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Practical Radio Communication

1943 public domain textbook, Practical Radio Communication: principles, systems, equipment, operation, including very high and ultra-high frequencies and frequency modulation. CONTENTS CHAPTER 1 DIRECT-CURRENT ELECTRICITY AND MAGNETISM 1 PART I. ELEMENTARY ELECTRICITY: 1.1. Electric Charges and Forces; 1.2. Protons and Electrons; 1.3. Potential; 1.4. Free Electrons in Solid Conductors; 1.5. Electric Current; 1.6. Electromotive Force; 1.7. Current Strength and Quantity; 1.8. Electrical Resistance and Conductivity of Materials; 1.9. Ohm's Law; 1.10. Simple Electric Circuits; 1.11. The Shunt Law; 1.12. Kirchhoff's Laws; 1.13. Conductance; 1.14. Energy, Force, Work, and Power; 1.18. Electrical Power; 1.16. Load Matching; 1.17. E.M.F. Produced by Chemical Action; 1.18. Directions of Current Flow; 1.19. Local Action; 1.20. The Voltage of a Cell; 1.21. The Capacity of a Cell; 1.22. Connection Methods; 1.23. Internal Resistance of a Cell; 1.24. The Telephone Receiver and Transmitter. PART II. MAGNETISM AND ELECTROMAGNETISM: 1.26. Natural and Artificial Magnets; 1.26. Poles of a Magnet; 1.27. Magnetic Fields; 1.28. Magnetic Transparency and Leakage; 1.29. Theory of Magnetism; 1.30. Magnetic

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