CONTENTS ABBREVIATIONS 11 SYMBOLS 13 UNITS AND PREFIXES 13 THEORETICAL SIGNS 14 VALVE SYMBOLS 15 STANDARD UNITS 16 FORCE 17 ENERGY 18 HEAT 19 TIME 19 UNIT EQUIVALENTS 20 POWER 21 ELECTRICAL EQUATIONS 21 FREQUENCY 22 WAVELENGTH OF TUNED CIRCUIT 22 INDUCTANCE 22 INDUCTIVE REACTANCE 22 CAPACITY OF VARIABLE CONDENSERS 23 H.F. TRANSFORMER RATIO 23 CAPACITY OF FIXED CONDENSERS 24 OHM'S LAW 24 RESISTANCES IN PARALLEL 24 RESISTANCES IN SERIES 24 CONDENSERS IN PARALLEL 24 CONDENSERS IN SERIES 24 RESISTANCE, CAPACITY AND INDUCTANCE IN SERIES 24 REACTANCE OF COIL 25 REACTANCE OF CONDENSER 25 NET REACTANCE 25 WAVELENGTH FORMULA 25 RESISTANCE OF TUNED CIRCUIT 25 MAGNIFICATION OF TUNED CIRCUITS 25 CURRENT IN SERIES CIRCUIT 25 PEAK SEPARATION (BAND-PASS) 25 INDUCTANCE OF SINGLE-LAYER COIL 25 VALVE BASE CONNECTIONS 26 VALVE LEG SPACING 31 NATURAL WAVELENGTH OF AERIAL 32 REFLECTOR AERIALS 32 FRAME AERIAL DATA 33 LONG-WAVE COIL DATA 34 MEDIUM-WAVE COIL DATA 35 SHORT-WAVE COIL DATA 36 TRANSFORMER DATA 45 STALLOY CORE STAMPINGS 45 MAINS TRANSFORMER DATA 46 CRYSTAL DATA 46 CRYSTAL COMBINATIONS 46 RESISTANCES FOR VOLTAGE DROPPING 47 RESISTANCES FOR DECOUPLING 47 ACCUMULATOR DATA 49 CURRENT-CARRYING CAPACITY OF LAMPS 49 ACCUMULATOR PASTES 50 NEUTRALISING SPILLED ELECTROLYTE 51 JELLY ELECTROLYTE 51 H.T. METAL RECTIFIERS 52 H.F. METAL RECTIFIERS 53 L.T. METAL RECTIFIERS 54 DIELECTRIC CONSTANTS 55 DIELECTRIC STRENGTHS 55 SPECIFIC RESISTANCE OF MATERIALS 56 WEIGHT OF SHEET EBONITE 57 WEIGHT OF 1 CUBIC INCH OF METAL 57 BRITISH ASSOCIATION SCREWS 58 DRILLS AND DRILLING 59 TWIST DRILL GAUGE SIZES 60 LETTER SIZES OF DRILLS 60 WOOD-SCREW PROPORTIONS 61 TWIST DRILLS FOR WOOD-SCREWS 61 STANDARD WOOD-SCREWS 62 WOOD-SCREW PROPORTIONS 63 DENSITY OF SOLIDS AND LIQUIDS 64 WAVELENGTH-FREQUENCY CONVERSION TABLE 65 STANDARD COLOUR CODES 66 INTERNATIONAL "Q" CODE 68 MISCELLANEOUS INTERNATIONAL ABBREVIATIONS 70 AMATEUR ABBREVIATIONS 70 "QSA" CODE 71 "QRK" CODE 71 "RST" CODE 71 INTERNATIONAL MORSE CODE 72 INTERNATIONAL AMATEUR CALL-SIGNS 73 PHONETIC ALPHABET 75 AMATEUR WAVE-BANDS 76 COPPER WIRE DATA 77 WIRE AND SHEET-METAL GAUGES 79 RELATIONSHIP BETWEEN DECIBELS AND POWER RATIO 83 GREEK ALPHABET 83 FREQUENCY OF MUSICAL NOTES 84 HORSE-POWER 85 CHORDS OF CIRCLES 86 METALLIC ELEMENTS AND THEIR PROPERTIES 87 FLUXES FOR SOLDERING 90 COMPOSITION OF SOFT SOLDERS 90 COMPOSITION OF HARD SOLDERS 90 TABLE OF DECIMAL EQUIVALENTS 91 METRIC SYSTEM 92 METRIC CONVERSION FACTORS 93 EQUIVALENTS OF IMPERIAL AND METRIC WEIGHTS AND MEASURES 95 MENSURATION 97 TRIGONOMETRICAL FORMULAS 102 TRIGONOMETRICAL EQUIVALENTS 16 TRIGONOMETRICAL FUNCTIONS 106 TABLE OF SLIDE RULE GAUGE POINTS 107 POWERS AND ROOTS OF n AND g 110 POWERS AND ROOTS 111 RESISTANCE OF METALS AND ALLOYS 114 ENGLISH WEIGHTS AND MEASURES 116 NATURAL SINES, COSINES AND TANGENTS 119 LOGARITHMS 125 ANTILOGARITHMS 129 INDEX 133 Digitized by Google., Electronic reproduction, Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002, digitized, Print version record