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

Chapter XII

Chapter 12 of Harper's Electricity Book for Boys is here in full — 248 sentences across 50 reading sections, with audio for every sentence and word.

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Context Illustration Reading 1/49 · 5 lines
English subtitles · tap any word to listen 1 / 5
GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.
In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.
Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.
Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.
Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.
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AI-generated narration by OpenAI · Slow US English
LEARNER DICTIONARY
Archivist
/ˈɑːrkɪvɪst/
Editorial verification pending

A keeper or guardian of historical records and memories.

Harper's Electricity Book for Boys

Chapter XII

Chapter 12 of Harper's Electricity Book for Boys is here in full — 248 sentences across 50 reading sections, with audio for every sentence and word.

Reading 1/49 · 5 reading units · Lines 1–5

Line 1
GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.
Line 2
In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.
/ɪn ˌsaɪənˈtɪfɪk ˈlæŋɡwədʒ ðə ˈprɑːses ɪz noʊn æz ɪˌlekˈtrɑːləsəs ənd ˌɪnˈvɑːlvz ðə ˌsepərˈeɪʃən ʌv ə ˈkeməkəl ˈkɑːmpaʊnd ˈɪntuː ɪts kənˈstɪtʃuːənt pɑːrts ɔːr ˈeləmənts baɪ ðə ˈækʃən ʌv æn ɪˈlektrɪk ˈkɜːrənt ənd ðə ˈprɑːpər ˌæpərˈætəs/
Line 3
Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.
Line 4
Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.
/ˈwɔːtər ɔːr ˈwɔːtər wɪð ˈmɪkstʃərz ʌv ˈkemɪkəlz sʌtʃ æz ˈsʌlfeɪt ʌv ˈkɑːpər ˈsʌlfeɪt ʌv zɪŋk ˈklɔːraɪd ʌv ˈnɪkəl ˈsaɪənaɪd ənd ˈnaɪtreɪt ʌv ˈsɪlvər ɔːr jərˈeɪniəm ənd ˈʌðər məˈtælɪk sɔːlts ɑːr ɡʊd kənˈdʌktərz/
Line 5
Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

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.

chloride noun US /ˈklɔːraɪd/

any compound containing a chlorine atom

From this reading “Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.”

cyanide noun US /ˈsaɪənaɪd/

any of a class of organic compounds containing the cyano radical -CN

From this reading “Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.”

electrolysis noun US /ɪˌlekˈtrɑːləsəs/

(chemistry) a chemical decomposition reaction produced by passing an electric current through a solution containing ions

From this reading “In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.”

electrolyte noun US /ɪˌlektrɑːˈlaɪt/

a solution that conducts electricity

From this reading “Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.”

experimenter noun US /ɪkˈsperəmentər/

a research worker who conducts experiments

From this reading “GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.”

nitrate noun US /ˈnaɪtreɪt/

any compound containing the nitrate group (such as a salt or ester of nitric acid)

From this reading “Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.”

sulphate noun US /ˈsʌlfeɪt/

a salt or ester of sulphuric acid

From this reading “Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.”

uranium noun US /jərˈeɪniəm/

a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

From this reading “Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.”

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.

electric current adjective + noun

a flow of electricity through a conductor

In this reading “In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.”

most fascinating adverb + adjective

In this reading “GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.”

pass through verb + particle

make a passage or journey from one place to another

In this reading “Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.”

take place verb + noun

come to pass

In this reading “Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.”

All words in this reading · 89

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 In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

actionnounUS /ˈækʃən/

something done (usually as opposed to something said)

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

andeterminerUS /æn/

the form of “a” used before a word that begins with a vowel sound

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

ANDconjunctionUS /ənd/

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

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

apparatusnounUS /ˌæpərˈætəs/

equipment designed to serve a specific function

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

areauxiliary verbUS /ɑːr/

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

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

asconjunctionUS /æz/

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

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

averageadjectiveUS /ˈævərɪdʒ/

approximating the statistical norm or average or expected value

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

beauxiliary verbUS /biː/

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

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

boynounUS /bɔɪ/

a youthful male person

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

byprepositionUS /baɪ/

showing who or what does the action

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

calledverbUS /kɔːld/

past form of “call” — assign a specified (usually proper) proper name to

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

cannot

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

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

chemicaladjectiveUS /ˈkeməkəl/

relating to or used in chemistry

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

chemicalsnounUS /ˈkemɪkəlz/

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

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

chloridenounUS /ˈklɔːraɪd/

any compound containing a chlorine atom

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

commonlyadverbUS /ˈkɑːmənli/

under normal conditions

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

compoundnounUS /ˈkɑːmpaʊnd/

a whole formed by a union of two or more elements or parts

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

conductornounUS /kənˈdʌktər/

the person who leads a musical group

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

conductorsnounUS /kənˈdʌktərz/

plural of “conductor” — the person who leads a musical group

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

constituentnounUS /kənˈstɪtʃuːənt/

an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

coppernounUS /ˈkɑːpər/

a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

currentnounUS /ˈkɜːrənt/

a flow of electricity through a conductor

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

cyanidenounUS /ˈsaɪənaɪd/

any of a class of organic compounds containing the cyano radical -CN

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

electricadjectiveUS /ɪˈlektrɪk/

using or providing or producing or transmitting or operated by electricity

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

electricitynounUS /ɪˌlekˈtrɪsəti/

a physical phenomenon associated with stationary or moving electrons and protons

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

ELECTRO-PLATING

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

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

electrolysisnounUS /ɪˌlekˈtrɑːləsəs/

(chemistry) a chemical decomposition reaction produced by passing an electric current through a solution containing ions

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

electrolytenounUS /ɪˌlektrɑːˈlaɪt/

a solution that conducts electricity

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

elementsnounUS /ˈeləmənts/

violent or severe weather (viewed as caused by the action of the four elements)

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

experimenternounUS /ɪkˈsperəmentər/

a research worker who conducts experiments

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

fascinatingadjectiveUS /ˈfæsəneɪtɪŋ/

capable of arousing and holding the attention

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

GALVANISMnoun

electricity produced by chemical action

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

goodadjectiveUS /ɡʊd/

having desirable or positive qualities especially those suitable for a thing specified

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

howeveradverbUS /ˌhaʊˈevər/

used to add a contrasting statement

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

InprepositionUS /ɪn/

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

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

intoprepositionUS /ˈɪntuː/

moving to the inside of something

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

involvesverbUS /ˌɪnˈvɑːlvz/

third-person singular of “involve” — connect closely and often incriminatingly

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

isauxiliary verbUS /ɪz/

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

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

itpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

itsdeterminerUS /ɪts/

belonging to the thing or animal already mentioned

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

knownadjectiveUS /noʊn/

apprehended with certainty

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

languagenounUS /ˈlæŋɡwədʒ/

a systematic means of communicating by the use of sounds or conventional symbols

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

lightadjectiveUS /laɪt/

of comparatively little physical weight or density

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

liquidadjectiveUS /ˈlɪkwəd/

existing as or having characteristics of a liquid; especially tending to flow

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

matternounUS /ˈmætər/

a vaguely specified concern

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

maymodal verbUS /meɪ/

used to say something is possible, or to give permission

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

metallicadjectiveUS /məˈtælɪk/

containing or made of or resembling or characteristic of a metal

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

mixturesnounUS /ˈmɪkstʃərz/

plural of “mixture” — (chemistry) a substance consisting of two or more substances mixed together (not in fixed proportions and not with chemical bonding)

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

mostadverbUS /moʊst/

used to form the superlative

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

nickelnounUS /ˈnɪkəl/

a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and millerite

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

nitratenounUS /ˈnaɪtreɪt/

any compound containing the nitrate group (such as a salt or ester of nitric acid)

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

nodeterminerUS /noʊ/

not any; not one

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

non-conductor

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

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

notadverbUS /nɑːt/

used to make a word, phrase, or sentence negative

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

OilnounUS /ɔɪl/

A viscous liquid derived from petroleum or plants, stored in large earthen jars.

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

onepronounUS /wʌn/

used to mean any person in general, including the speaker

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

orconjunctionUS /ɔːr/

used to join alternatives or possibilities

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

otheradjectiveUS /ˈʌðər/

not the same one or ones already mentioned or implied

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

partsnounUS /pɑːrts/

the local environment

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

passverbUS /pæs/

go across or through

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

placenounUS /pleɪs/

a point located with respect to surface features of some region

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

pressurenounUS /ˈpreʃər/

the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

processverbUS /ˈprɑːses/

subject to a process or treatment, with the aim of readying for some purpose, improving, or remedying a condition

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

properadjectiveUS /ˈprɑːpər/

marked by suitability or rightness or appropriateness

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

putverbUS /pʊt/

put into a certain place or abstract location

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

relationnounUS /riˈleɪʃən/

an abstraction belonging to or characteristic of two entities or parts together

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

saltsnounUS /sɔːlts/

plural of “salt” — a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

scientificadjectiveUS /ˌsaɪənˈtɪfɪk/

of or relating to the practice of science

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

separationnounUS /ˌsepərˈeɪʃən/

the state of lacking unity

From this reading In scientific language the process is known as electrolysis, and involves the separation of a chemical compound into its constituent parts or elements by the action of an electric current and the proper apparatus.

silvernounUS /ˈsɪlvər/

a soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

SimpleadjectiveUS /ˈsɪmpəl/

having few parts; not complex or complicated or involved

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

suchdeterminerUS /sʌtʃ/

of the kind already mentioned

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

sulphatenounUS /ˈsʌlfeɪt/

a salt or ester of sulphuric acid

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

takeverbUS /teɪk/

carry out

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

tanknounUS /tæŋk/

an enclosed armored military vehicle; has a cannon and moves on caterpillar treads

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

thedeterminerUS /ðə/

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

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

throughprepositionUS /θruː/

from one end or side of something to the other

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

ToparticleUS /tuː/

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

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

unlessconjunctionUS /ənˈles/

except if; if not

From this reading Electrolysis cannot take place, however, unless the liquid in the tank, commonly called the electrolyte (no relation to electric light), is a conductor.

uraniumnounUS /jərˈeɪniəm/

a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

usesnounUS /ˈjuːsəz/

plural of “use” — the act of using

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

WaternounUS /ˈwɔːtər/

binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

whatpronounUS /wʌt/

used to ask for information about something

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

whichpronounUS /wɪtʃ/

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

From this reading GALVANISM AND ELECTRO-PLATING Simple Electro-plating To the average boy experimenter, electro-plating is one of the most fascinating of the uses to which electricity may be put.

willmodal verbUS /wɪl/

used to talk about the future, or about willingness

From this reading Oil is a non-conductor, and a current will not pass through it, no matter what the pressure may be.

withprepositionUS /wɪð/

in the company of; together with

From this reading Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

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 Water, or water with mixtures of chemicals, such as sulphate of copper, sulphate of zinc, chloride of nickel, cyanide and nitrate of silver, or uranium and other metallic salts, are good conductors.

Chapter 12 of Harper's Electricity Book for Boys by Joseph H. (Joseph Henry) Adams holds 248 sentences, grouped into 50 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 12 of Harper's Electricity Book for Boys contain?

Chapter 12 holds 248 sentences of Harper's Electricity Book for Boys, unabridged, divided into 50 reading sections.

This page carries chapter 12 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 248 sentences, grouped into 50 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 12 of Harper's Electricity Book for Boys?

Work through the 50 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 50 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 12 be read aloud to me?

Yes — every sentence and every individual word in chapter 12 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.