책소개 책소개 보이기/감추기 호킨스 전기의 안내서.Hawkins Electrical Guide, Number One, by Nehemiah Hawkins<br/>호킨스의 전기 논문으로 전기에 대한 모든 것을 기록한책. 미국의 에디슨이 전기를 발견한후에 1914년도에 발달된 전기를 만든 안내 책자.<br/>Hawkins Electrical Guide, Number One <br/> Questions, Answers, & Illustrations, A Progressive Course <br/> of Study for Engineers, Electricians, Students and Those <br/> Desiring to acquire a Working Knowledge of Electricity and <br/> its Applications <br/>？ Author: Nehemiah Hawkins <br/>A PROGRESSIVE COURSE OF STUDY <br/>FOR ENGINEERS, ELECTRICIANS, STUDENTS <br/>AND THOSE DESIRING TO ACQUIRE A <br/>WORKING KNOWLEDGE OF <br/> <br/>ELECTRICITY AND ITS APPLICATIONS <br/> <br/>A PRACTICAL TREATISE <br/> <br/>by <br/> <br/>HAWKINS AND STAFF <br/> <br/>THEO. AUDEL & CO. 72 FIFTH AVE. NEW YORK. <br/>COPYRIGHTED, 1914, <br/>BY <br/>THEO. AUDEL & CO., <br/>NEW YORK. <br/> <br/>Printed in the United States. 더보기
목차 목차 보이기/감추기 TABLE OF CONTENTS GUIDE NO. 1. <br/>INTRODUCTORY CHAPTER <br/>SIGNS AND SYMBOLS <br/>ELECTRICITY 1 to 4<br/>Nature and source―kinds of electricity: static, current, dynamic, <br/>radiated, positive, negative, atmospheric, frictional, resinous, <br/>vitreous. <br/>STATIC ELECTRICITY 5 to 26<br/>Electrical attraction and repulsion―the charge―distribution of the <br/>charge―free and bound electricity―conductors and insulators―<br/>electroscopes―gold leaf electroscope―electric screens―<br/>electrification by induction―nature of the induced charge―the <br/>electrophorus―condensers; Leyden jar―electric machines―<br/>action of Toepler- Holtz machine―Wimshurst machines.<br/>THE ELECTRIC CURRENT <br/>27 to <br/>34<br/>Volt―ampere―ohm―Ohm’s law―production of the electric <br/>current―current strength―voltage drop in an electric current. <br/>PRIMARY CELLS <br/>35 to <br/>67<br/>The word “battery”―action of cell―chemical changes; <br/>polarization―effects of polarization―methods of depolarization―<br/>depolarizers―depolarizer bag―Volta’s contact law―contact <br/>series of metals―laws of chemical action in cell―requirements of <br/>a good cell―single and two fluid cells―the Leclanche cell―Fuller <br/>bichromate cell―the Edison cell―Grenet bichromate cell―Daniell <br/>cell―directions for making a Daniell cell―gravity cells―Daniell <br/>gravity cell―so- called “ dry” cells―points relating to dry cells―<br/>care of cells―cleanliness―separating the elements―creeping―<br/>amalgamated zinc―battery connections. <br/>CONDUCTORS AND INSULATORS <br/>68 to <br/>74<br/>The so- called “ non- conductors” ―table of conductors and <br/>insulators―mode of transmission―effect of heat―heating effect <br/>of the current―insulators―impregnating compounds―water as a <br/>conductor. <br/>RESISTANCE AND CONDUCTIVITY <br/>75 to <br/>82<br/>Standard of resistance―conductivity of metals and liquids―effect <br/>of heat―laws of electrical resistance―conductivity―specific <br/>conductivity―divided circuits. <br/>ELECTRICAL AND MECHANICAL ENERGY <br/>83 to <br/>92<br/>Definitions: energy, matter, molecule, work, foot- pound, volt？coulomb, ampere- hour, power, horse power, watt, kilowatt, <br/>watt- hour―mechanical equivalent of heat―British thermal unit―<br/>electrical horse power―the farad. <br/>EFFECTS OF THE CURRENT <br/>93 to <br/>104<br/>Thermal effect―use of heat from the current―magnetic effect―<br/>chemical effect―electrolysis―electro- chemical series―electric <br/>osmose―electric distillation―muscular contractions―<br/>electroplating―electrotyping. <br/>MAGNETISM <br/>105 to <br/>124<br/>Two kinds of magnetism―nature of each―poles―magnetic <br/>field―magnetic force―magnetic circuit―magnetic flux―the <br/>Maxwell―the Gauss―magnetic effect of the current―corkscrew <br/>rule―solenoids―permeability―magnetic saturation―<br/>magnetomotive force―reluctance―analogy between electric and <br/>magnetic circuits―hystereses―residual magnetism. <br/>ELECTROMAGNETIC INDUCTION <br/>125 to <br/>136<br/>Faraday’s discovery―Faraday’s machine―Faraday’s principle―<br/>line of force―induction of current―laws of electromagnetic <br/>induction―rules for direction of induced current―Fleming’s <br/>rule―Ampere’s rule―the palm rule―self- induction. <br/>INDUCTION COILS <br/>137 to <br/>154<br/>Self- induction―mutual induction―primary induction coils―<br/>secondary induction coils―plain secondary induction coils―<br/>secondary induction coils with vibrator and condenser; cycle of <br/>action―magnetic vibrators―vibrator adjustment―table of <br/>induction coil dimensions―table of sparking distances in air―<br/>points relating to induction coils―wiring diagram. <br/>THE DYNAMO <br/>155 to <br/>160<br/>Operation―essential parts―field magnets―armature―<br/>construction of dynamos―parts; bed plate, field magnets, <br/>armature, commutator, brushes. <br/>THE DYNAMO: BASIC PRINCIPLES <br/>161 to <br/>170<br/>Definitions―essential parts―elementary alternator―operation―<br/>direction of induced current―application of Fleming’s rule―cycle <br/>of operation―the sine curve; its construction and application. <br/>THE DYNAMO: CURRENT COMMUTATION <br/>171 to <br/>180<br/>How the current is produced―how direct current is obtained―the <br/>commutator―inductors―“ continuous current” ―action of four <br/>coil elementary dynamo―conditions for steadiness of the current.<br/>CLASSES OF DYNAMO <br/>181 to <br/>198<br/>Classification―bipolar and multi- polar dynamos―difference <br/>between dynamo and magneto―self- exciting dynamo―the <br/>series dynamo―regulation of series dynamo; difficulties <br/>experienced―the shunt dynamo―adaptation―operation―<br/>characteristic―regulation―the compound dynamo―service <br/>intended for―regulation―over compounding―usual degree of <br/>over compounding―short shunt―long shunt―voltage of short <br/>and long shunt machines―separately excited dynamos―<br/>Dobrowolski three wire dynamo.<br/>FIELD MAGNETS <br/>199 to <br/>220<br/>Object―essential parts―classes of field magnet―multi- polar <br/>field magnets―construction―choice of materials―design―pole <br/>pieces―eddy current―laminated fields―construction to reduce <br/>reluctance of the magnetic circuit―magnetizing coils―methods <br/>of winding―coil ends―insulation―attachment of coils―coil <br/>connections―heating―ventilation. 더보기
