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

Chapter VII

Chapter 7 of Harper's Electricity Book for Boys is here in full — 189 sentences across 38 reading sections, with audio for every sentence and word.

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Context Illustration Reading 1/37 · 5 lines
English subtitles · tap any word to listen 1 / 5
CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.
When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.
All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.
The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.
This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.
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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 VII

Chapter 7 of Harper's Electricity Book for Boys is here in full — 189 sentences across 38 reading sections, with audio for every sentence and word.

Reading 1/37 · 5 reading units · Lines 1–5

Line 1
CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.
Line 2
When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.
/wen ə ˈwaɪər ɔːr ə ˈnʌmbər ʌv ðem ɑːr brɔːt nɪr ə mæɡˈnetɪk ˈniːdəl ɔːr ə smɔːl ˈkʌmpəs ðə ˈniːdəl wɪl biː dɪˈflektɪd frʌm ɪts nɔːrθ ənd saʊθ laɪn ənd wɪl pɔɪnt iːst ənd west ɔːr west ənd iːst əˈkɔːrdɪŋ tuː ðə dərˈekʃən ɪn wɪtʃ ðə ˈkɜːrənt ɪz ˈpæsɪŋ θruː ðə ˈwaɪərz/
Line 3
All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.
/ɔːl ˈwaɪərz ðæt ɑːr kənˈdʌktɪŋ ɪˌlekˈtrɪsəti hæv ə mæɡˈnetɪk fiːld ənd wen brɔːt nɪr ðə ˈmæɡnɪtaɪzd ˈniːdəl ʌv ə ˈkʌmpəs ðeɪ hæv ðə ˈpaʊər tuː ækt ɑːn ɪt ðə seɪm æz əˈnʌðər ənd ˈstrɔːŋər ˈmæɡnət wʊd/
Line 4
The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.
Line 5
This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

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.

conducting noun US /kənˈdʌktɪŋ/

the way of administering a business

From this reading “All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.”

deflected verb US /dɪˈflektɪd/

past form of “deflect” — prevent the occurrence of; prevent from happening

From this reading “When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.”

detectors noun US /dɪˈtektərz/

plural of “detector” — any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner

From this reading “CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.”

magnet noun US /ˈmæɡnət/

(physics) a device that attracts iron and produces a magnetic field

From this reading “All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.”

magnetic adjective US /mæɡˈnetɪk/

of or relating to or caused by magnetism

From this reading “When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.”

magnetized adjective US /ˈmæɡnɪtaɪzd/

having the properties of a magnet; i.e. of attracting iron or steel

From this reading “All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.”

secondly adverb US /ˈsekəndli/

in the second place

From this reading “The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.”

technically adverb US /ˈteknɪkəli/

with regard to technique

From this reading “CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.”

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.

magnetic field adjective + noun

the lines of force surrounding a permanent magnet or a moving charged particle

In this reading “All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.”

depends upon verb + particle counted as “depend upon”

be contingent on

In this reading “The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.”

small compass adjective + noun

In this reading “When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.”

resting on verb + particle counted as “rest on”

rest on for support

In this reading “This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.”

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.

1

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

From this reading This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

AdeterminerUS /ə/

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

aboveprepositionUS /əˈbʌv/

higher than, or over, something

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

accordingadjectiveUS /əˈkɔːrdɪŋ/

(followed by “to”) in agreement with or accordant with

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

actverbUS /ækt/

perform an action, or work out or perform (an action)

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

actionnounUS /ˈækʃən/

something done (usually as opposed to something said)

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

AlladjectiveUS /ɔːl/

(quantifier) used with either mass or count nouns to indicate the whole number or amount of or every one of a class

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

amateurnounUS /ˈæmətɜːr/

someone who pursues a study or sport as a pastime

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

ANDconjunctionUS /ənd/

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

anotherdeterminerUS /əˈnʌðər/

one more of the same kind, or a different one

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

apparatusnounUS /ˌæpərˈætəs/

equipment designed to serve a specific function

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

areauxiliary verbUS /ɑːr/

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

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

asconjunctionUS /æz/

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

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

balancedadjectiveUS /ˈbælənst/

being in a state of proper equilibrium

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

batterynounUS /ˈbætəri/

group of guns or missile launchers operated together at one place

From this reading This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

beauxiliary verbUS /biː/

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

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

belowprepositionUS /bɪˈloʊ/

at or to a lower level than something

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

bothdeterminerUS /boʊθ/

the two together, not just one

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

broughtverbUS /brɔːt/

inflected form of “bring” — take something or somebody with oneself somewhere

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

calledverbUS /kɔːld/

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

clearlyadverbUS /ˈklɪrli/

without doubt or question

From this reading This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

compassnounUS /ˈkʌmpəs/

navigational instrument for finding directions

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

conductingnounUS /kənˈdʌktɪŋ/

the way of administering a business

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

connectedadjectiveUS /kəˈnektɪd/

being joined in close association

From this reading This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

currentnounUS /ˈkɜːrənt/

a flow of electricity through a conductor

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

current-detector

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

CURRENT-DETECTORS

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

deflectedverbUS /dɪˈflektɪd/

past form of “deflect” — prevent the occurrence of; prevent from happening

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

dependsverbUS /dɪˈpendz/

third-person singular of “depend” — be contingent upon (something that is elided)

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

detectorsnounUS /dɪˈtektərz/

plural of “detector” — any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

directionnounUS /dərˈekʃən/

a line leading to a place or point

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

eastnounUS /iːst/

the cardinal compass point that is at 90 degrees

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

electrician's

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

electricitynounUS /ɪˌlekˈtrɪsəti/

a physical phenomenon associated with stationary or moving electrons and protons

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

equipmentnounUS /ɪˈkwɪpmənt/

an instrumentality needed for an undertaking or to perform a service

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

fieldnounUS /fiːld/

a piece of land cleared of trees and usually enclosed

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

FignounUS /fɪɡ/

a diagram or picture illustrating textual material

From this reading This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

firstadjectiveUS /fɜːrst/

preceding all others in time or space or degree

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

fromprepositionUS /frʌm/

showing where something starts, or who sent it

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

GALVANOMETERS

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

galvanoscope

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

haveauxiliary verbUS /hæv/

used with a past participle to form the perfect tenses

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

heldadjectiveUS /held/

occupied or in the control of; often used in combination

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

inprepositionUS /ɪn/

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

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

isauxiliary verbUS /ɪz/

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

itpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

itsdeterminerUS /ɪts/

belonging to the thing or animal already mentioned

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

linenounUS /laɪn/

a formation of people or things one beside another

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

magnetnounUS /ˈmæɡnət/

(physics) a device that attracts iron and produces a magnetic field

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

magneticadjectiveUS /mæɡˈnetɪk/

of or relating to or caused by magnetism

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

magnetizedadjectiveUS /ˈmæɡnɪtaɪzd/

having the properties of a magnet; i.e. of attracting iron or steel

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

moreadjectiveUS /mɔːr/

(comparative of “much” used with mass nouns) a quantifier meaning greater in size or amount or extent or degree

From this reading This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

nearadverbUS /nɪr/

near in time or place or relationship

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

necessaryadjectiveUS /ˈnesəseri/

absolutely essential

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

needlenounUS /ˈniːdəl/

the leaf of a conifer

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

northnounUS /nɔːrθ/

the region of the United States lying to the north of the Mason-Dixon line

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

numbernounUS /ˈnʌmbər/

the property possessed by a sum or total or indefinite quantity of units or individuals

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

onprepositionUS /ɑːn/

touching and supported by a surface

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

orconjunctionUS /ɔːr/

used to join alternatives or possibilities

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

partnounUS /pɑːrt/

something determined in relation to something that includes it

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

passingnounUS /ˈpæsɪŋ/

(American football) a play that involves one player throwing the ball to a teammate

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

piecenounUS /piːs/

a separate part of a whole

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

pointnounUS /pɔɪnt/

a geometric element that has position but no extension

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

powernounUS /ˈpaʊər/

possession of controlling influence

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

properlyadverbUS /ˈprɑːpərli/

in the right manner; correctly; suitably

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

restingverbUS /ˈrestɪŋ/

-ing form of “rest” — not move; be in a resting position

From this reading This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

sameadjectiveUS /seɪm/

Identical; not different.

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

secondlyadverbUS /ˈsekəndli/

in the second place

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

shownverbUS /ʃoʊn/

inflected form of “show” — give an exhibition of to an interested audience

From this reading This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

smalladjectiveUS /smɔːl/

limited or below average in number or quantity or magnitude or extent

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

southnounUS /saʊθ/

the region of the United States lying to the south of the Mason-Dixon line

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

strongeradjectiveUS /ˈstrɔːŋər/

comparative of “strong” — having strength or power greater than average or expected

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

technicallyadverbUS /ˈteknɪkəli/

with regard to technique

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

thatconjunctionUS /ðæt/

used to introduce what somebody said, thought, or felt

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

thedeterminerUS /ðə/

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

thempronounUS /ðem/

the people or things already mentioned, as the object

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

theypronounUS /ðeɪ/

the people, animals, or things already mentioned, as the subject

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

thingsnounUS /θɪŋz/

any movable possession (especially articles of clothing)

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

thisdeterminerUS /ðɪs/

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

From this reading CURRENT-DETECTORS AND GALVANOMETERS A current-detector is a necessary part of the amateur electrician’s equipment; technically, this piece of apparatus is called a galvanoscope.

throughprepositionUS /θruː/

from one end or side of something to the other

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

toparticleUS /tuː/

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

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

twonounUS /tuː/

the cardinal number that is the sum of one and one or a numeral representing this number

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

uponprepositionUS /əˈpɑːn/

a formal word for “on”

From this reading The action of detectors depends upon two things--first, the magnetized needle that, when properly balanced, will point north and south; and, secondly, a current of electricity passing through a wire or wires held above the needle, or both above and below it.

westnounUS /west/

the countries of (originally) Europe and (now including) North America and South America

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

WhenconjunctionUS /wen/

at the time that

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

whereconjunctionUS /wer/

in or at the place that

From this reading This is more clearly shown in Fig. 1, where a compass is resting on a wire connected to a battery.

whichpronounUS /wɪtʃ/

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

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

willmodal verbUS /wɪl/

used to talk about the future, or about willingness

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

wirenounUS /ˈwaɪər/

ligament made of metal and used to fasten things or make cages or fences etc

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

wiresnounUS /ˈwaɪərz/

plural of “wire” — ligament made of metal and used to fasten things or make cages or fences etc

From this reading When a wire or a number of them are brought near a magnetic needle or a small compass, the needle will be deflected from its north and south line and will point east and west, or west and east, according to the direction in which the current is passing through the wires.

wouldmodal verbUS /wʊd/

used for something imagined, polite, or habitual in the past

From this reading All wires that are conducting electricity have a magnetic field, and when brought near the magnetized needle of a compass they have the power to act on it the same as another and stronger magnet would.

Chapter 7 of Harper's Electricity Book for Boys by Joseph H. (Joseph Henry) Adams holds 189 sentences, grouped into 38 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 7 of Harper's Electricity Book for Boys contain?

Chapter 7 holds 189 sentences of Harper's Electricity Book for Boys, unabridged, divided into 38 reading sections.

This page carries chapter 7 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 189 sentences, grouped into 38 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 7 of Harper's Electricity Book for Boys?

Work through the 38 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 38 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 7 be read aloud to me?

Yes — every sentence and every individual word in chapter 7 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.