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Harper's Electricity Book for Boys
Harper's Electricity Book for Boys

Chapter XVI

Chapter 16 of Harper's Electricity Book for Boys is here in full — 1676 sentences across 336 reading sections, with audio for every sentence and word.

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Context Illustration Reading 1/335 · 5 lines
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ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.
With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.
Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.
The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.
But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.
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LEARNER DICTIONARY
Archivist
/ˈɑːrkɪvɪst/
Editorial verification pending

A keeper or guardian of historical records and memories.

Harper's Electricity Book for Boys

Chapter XVI

Chapter 16 of Harper's Electricity Book for Boys is here in full — 1676 sentences across 336 reading sections, with audio for every sentence and word.

Reading 1/335 · 5 reading units · Lines 1–5

Line 1
ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.
Line 2
With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.
Line 3
Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.
/ˈmeni ʌv ðə θɪŋz ɪˈlektrɪkəl ðæt wiː ˌɔːrdəˈnerəli θɪŋk ʌv æz ˈmɑːdərn ˌɪnˈvenʃənz ɑːr ˈmɪrli ˈmɑːdərn ˌæpləˈkeɪʃənz ʌv fəˈnɑːmənə ðæt wɜːr dɪˈskʌvərd ˈmeni jɪrz əˈɡoʊ/
Line 4
The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.
Line 5
But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.
/bʌt fɔːr ˈpræktəkəl ˈpɜːrpəsəz ðə kənˈsuːmɪŋ ʌv zɪŋk ənd ˈkemɪkəlz ɪn sʌtʃ ˈbætəriz wɑːz tuː ɪkˈspensɪv ə weɪ tuː ˈdʒenəreɪt ɪˌlekˈtrɪsəti ənd prɪˈventɪd ˈeni kəˈmɜːrʃəl juːs ʌv ðə rɪˈzʌlts ʌv ðer ɪkˈsperəmənts ənˈtɪl ˈtʃiːpər ɪˌlekˈtrɪsəti kʊd biː hæd/

Learner Dictionary

These definitions explain words found in the current reading and keep every example grounded in its original sentence.

Oxford-style entry order: headword, part of speech, US IPA, concise definition, contextual example, and audio.

applications noun US /ˌæpləˈkeɪʃənz/

plural of “application” — the act of bringing something to bear; using it for a particular purpose

From this reading “Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.”

chemicals noun US /ˈkemɪkəlz/

plural of “chemical” — material produced by or used in a reaction involving changes in atoms or molecules

From this reading “But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.”

dynamic adjective US /daɪˈnæmɪk/

characterized by action or forcefulness or force of personality

From this reading “The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.”

dynamo noun US /ˈdaɪnəmoʊ/

generator consisting of a coil (the armature) that rotates between the poles of an electromagnet (the field magnet) causing a current to flow in the armature

From this reading “With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.”

galvanic adjective US /ɡælˈvænɪk/

pertaining to or producing electric current by chemical action

From this reading “The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.”

generate verb US /ˈdʒenəreɪt/

bring into existence

From this reading “But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.”

Welding noun US /ˈweldɪŋ/

fastening two pieces of metal together by softening with heat and applying pressure

From this reading “ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.”

zinc noun US /zɪŋk/

a bluish-white lustrous metallic element; brittle at ordinary temperatures but malleable when heated; used in a wide variety of alloys and in galvanizing iron; it occurs naturally as zinc sulphide in zinc blende

From this reading “But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.”

Word partnerships in these lines

English keeps certain words together, and knowing the pair is worth more than knowing each word alone. Every partnership below was counted across our whole published library, and earns its place by appearing far more often than two unrelated words of the same frequency would.

Shown as this reading writes them, with the form the library counts, what kind of pairing it is, and how often it occurs.

modern inventions adjective + noun counted as “modern invention”

In this reading “Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.”

practical purposes adjective + noun counted as “practical purpose”

In this reading “But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.”

many years adjective + noun

In this reading “Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.”

too expensive adverb + adjective

In this reading “But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.”

prevented any verb + adjective counted as “prevent any”

In this reading “But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.”

by using preposition + noun

In this reading “The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.”

think of verb + particle

keep in mind for attention or consideration

In this reading “Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.”

All words in this reading · 92

Every word in these five lines is listed here, and every one of them can be played on its own.

Dictionary details are shown only when verified; these are not licensed Oxford entries.

adeterminerUS /ə/

used before a singular noun to mean one of a group, when it is not a particular one

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

acknowledgeverbUS /ækˈnɑːlɪdʒ/

declare to be true or admit the existence or reality or truth of

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

agentnounUS /ˈeɪdʒənt/

an active and efficient cause; capable of producing a certain effect

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

agoadverbUS /əˈɡoʊ/

in the past

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

ANDconjunctionUS /ənd/

used to join words or parts of a sentence that go together

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

anyadjectiveUS /ˈeni/

one or some or every or all without specification

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

applicationsnounUS /ˌæpləˈkeɪʃənz/

plural of “application” — the act of bringing something to bear; using it for a particular purpose

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

areauxiliary verbUS /ɑːr/

the form of “be” used with you, we, they, or a plural noun

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

asconjunctionUS /æz/

at the same time that; because; in the way that

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

batteriesnounUS /ˈbætəriz/

plural of “battery” — group of guns or missile launchers operated together at one place

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

beauxiliary verbUS /biː/

used with a past participle to form the passive, or with -ing for continuous tenses

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

beganverbUS /bɪˈɡæn/

inflected form of “begin” — take the first step or steps in carrying out an action

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

ButconjunctionUS /bʌt/

used to introduce something that contrasts with what came before

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

byprepositionUS /baɪ/

showing who or what does the action

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

chapternounUS /ˈtʃæptər/

a subdivision of a written work; usually numbered and titled

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

cheaperadjectiveUS /ˈtʃiːpər/

comparative of “cheap” — relatively low in price or charging low prices

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

chemicalsnounUS /ˈkemɪkəlz/

plural of “chemical” — material produced by or used in a reaction involving changes in atoms or molecules

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

commercialadjectiveUS /kəˈmɜːrʃəl/

connected with or engaged in or sponsored by or used in commerce or commercial enterprises

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

CompanynounUS /ˈkʌmpəniː/

an institution created to conduct business

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

consumingadjectiveUS /kənˈsuːmɪŋ/

very strong; urgently felt

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

CoopernounUS /ˈkuːpər/

United States industrialist who built the first American locomotive; founded Cooper Union in New York City to offer free courses in the arts and sciences (1791-1883)

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

couldmodal verbUS /kʊd/

the past of “can”; used for possibility or polite requests

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

courtesynounUS /ˈkɜːrtəsi/

a courteous or respectful or considerate act

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

cutsnounUS /kʌts/

plural of “cut” — a share of the profits

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

desirenounUS /dɪˈzaɪər/

the feeling that accompanies an unsatisfied state

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

developmentnounUS /dɪˈveləpmənt/

act of improving by expanding or enlarging or refining

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

discoveredadjectiveUS /dɪˈskʌvərd/

discovered or determined by scientific observation

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

discoverynounUS /dɪˈskʌvəri/

the act of discovering something

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

dynamicadjectiveUS /daɪˈnæmɪk/

characterized by action or forcefulness or force of personality

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

dynamonounUS /ˈdaɪnəmoʊ/

generator consisting of a coil (the armature) that rotates between the poles of an electromagnet (the field magnet) causing a current to flow in the armature

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

ELECTRICadjectiveUS /ɪˈlektrɪk/

using or providing or producing or transmitting or operated by electricity

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

electricaladjectiveUS /ɪˈlektrɪkəl/

relating to or concerned with electricity

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

electricitynounUS /ɪˌlekˈtrɪsəti/

a physical phenomenon associated with stationary or moving electrons and protons

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

electro-magnets

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

etc

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

expensiveadjectiveUS /ɪkˈspensɪv/

high in price or charging high prices

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

experimentsnounUS /ɪkˈsperəmənts/

plural of “experiment” — the act of conducting a controlled test or investigation

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

ForprepositionUS /fɔːr/

intended to be given to, or used by, somebody

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

galvanicadjectiveUS /ɡælˈvænɪk/

pertaining to or producing electric current by chemical action

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

GeneraladjectiveUS /ˈdʒenərəl/

applying to all or most members of a category or group

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

generateverbUS /ˈdʒenəreɪt/

bring into existence

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

greatadjectiveUS /ɡreɪt/

relatively large in size or number or extent; larger than others of its kind

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

hadauxiliary verbUS /hæd/

the past form of “have”, used to form the past perfect

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

HEATnounUS /hiːt/

a form of energy that is transferred by a difference in temperature

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

Hewitt

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

improvementsnounUS /ˌɪmˈpruːvmənts/

plural of “improvement” — a change for the better; progress in development

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

inprepositionUS /ɪn/

inside something, or within a place, period, or state

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

inventionnounUS /ˌɪnˈvenʃən/

the creation of something in the mind

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

inventionsnounUS /ˌɪnˈvenʃənz/

plural of “invention” — the creation of something in the mind

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

LIGHTadjectiveUS /laɪt/

of comparatively little physical weight or density

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

ManyadjectiveUS /ˈmeni/

a quantifier that can be used with count nouns and is often preceded by “as” or “too” or “so” or “that”; amounting to a large but indefinite number

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

marvellousadjectiveUS /ˈmɑːrvələs/

extraordinarily good or great; used especially as intensifiers

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

master-workman

Dictionary entry pending editorial verification. Tap Listen to hear the word.

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

merelyadverbUS /ˈmɪrli/

and nothing more

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

modernadjectiveUS /ˈmɑːdərn/

belonging to the modern era; since the Middle Ages

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

ordinarilyadverbUS /ˌɔːrdəˈnerəli/

under normal conditions

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

performedverbUS /pərˈfɔːrmd/

past form of “perform” — carry out or perform an action

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

phenomenanounUS /fəˈnɑːmənə/

plural of “phenomenon” — any state or process known through the senses rather than by intuition or reasoning

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

pioneersnounUS /ˌpaɪəˈnɪrz/

plural of “pioneer” — someone who helps to open up a new line of research or technology or art

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

POWERnounUS /ˈpaʊər/

possession of controlling influence

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

practicaladjectiveUS /ˈpræktəkəl/

concerned with actual use or practice

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

preventedverbUS /prɪˈventɪd/

past form of “prevent” — keep from happening or arising; make impossible

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

provedadjectiveUS /pruːvd/

established beyond doubt

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

PublishersnounUS /ˈpʌblɪʃərz/

plural of “publisher” — a firm in the publishing business

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

purposesnounUS /ˈpɜːrpəsəz/

plural of “purpose” — an anticipated outcome that is intended or that guides your planned actions

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

resultsnounUS /rɪˈzʌlts/

plural of “result” — a phenomenon that follows and is caused by some previous phenomenon

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

reversibilitynoun

the quality of being reversible in either direction

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

sciencenounUS /ˈsaɪəns/

a particular branch of scientific knowledge

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

suchdeterminerUS /sʌtʃ/

of the kind already mentioned

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

telephonenounUS /ˈteləfoʊn/

electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

thatconjunctionUS /ðæt/

used to introduce what somebody said, thought, or felt

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

thedeterminerUS /ðə/

used before a noun that is already known, already mentioned, or the only one of its kind

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

theirdeterminerUS /ðer/

belonging to the people or things already mentioned

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

thingsnounUS /θɪŋz/

any movable possession (especially articles of clothing)

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

thinkverbUS /θɪŋk/

judge or regard; look upon; judge

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

thisdeterminerUS /ðɪs/

used for a person or thing that is near, or that has just been mentioned

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

ThomsonnounUS /ˈtɑːmsən/

United States composer who collaborated with Gertrude Stein (1896-1989)

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

toparticleUS /tuː/

used before the base form of a verb to make the infinitive

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

tooadverbUS /tuː/

to a degree exceeding normal or proper limits

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

untilprepositionUS /ənˈtɪl/

up to a particular time

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

usenounUS /juːs/

the act of using

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

usingnounUS /ˈjuːzɪŋ/

an act that exploits or victimizes someone (treats them unfairly)

From this reading The pioneers in the science of dynamic electricity performed their experiments with the electric light, electro-magnets, etc., by using galvanic batteries.

wasauxiliary verbUS /wɑːz/

the past form of “be” used with I, he, she, it, or a singular noun

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

waynounUS /weɪ/

how something is done or how it happens

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

wepronounUS /wiː/

the speaker together with one or more other people

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

WeldingnounUS /ˈweldɪŋ/

fastening two pieces of metal together by softening with heat and applying pressure

From this reading ELECTRIC LIGHT, HEAT, AND POWER For the use of the cuts in this chapter, the Publishers desire to acknowledge the courtesy of the General Electric Company, the Thomson Electric Welding Company, and the Cooper Hewitt Electric Company.

wereauxiliary verbUS /wɜːr/

the past form of “be” used with you, we, they, or a plural noun

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

whichpronounUS /wɪtʃ/

used to introduce a clause giving more about a thing just mentioned

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

WithprepositionUS /wɪð/

in the company of; together with

From this reading With the discovery of the reversibility of the dynamo, the invention of the telephone, and the improvements in the electric light began the great modern development of electricity which proved that marvellous agent to be a master-workman.

yearsnounUS /jɪrz/

a late time of life

From this reading Many of the things electrical that we ordinarily think of as modern inventions are merely modern applications of phenomena that were discovered many years ago.

zincnounUS /zɪŋk/

a bluish-white lustrous metallic element; brittle at ordinary temperatures but malleable when heated; used in a wide variety of alloys and in galvanizing iron; it occurs naturally as zinc sulphide in zinc blende

From this reading But for practical purposes the consuming of zinc and chemicals in such batteries was too expensive a way to generate electricity, and prevented any commercial use of the results of their experiments until cheaper electricity could be had.

Chapter 16 of Harper's Electricity Book for Boys by Joseph H. (Joseph Henry) Adams holds 1676 sentences, grouped into 336 reading sections of at most 5 sentences. The text is the source edition, unabridged, and the chapter records which sentences cover which part of the work so that nothing is dropped. Every word can be tapped for its pronunciation and dictionary entry.

What does chapter 16 of Harper's Electricity Book for Boys contain?

Chapter 16 holds 1676 sentences of Harper's Electricity Book for Boys, unabridged, divided into 336 reading sections.

This page carries chapter 16 of Harper's Electricity Book for Boys by Joseph H. (Joseph Henry) Adams exactly as it stands in the source edition, without abridgement. It runs to 1676 sentences, grouped into 336 sections of at most 5 sentences so that a reader can take the chapter in steady, finishable pieces. The chapter also stores a coverage record mapping every one of its sentences to a part of the work, which is how the edition demonstrates that no line was dropped.

How do I study chapter 16 of Harper's Electricity Book for Boys?

Work through the 336 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 336 sections in this chapter is short enough to read once, hear once, and then re-read with the vocabulary in view. Tapping a word plays it alone and opens its dictionary entry with IPA, part of speech and meaning, so the reader is never forced to guess a pronunciation from spelling. Working section by section keeps a long chapter from becoming an undifferentiated wall of text, which is the usual reason a reader abandons a work of this period.

Can chapter 16 be read aloud to me?

Yes — every sentence and every individual word in chapter 16 can be played aloud in United States English.

Audio covers the whole chapter: any sentence can be played, and any single word within it can be played on its own. The voice uses United States English. For a work of this period that matters, because spelling is an unreliable guide to pronunciation for vocabulary that has fallen out of daily use, and a learner who guesses wrong tends to keep the error. Hearing the word in its own sentence, and then alone, settles it.

Questions about reading Harper's Electricity Book for Boys

Common questions about reading Harper's Electricity Book for Boys by Joseph H. (Joseph Henry) Adams on this page, its source edition and its audio.

Is this the complete text of Harper's Electricity Book for Boys?

Yes. All 4571 sentences of Project Gutenberg eBook #64592 are kept, with a record of which sentences cover which part.

Which edition of Harper's Electricity Book for Boys is used?

Project Gutenberg eBook #64592, unabridged. The Project Gutenberg header, footer and licence are removed.

How long does Harper's Electricity Book for Boys take to read?

About 380 minutes of reading across 915 sections of 5 sentences each, at an unhurried pace.

How to read Harper's Electricity Book for Boys section by section

How to work through Harper's Electricity Book for Boys section by section, using the audio and the tap-to-define vocabulary.

  1. Open a chapter

    Choose one of the 16 chapters of Harper's Electricity Book for Boys to begin.

  2. Read one section

    Each section holds 5 sentences; read it once through.

  3. Listen and tap

    Play the section aloud, then tap any unfamiliar word for its entry.

Vocabulary met early in Harper's Electricity Book for Boys

Words and structures a reader meets early in Harper's Electricity Book for Boys, each tappable for pronunciation and meaning.

Printed
A word that appears in the opening chapter of Harper's Electricity Book for Boys; the reader can tap it to hear it and see its dictionary entry.
Italics
A word that appears in the opening chapter of Harper's Electricity Book for Boys; the reader can tap it to hear it and see its dictionary entry.
Transcribed
A word that appears in the opening chapter of Harper's Electricity Book for Boys; the reader can tap it to hear it and see its dictionary entry.
Between
A word that appears in the opening chapter of Harper's Electricity Book for Boys; the reader can tap it to hear it and see its dictionary entry.