INDEX-2 Ground-plane antenna, 4-46 H Half-wave antennas, 4-18 I Induction field, electromagnetic fields, 2-2 Intensity of sound, 1-20 Interference, acoustics, 1-24 Introduction to transmission lines, 3-1 Ionosphere, 2-15 ionization, 2-19 layers, 2-19 recombination, 2-19 L Length of a transmission line, 3-8 Light waves, 1-25 comparison of light waves and sound waves, 1-32 electromagnetic theory of light, 1-26 frequencies and color, 1-27 frequencies and wavelengths, 1-27 light and color, 1-28 luminous bodies, 1-28 propagation of light, 1-25 properties of light, 1-28 Loading, antenna, 4-17 Longitudinal waves, wave motion, 1-5 Long-wire antennas, 4-41 Losses in transmission lines, 3-7 Luminous bodies, 1-28 Lumped constants, 3-10 M Medium, wave motion, 1-6 Mediums, types of transmission, 3-2 Multipath fading, 2-26 N Noise, acoustics, 1-25 P Parasitic arrays, 4-35 Phasing, 4-26 Pitch of sound, 1-20 Polarization, 4-9 Polarization, radio waves, 2-10 Precipitation attenuation, 2-34 fog, 2-35 hail, 2-35 rain, 2-34 snow, 2-35 Principles of antenna radiation, 4-2 Principles of transmission lines, 3-1 length of a transmission line, 3-8 losses in transmission lines, 3-7 reflections on a transmission line, 3-28 terminology, 3-2 transmission line theory, 3-10 types of transmission mediums, 3-2 Propagation paths, 2-24 Properties of light, 1-25 Q Quality of sound, 1-21 Quarter-wave antennas, 4-21 R Radiation fields, 2-4 Radiation of electromagnetic energy, 4-6 Radiation resistance, 4-12 Radiation types and patterns, 4-12 Radio wave propagation, 2-1 effect of the earths atmosphere on radio waves, 2-14 electromagnetic fields, 2-2 radio waves, 2-6 tropospheric propagation, 2-36 weather versus propagation, 2-34 Radio wave transmission, 2-15 ground wave, 2-16 sky wave, 2-18