expansion for Laplacian Integrals in Terms of Incomplete Gamma Functions, and Some Applications . . . . . . . . . . . 563--575 Karl K. Darrow Contemporary Advances in Physics, XXIV --- High-Frequency Phenomena in Gases, First Part . . . . . . . . . . . . . . . 576--607 A. J. Christopher Transformer Coupling Circuits for High-Frequency Amplifiers . . . . . . . 608--621 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 622--628 Anonymous Contributors to this Issue . . . . . . . 629--630
H. G. Walker and L. S. Ford Pulp Insulation for Telephone Cables . . 1--21 F. H. Best A Recording Transmission Measuring System for Telephone Circuit Testing . . 22--34 Ray S. Hoyt Probability Theory and Telephone Transmission Engineering . . . . . . . . 35--75 A. M. Curtis An Oscillograph for Ten Thousand Cycles 76--90 Karl K. Darrow Contemporary Advances in Physics, XXV, High-Frequency Phenomena in Gases, Second Part . . . . . . . . . . . . . . 91--118 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 119--122 Anonymous Contributors to this Issue . . . . . . . 123--124
J. C. Schelleng and C. R. Burrows and E. B. Ferrell Ultra-Short Wave Propagation . . . . . . 125--161 John Riordan and Erling D. Sunde Mutual Impedance of Grounded Wires for Horizontally Stratified Two-Layer Earth 162--177 J. H. Scaff and E. E. Schumacher Some Theoretical and Practical Aspects of Gases in Metals . . . . . . . . . . . 178--196 C. R. Englund and A. B. Crawford and W. W. Mumford Some Results of a Study of Ultra-Short-Wave Transmission Phenomena 197--227 W. R. Bennett New Results in the Calculation of Modulation Products . . . . . . . . . . 228--243 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 244--247 Anonymous Contributors to This Issue . . . . . . . 248--249
A. B. Clark and B. W. Kendall Carrier in Cable . . . . . . . . . . . . 251--263 Ronald M. Foster Mutual Impedance of Grounded Wires Lying On or Above the Surface of the Earth . . 264--287 Karl K. Darrow Contemporary Advances in Physics, XXVI, The Nucleus, First Part . . . . . . . . 288--330 F. W. McKown and J. W. Emling A System of Effective Transmission Data for Rating Telephone Circuits . . . . . 331--346 T. G. Castner and C. W. Carter, Jr. Developments in the Application of Articulation Testing . . . . . . . . . . 347--370 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 371--374 Anonymous Contributors to this Issue . . . . . . . 375--376
Harvey Fletcher and W. A. Munson Loudness, Its Definition, Measurement and Calculation . . . . . . . . . . . . 377--430 Albert C. Walker Effect of Atmospheric Humidity and Temperature on the Relation Between Moisture Content and Electrical Conductivity of Cotton . . . . . . . . . 431--451 John G. Ferguson Classification of Bridge Methods of Measuring Impedances . . . . . . . . . . 452--468 R. F. Davis and H. R. Huntley Some Theoretical and Practical Aspects of Noise Induction . . . . . . . . . . . 469--497 E. T. Burton and E. M. Boardman Audio Frequency Atmospherics . . . . . . 498--516 Leonard Gladstone Abraham Certain Factors Limiting the Volume Efficiency of Repeatered Telephone Circuits . . . . . . . . . . . . . . . . 517--532 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 533--537 Anonymous Contributors to this Issue . . . . . . . 538--539
H. S. Black Stabilized Feedback Amplifiers . . . . . 1--18 A. G. Chapman Open-Wire Crosstalk . . . . . . . . . . 19--58 F. B. Llewellyn Vacuum Tube Electronics at Ultra-high Frequencies . . . . . . . . . . . . . . 59--101 Karl K. Darrow Contemporary Advances in Physics, XXVII The Nucleus, Second Part . . . . . . . . 102--158 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 159--160 Anonymous Contributors to this Issue . . . . . . . 161
F. S. Goucher The Carbon Microphone: An Account of Some Researches Bearing on Its Action 163--194 A. G. Chapman Open-Wire Crosstalk . . . . . . . . . . 195--238 Harvey Fletcher Symposium on Wire Transmission of Symphonic Music and Its Reproduction in Auditory Perspective, Basic Requirements 239--244 J. C. Steinberg and W. B. Snow Physical Factors, Symposium on Wire Transmission of Symphonic Music and Its Reproduction in Auditory Perspective . . 245--258 E. C. Wente and A. L. Thuras Loud Speakers and Microphones, Symposium on Wire Transmission of Symphonic Music and Its Reproduction in Auditory Perspective . . . . . . . . . . . . . . 259--277 E. O. Scriven Reproduction in Auditory Perspective . . 278--284 H. A. Affel and R. W. Chesnut and R. H. Mills Transmission Lines, Symposium on Wire Transmission of Symphonic Music and Its Reproduction in Auditory Perspective . . 285--300 E. H. Bedell and Iden Kerney System Adaptation, Symposium on Wire Transmission of Symphonic Music and Its Reproduction in Auditory Perspective . . 301--308 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 309--312 Anonymous Contributors to this Issue . . . . . . . 313--314
R. C. Mathes and S. B. Wright The Compandor --- An Aid Against Static in Radio Telephony . . . . . . . . . . . 315--332 C. B. Aiken The Effect of Background Noise in Shared Channel Broadcasting . . . . . . . . . . 333--350 H. S. Hamilton Wide-Band Open-Wire Program System . . . 351--381 A. W. Clement Line Filter for Program System . . . . . 382--390 Karl K. Darrow Contemporary Advances in Physics, XXVIII --- The Nucleus, Third Part . . . . . . 391--404 W. P. Mason Electrical Wave Filters Employing Quartz Crystals as Elements . . . . . . . . . . 405--452 F. R. Lack and G. W. Willard and I. E. Fair Some Improvements in Quartz Crystal Circuit Elements . . . . . . . . . . . . 453--463 Pierre Mertz and Frank Gray A Theory of Scanning and Its Relation to the Characteristics of the Transmitted Signal in Telephotography and Television 464--515 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 516--519 Anonymous Contributors to this Issue . . . . . . . 520--521
S. A. Levin and Liss C. Peterson An Extension of the Theory of Three-Electrode Vacuum Tube Circuits . . 523--531 S. A. Schelkunoff The Electromagnetic Theory of Coaxial Transmission Lines and Cylindrical Shields . . . . . . . . . . . . . . . . 532--579 Karl K. Darrow Contemporary Advances in Physics, XXVIII --- The Nucleus, Third Part . . . . . . 580--613 D. B. Penick The Measurement and Reduction of Microphonic Noise in Vacuum Tubes . . . 614--633 G. L. Pearson Fluctuation Noise in Vacuum Tubes . . . 634--653 L. Espenschied and M. E. Strieby Systems for Wide-Band Transmission Over Coaxial Lines . . . . . . . . . . . . . 654--679 E. Peterson and J. G. Kreer and L. A. Ware Regeneration Theory and Experiment . . . 680--700 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 701--703 Anonymous Contributors to this Issue . . . . . . . 704--705
A. B. Clark Wide Band Transmission Over Balanced Circuits . . . . . . . . . . . . . . . . 1--7 W. C. Ellis and Earle E. Schumacher A Survey of Magnetic Materials in Relation to Structure . . . . . . . . . 8--43 H. A. Pidgeon Theory of Multi-Electrode Vacuum Tubes 44--84 J. B. Johnson and F. B. Llewellyn Limits to Amplification . . . . . . . . 85--96 M. J. Kelly and A. L. Samuel Vacuum Tubes as High-Frequency Oscillators . . . . . . . . . . . . . . 97--134 E. Bruce and A. C. Beck and L. R. Lowry Horizontal Rhombic Antennas . . . . . . 135--158 A. L. Thuras and R. T. Jenkins and H. T. O'Neil Extraneous Frequencies Generated in Air Carrying Intense Sound Waves . . . . . . 159--172 Anonymous Abstracts of Articles from Bell System Sources . . . . . . . . . . . . . . . . 173--175 Anonymous Contributors to this Issue . . . . . . . 176--178
R. N. Hunter and R. P. Booth Cable Crosstalk--Effect of Non-Uniform Current Distribution in the Wires . . . 179--194 E. Bruce and A. C. Beck Experiments with Directivity Steering for Fading Reduction . . . . . . . . . . 195--210 H. W. Bode A General Theory of Electric Wave Filters . . . . . . . . . . . . . . . . 211--214 H. W. Bode and R. L. Dietzold Ideal Wave Filters . . . . . . . . . . . 215--252 C. R. Burrows and L. E. Hunt and A. Decino Ultra-Short-Wave Propagation: Mobile Urban Transmission Characteristics . . . 253--272 H. P. Lawther, Jr. An Application of Number Theory to the Splicing of Telephone Cables . . . . . . 273--284 Karl K. Darrow Contemporary Advances in Physics, XXIX, The Nucleus, Fourth Part . . . . . . . . 285--321 Robert M. Kalb and William R. Bennett Ferromagnetic Distortion of a Two-Frequency Wave . . . . . . . . . . . 322--359 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 360--365 Anonymous Contributors to this Issue . . . . . . . 366--367
C. R. Englund and A. B. Crawford and W. W. Mumford Further Results of a Study of Ultra-Short-Wave Transmission Phenomena 369--387 E. C. Wente Acoustical Instruments . . . . . . . . . 388--412 J. A. Becker Thermionic Electron Emission . . . . . . 413--476 Charles R. Burrows Radio Propagation Over Spherical Earth 477--488 F. A. Polkinghorn and N. F. Schlaack A Single-Sideband Short-Wave System for Transatlantic Telephony . . . . . . . . 489--508 Ray S. Hoyt and Sallie Pero Mead Mutual Impedances of Parallel Wires . . 509--533 N. F. Schlaack and F. A. Polkinghorn An Unattended Ultra-Short-Wave Radio Telephone System . . . . . . . . . . . . 534--541 Anonymous Around the World by Telephone . . . . . 542--543 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 544--549 Anonymous Contributors to this Issue . . . . . . . 550--551
F. B. Jewett Dr. George A. Campbell . . . . . . . . . 553--557 Anonymous Dr. Campbell's Memoranda of 1907 and 1912 . . . . . . . . . . . . . . . . . . 558--572 H. R. Huntley and E. J. O'Connell Some Aspects of Low-Frequency Induction Between Power and Telephone Circuits . . 573--599 Leonard Gladstone Abraham Circulating Currents and Singing on Two-Wire Cable Circuits . . . . . . . . 600--631 F. B. Llewellyn Operation of Ultra-High-Frequency Vacuum Tubes . . . . . . . . . . . . . . . . . 632--665 S. A. Levin and Liss C. Peterson Further Extensions of the Theory of Multi-Electrode Vacuum Tube Circuits . . 666--679 Austin Bailey and Howard M. Thomson Transatlantic Long-Wave Radio Telephone Transmission and Related Phenomena from 1923 to 1933 . . . . . . . . . . . . . . 680--697 Anonymous Technical Digests . . . . . . . . . . . 698--698 H. E. Haring and U. B. Thomas and E. E. Schumacher and G. S. Phipps Technical Digests: Superiorities of Lead-Calcium Alloys for Storage Battery Construction . . . . . . . . . . . . . . 699--701 F. A. Gifford and R. B. Meader Technical Digests: Marine Radio Telephone Service for Boston Harbor . . 702--707 E. B. Hansen Technical Digests: Harbor Craft Ship-to-Shore Radio Telephone Service in Puget Sound Area . . . . . . . . . . . . 708--712 H. N. Willets Technical Digests: Ship Sets for Harbor Ship-to-Shore Service . . . . . . . . . 713--717 W. P. Mason Technical Digests: An Electromechanical Representation of a Piezoelectric Crystal Used As A Transducer . . . . . . 718--723 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 724--727 Anonymous Contributors to this Issue . . . . . . . 728--730
Austin Bailey and A. E. Harper Long-Wave Radio Transmission Phenomena Associated with a Cessation of the Sun's Rays . . . . . . . . . . . . . . . . . . 1--19 R. M. Burns The Corrosion of Metals---I. Mechanism of Corrosion Processes . . . . . . . . . 20--38 Victor E. Legg Magnetic Measurements at Low Flux Densities Using the Alternating Current Bridge . . . . . . . . . . . . . . . . . 39--62 R. M. Bozorth The Present Status of Ferromagnetic Theory . . . . . . . . . . . . . . . . . 63--91 S. A. Schelkunoff Some Equivalence Theorems of Electromagnetics and Their Application to Radiation Problems . . . . . . . . . 92--112 G. W. Elmen Magnetic Alloys of Iron, Nickel, and Cobalt . . . . . . . . . . . . . . . . . 113--135 A. G. Ganz and A. G. Laird Improvements in Communication Transformers . . . . . . . . . . . . . . 136--150 J. M. Barstow and P. W. Blye and H. E. Kent Technical Digests--Measurement of Telephone Noise and Power Wave Shape . . 151--156 A. M. Skellett Technical Digests---On the Correlation of Radio Transmission with Solar Phenomena . . . . . . . . . . . . . . . 157--161 J. P. Schafer and W. M. Goodall Technical Digests---Eclipse Effects in the Ionsphere . . . . . . . . . . . . . 162--166 R. H. Card Technical Digests---Earth Resistivity and Geological Structure . . . . . . . . 167--171 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 172--176 Anonymous Contributors to this Issue . . . . . . . 177--179
R. K. Potter and A. C. Peterson, Jr. The Reliability of Short-Wave Radio Telephone Circuits . . . . . . . . . . . 181--196 C. J. Christensen and G. L. Pearson Spontaneous Resistance Fluctuations in Carbon Microphones and Other Granular Resistances . . . . . . . . . . . . . . 197--223 Karl K. Darrow Contemporary Advances in Physics, XXX, The Theory of Magnetism . . . . . . . . 224--247 E. I. Green and F. A. Leibe and H. E. Curtis The Proportioning of Shielded Circuits for Minimum High-Frequency Attenuation 248--283 G. C. Southworth Hyper-Frequency Wave Guides---General Considerations and Experimental Results 284--309 John R. Carson and Sallie P. Mead and S. A. Schelkunoff Hyper-Frequency Wave Guides---Mathematical Theory . . . . . . 310--333 W. O. Pennell and H. P. Lawther A Magneto-Elastic Source of Noise in Steel Telephone Wires . . . . . . . . . 334--339 John R. Carson An Extension of Operational Calculus . . 340--342 R. M. Burns and H. E. Haring Technical Digests---Determination of the Corrosion Behavior of Painted Iron and the Inhibitive Action of Paints . . . . 343--348 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 349--350 Anonymous Contributors to this Issue . . . . . . . 351--353
E. C. Molina A Laplacian Expansion for Hermitian--Laplace Functions of High Order . . . . . . . . . . . . . . . . . 355--362 R. H. Colley and C. H. Amadon The Relation Between Penetration and Decay in Creosoted Southern Pine Poles 363--379 F. M. Bronson Tandem Operation in the Bell System . . 380--404 R. N. Marshall and F. F. Romanow A Non-Directional Microphone . . . . . . 405--423 R. V. L. Hartley Oscillations in Systems with Non-linear Reactance . . . . . . . . . . . . . . . 424--440 L. W. Hussey and L. R. Wrathall Oscillations in an Electromechanical System . . . . . . . . . . . . . . . . . 441--445 D. A. Quarles A New Type of Underground Telephone Wire 446--454 L. P. Ferris and B. G. King and P. W. Spence and H. B. Williams Technical Digests---Effect of Electric Shock on the Heart . . . . . . . . . . . 455--468 W. H. Doherty Technical Digests---A New High-Efficiency Power Amplifier for Modulated Waves . . . . . . . . . . . . 469--475 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 476--479 Anonymous Contributors to this Issue . . . . . . . 480--482
Anonymous Technical Developments Underlying the Toll Services of the Bell System: A Supplement to the Bell System Technical Journal, July 1936 . . . . . . . . . . . 1--80 Beverly L. Clarke and H. W. Hermance Microchemical and Special Methods of Analysis in Communication Research . . . 483--503 A. D. Knowlton and G. A. Locke and F. J. Singer Switchboards and Signaling Facilities of the Teletypewriter Exchange System . . . 504--528 R. E. Pierce and E. W. Bemis A Transmission System for Teletypewriter Exchange Service . . . . . . . . . . . . 529--548 F. W. Reynolds A New Telephotograph System . . . . . . 549--574 F. B. Llewellyn Equivalent Networks Of Negative-Grid Vacuum Tubes at Ultra-High Frequencies 575--586 J. A. Carr Forces of Oblique Winds on Telephone Wires . . . . . . . . . . . . . . . . . 587--602 R. M. Burns Corrosion of Metals---II. Lead and Lead-Alloy Cable Sheathing . . . . . . . 603--625 C. J. Spain and D. P. Loye and E. W. Templin Technical Digests---Reduction of Airplane Noise and Vibration . . . . . . 626--627 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 628--632 Anonymous Contributors to this Issue . . . . . . . 633--634
M. E. Strieby A Million-Cycle Telephone System . . . . 1--9 A. L. Samuel and N. E. Sowers A Power Amplifier for Ultra-High Frequencies . . . . . . . . . . . . . . 10--34 W. Howard Wise The Physical Reality of Zenneck's Surface Wave . . . . . . . . . . . . . . 35--44 Charles R. Burrows Radio Propagation Over Plane Earth --- Field Strength Curves . . . . . . . . . 45--75 J. O'R. Coleman and R. F. Davis The Inductive Coordination of Common-Neutral Power Distribution Systems and Telephone Circuits . . . . . 76--100 S. O. Rice Series for the Wave Function of a Radiating Dipole at the Earth's Surface 101--109 E. D. Sunde Technical Digests --- Currents and Potentials along Leaky Ground-Return Conductors . . . . . . . . . . . . . . . 110--112 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 113--115 Anonymous Contributors to this Issue . . . . . . . 116--117
Edwin H. Colpitts Recent Trends in Toll Transmission in the United States . . . . . . . . . . . 119--143 S. A. Schelkunoff and T. M. Odarenko Crosstalk Between Coaxial Transmission Lines . . . . . . . . . . . . . . . . . 144--164 C. N. Hickman Sound Recording on Magnetic Tape . . . . 165--177 E. L. Norton Constant Resistance with Applications to Filter Groups . . . . . . . . . . . . . 178--193 R. E. Waterman and John Leutritz and Caleb M. Hill A Laboratory Evaluation of Wood Preservatives . . . . . . . . . . . . . 194--211 W. B. Ellwood and V. E. Legg Study of Magnetic Losses at Low Flux Densities in Permalloy Sheet . . . . . . 212--227 Albert C. Walker Moisture in Textiles . . . . . . . . . . 228--246 Anonymous Abstracts of Technical Papers from Bell System Sources . . . . . . . . . . . . . 247--248 Anonymous Contributors to this Issue . . . . . . . 249--250
Edwin H. Colpitts Scientific Research Applied to the Telephone Transmitter and Receiver . . . 251--274 W. P. Mason and R. A. Sykes The Use of Coaxial and Balanced Transmission Lines in Filters and Wide Band Transformers for High Radio Frequencies . . . . . . . . . . . . . . 275--302 John Riordan A Ladder Network Theorem . . . . . . . . 303--318 Karl K. Darrow Contemporary Advances in Physics, XXXI --- Spinning Atoms and Spinning Electrons . . . . . . . . . . . . . . . 319--336 H. T. Friis and C. B. Feldman A Multiple Unit Steerable Antenna for Short-Wave Reception . . . . . . . . . . 337--419 Anonymous Abstracts of Technical Papers from Bell System Sources . . . . . . . . . . . . . 420--421 Anonymous Contributors in this Issue . . . . . . . 422
W. P. Mason Resistance Compensated Band-Pass Crystal Filters for Use in Unbalanced Circuits 423--436 E. Peterson and J. M. Manley and L. R. Wrathall Magnetic Generation of a Group of Harmonics . . . . . . . . . . . . . . . 437--455 S. B. Wright The Vodas . . . . . . . . . . . . . . . 456--474 C. C. Taylor Radio Telephone Noise Reduction by Voice Control at Receiver . . . . . . . . . . 475--486 H. A. Affel Transmitted Frequency Range for Circuits in Broad-Band Systems . . . . . . . . . 487--492 E. J. Murphy and S. O. Morgan The Dielectric Properties of Insulating Materials . . . . . . . . . . . . . . . 493--512 John R. Carson and Thornton C. Fry Variable Frequency Electric Circuit Theory with Application to the Theory of Frequency-Modulation . . . . . . . . . . 513--540 Pierre Mertz and K. W. Pfleger Irregularities in Broad-Band Wire Transmission Circuits . . . . . . . . . 541--559 Ralph Bown Technical Digests --- Transoceanic Radio Telephone Development . . . . . . . . . 560--567 A. L. Samuel Technical Digests --- A Negative-Grid Triode Oscillator and Amplifier for Ultra-High Frequencies . . . . . . . . . 568--573 Charles R. Burrows Addendum to `Radio Propagation Over Plane Earth --- Field Strength Curves' 574--577 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 578--580 Anonymous Contributors to this Issue . . . . . . . 581--583
F. H. Best New Transmission Measuring Systems for Telephone Circuit Maintenance . . . . . 1--16 S. A. Schelkunoff The Impedance Concept and its Application to Problems of Reflection, Refraction, Shielding and Power Absorption . . . . . . . . . . . . . . . 17--48 C. E. Fay and A. L. Samuel and W. Shockley On the Theory of Space Charge Between Parallel Plane Electrodes . . . . . . . 49--79 C. W. Green and E. I. Green A Carrier Telephone System for Toll Cables . . . . . . . . . . . . . . . . . 80--105 R. W. Chesnut and L. M. Ilgenfritz and A. Kenner Cable Carrier Telephone Terminals . . . 106--124 C. E. Lane Crystal Channel Filters for the Cable Carrier System . . . . . . . . . . . . . 125--136 M. A. Weaver and R. S. Tucker and P. S. Darnell Crosstalk and Noise Features of Cable Carrier Telephone System . . . . . . . . 137--161 H. J. Fisher and M. L. Almquist and R. H. Mills A New Single Channel Carrier Telephone System . . . . . . . . . . . . . . . . . 162--183 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 184--190 Anonymous Contributors to this Issue . . . . . . . 191--193
J. A. Carr and F. V. Haskell Studies of Telephone Line Wire Spacing Problems . . . . . . . . . . . . . . . . 195--228 H. W. Bode Variable Equalizers . . . . . . . . . . 229--244 C. O. Gibbon An Explanation of the Common Battery Anti-sidetone Subscriber Set . . . . . . 245--257 Arthur W. Horton, Jr. The Occurrence and Effect of Lockout Occasioned by Two Echo Suppressors . . . 258--280 A. C. Norwine and O. J. Murphy Characteristic Time Intervals in Telephonic Conversation . . . . . . . . 281--291 Karl K. Darrow Radioactivity --- Artificial and Natural 292--318 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 319--323 Anonymous Contributors to this Issue . . . . . . . 324--325
Julian Blanchard Hertz, the Discoverer of Electric Waves 327--337 W. C. Jones Instruments for the New Telephone Sets 338--357 A. H. Inglis Transmission Features of the New Telephone Sets . . . . . . . . . . . . . 358--380 Beverly L. Clarke and A. E. Ruehle Spectrochemical Analysis in Communication Research . . . . . . . . . 381--392 W. Herriott High Speed Motion Picture Photography 393--405 H. C. Montgomery An Optical Harmonic Analyzer . . . . . . 406--415 W. G. Gustafson Magnetic Shielding of Transformers at Audio Frequencies . . . . . . . . . . . 416--437 M. E. Strieby Coaxial Cable System for Television Transmission . . . . . . . . . . . . . . 438--457 G. H. Stevenson Stabilized Feedback Oscillators . . . . 458--474 C. J. Davisson The Discovery of Electron Waves . . . . 475--482 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 483--485 Anonymous Contributors to this Issue . . . . . . . 486--488
C. R. Englund and A. B. Crawford and W. W. Mumford Ultra-Short-Wave Transmission and Atmospheric Irregularities . . . . . . . 489--519 S. B. Wright Amplitude Range Control . . . . . . . . 520--538 A. C. Norwine Devices for Controlling Amplitude Characteristics of Telephonic Signals 539--554 Charles R. Burrows The Exponential Transmission Line . . . 555--573 L. A. Meacham The Bridge Stabilized Oscillator . . . . 574--591 A. J. Rack Effect of Space Charge and Transit Time on the Shot Noise in Diodes . . . . . . 592--619 E. F. Watson Fundamentals of Teletypewriters Used in the Bell System . . . . . . . . . . . . 620--639 E. J. Murphy and S. O. Morgan The Dielectric Properties of Insulating Materials . . . . . . . . . . . . . . . 640--669 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 670--672 Anonymous Contributors to this Issue . . . . . . . 673--674
Frank Gray Electrostatic Electron-Optics . . . . . 1--31 E. Peterson and L. W. Hussey Equivalent Modulator Circuits . . . . . 32--48 J. T. O'Leary and E. C. Blessing and J. W. Beyer An Improved Three-Channel Carrier Telephone System . . . . . . . . . . . . 49--75 F. J. Scudder and J. N. Reynolds Crossbar Dial Telephone Switching System 76--118 B. W. Kendall and H. A. Affel A Twelve-Channel Carrier Telephone System for Open-Wire Lines . . . . . . . 119--142 R. B. Shanck and F. A. Cowan and S. I. Cory Recent Developments in the Measurement of Telegraph Transmission . . . . . . . 143--189 Karl K. Darrow Contemporary Advances in Physics, XXXII, Particles of the Cosmic Rays . . . . . . 190--217 W. H. Harrison Hurricane and Flood --- September 1938 218--221 Lloyd Espenschied and R. C. Newhouse A Terrain Clearance Indicator . . . . . 222--234 J. J. Pilliod Transcontinental Telephone Lines . . . . 235--245 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 246--250 Anonymous Contributors to this Issue . . . . . . . 251--254
A. G. Johnson and L. I. Shaw Some Ceramic Manufacturing Developments of the Western Electric Company . . . . 255--279 F. B. Llewellyn and A. E. Bowen The Production of Ultra-High-Frequency Oscillations by Means of Diodes . . . . 280--291 C. N. Anderson A Representation of the Sunspot Cycle 292--299 John Riordan The Number of Impedances of an $n$ Terminal Network . . . . . . . . . . . . 300--314 R. S. Caruthers Copper Oxide Modulators in Carrier Telephone Systems . . . . . . . . . . . 315--337 L. C. Starbird and J. D. Mathis Some Applications of the Type `J' Carrier System . . . . . . . . . . . . . 338--362 L. M. Ilgenfritz and R. N. Hunter and A. L. Whitman Line Problems in the Development of the Twelve-Channel Open-Wire Carrier System 363--387 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 388--390 Anonymous Contributors to this Issue . . . . . . . 391--393
John R. Carson Frequency-Modulation: Theory of the Feedback Receiving Circuit . . . . . . . 395--403 J. G. Chaffee The Application of Negative Feedback to Frequency-Modulation Systems . . . . . . 404--437 V. E. Legg Survey of Magnetic Materials and Applications in the Telephone System . . 438--464 Liss C. Peterson Impedance Properties of Electron Streams 465--481 J. R. Townsend and W. J. Clarke Plastic Materials in Telephone Use . . . 482--501 E. J. Murphy and S. O. Morgan The Dielectric Properties of Insulating Materials, III Alternating and Direct Current Conductivity . . . . . . . . . . 502--537 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 538--543 Anonymous Contributors to this Issue . . . . . . . 544--545
W. B. Bedell and G. B. Ransom and W. A. Stevens Experience in Applying Carrier Telephone Systems to Toll Cables . . . . . . . . . 547--587 M. J. Aykroyd and D. G. Geiger The Toronto--Barrie Toll Cable . . . . . 588--604 E. Dietze and W. D. Goodale, Jr. The Computation of the Composite Noise Resulting from Random Variable Sources 605--623 B. D. Holbrook and J. T. Dixon Load Rating Theory for Multi-Channel Amplifiers . . . . . . . . . . . . . . . 624--644 W. Shockley The Quantum Physics of Solids, I. The Energies of Electrons in Crystals . . . 645--723 C. F. Wiebusch Dial Clutch of the Spring Type . . . . . 724--741 Anonymous Abstracts of Technical Articles from Bell System Sources . . . . . . . . . . 742--746 Anonymous Contributors to this Issue . . . . . . . 747--748