CHAPTER IV. TRAVELING WAVES. 457 20. Different forms of the equations of the traveling wave. 457 CONTENTS. xxiii PAGE 21. Component waves and single traveling wave. Attenua- tion. 459 22. Effect of inductance, as loading, and leakage, on attenu- ation. Numerical example of telephone circuit. 462 23. Traveling sine wave and traveling cosine wave. Ampli- tude and wave front. 464 24. Discussion of traveling wave as function of distance, and of time. 466 25. Numerical example, and its discussion. 469 26. The alternating-current long-distance line equations as special case of a traveling wave. 471 27. Reduction of the general equations of the special traveling wave to the standard form of alternating-current trans- mission line equations. 474