| Chapter 1 Introduction to Lightning |
| 1.1 Lightning and Thunderclouds |
| 1.2 The Stepped Leader |
| 1.3 The Return Stroke |
| 1.4 The Dart Leader |
| 1.5 More on Strokes and Flashes |
| 1.6 Intracloud Discharges |
| 1.7 Strokes Bringing Positive Charge to Earth |
| 1.8 Strokes with Upward-developing Leaders |
| 1.9 Other Lightning Forms |
| References |
| Chapter 2 Lightning Photography |
| 2.1 Early Studies |
| 2.2 The Boys Camera |
| 2.3 The South African Work |
| 2.3.1 Introduction |
| 2.3.2 The stepped leader |
| 2.3.3 Dart and dart-stepped leaders |
| 2.3.4 First return strokes |
| 2.3.5 Subsequent return strokes |
| 2.3.6 Branch components and M components |
| 2.3.7 Miscellaneous |
| 2.4 Lightning Photography in the United States |
| 2.4.1 Introduction |
| 2.4.2 The Empire State Building study |
| 2.4.3 The Pittsfield study |
| 2.5 Recent Studies |
| 2.5.1 Introduction |
| 2.5.2 Lightning photography in Arizona |
| 2.5.3 Lightning photography in New Mexico |
| 2.5.4 Lightning photography in Switzerland |
| References |
| Chapter 3 Electric and Magnetic Field Measurements |
| 3.1 Introduction |
| 3.2 Electrostatics |
| 3.3 Magnetostatics |
| 3.4 Electromagnetlcs |
| 3.5 Field-measuring Apparatus |
| 3.5.1 Electronic measurement of electric field intensity |
| 3.5.2 The field mill or electrostatic fluxmeter |
| 3.5.3 Miscellaneous electric field measuring techniques |
| 3.5.4 Magnetic field measurements |
| 3.6 Early Electrostatic Field Measurements: The Electric-dipole Cloud Model |
| 3.7 The Electrostatic Field Change Due to Cloud-to-Ground Lightning |
| 3.7.1 Introduction |
| 3.7.2 The stepped leader |
| 3.7.3 The dart leader |
| 3.7.4 The return stroke |
| 3.7.5 Processes occurring between strokes |
| 3.7.6 Discharges lowering positive charge to earth |
| 3.8 The Electrostatic Field Change Due to Cloud Discharges |
| 3.9 The Magnetostatic Fields of Lightning |
| 3.10 The Radiation Fields of Lightning |
| References |
| Chapter 4 Current Measurements |
| 4.1 Introduction |
| 4.2 Measurement Techniques |
| 4.2.1 Instruments using Lichtenberg figures |
| 4.2.2 Instruments using magnetizable materials |
| 4.2.3 The noninductive shunt and oscilloscope |
| 4.2.4 The loop antenna and oscilloscope |
| 4.2.5 Miscellaneous measurement techniques |
| 4.3 Current in Cloud-to-ground Lightning Discharges |
| 4.4 Discharges Initiated by Upward-moving Lead |
| 4.5 Other Current Measurements |
| References |
| Chapter 5 Lightning Spectroscopy |
| 5.1 Early History |
| 5.2 Experimental Techniques |
| 5.2.1 The slit spectrometer |
| 5.2.2 The slitless spectrometer |
| 5.2.3 Quantitative spectroscopic measurements from photographic film |
| 5.2.4 Spectroscopy utilizing photoelectric detectors |
| 5.3 Theory |
| 5.4 Lightning Spectroscopy: 1940-1960 |
| 5.5 Lightning Spectroscopy after 1960 |
| 5.5.1 General |
| 5.5.2 Return-stroke properties |
| References |
| Chapter 6 Thunder |
| 6.1 Early History |
| 6.2 The Experimental Data |
| 6.3 Ideas and Theories |
| 6.3.1 The shock wave |
| 6.3.2 The sound wave |
| References |
| Chapter 7 Theory: The Discharge Processes |
| 7.1 Introduction |
| 7.2 Discharge Mechanisms |
| 7.2.1 Introduction |
| 7.2.2 Discharge phenomena in the absence of appreciable space charge |
| 7.2.3 Discharge phenomena in the presence of space charge |
| 7.3 Some Rough Calculations |
| 7.3.1 Some electrostatic relations |
| 7.3.2 Cloud-charge dimensions and leader radius |
| 7.3.3 The cloud-to-ground potential difference and energy available for lightning |
| 7.4 Stepped-leader Theories |
| 7.4.1 The experimental data |
| 7.4.2 The two original theories of the stepped leader |
| 7.4.3 Other stepped-leader theories |
| 7.4.4 Stepped-leader initiation |
| 7.5 Dart-leader Theories |
| 7.6 Return-stroke Theories |
| 7.7 The Lightning Channel between Strokes |
| References |
| Appendix A Some Suggestions for Future Lightning Research |
| Appendix B Bead Lightning |
| Appendix C Ball Lightning |
| Appendix D Recent Developments |
| Appendix E Review of Natural Lightning: Experimental Data and Modeling |
| Name Index |
| Subject Index |