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Great Inventions and Discoveries
Great Inventions and Discoveries

Chapter IV

Chapter 4 of Great Inventions and Discoveries is here in full — 249 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
ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.
If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.
Steam is a giant; electricity is a witch.
There is something uncanny about it.
Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.
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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.

Great Inventions and Discoveries

Chapter IV

Chapter 4 of Great Inventions and Discoveries is here in full — 249 sentences across 50 reading sections, with audio for every sentence and word.

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

Line 1
ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.
/ɪˌlekˈtrɪsəti ðə ˈteləɡræf ənd ðə ˈteləfoʊn ðə ɡreɪt ˈmɪrəkəl ʌv ðə ˈtwentiəθ ˈsentʃəri ɪz ɪˌlekˈtrɪsəti/
Line 2
If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.
/ɪf ðə ˈprɪntɪŋ pres ɪz ðə breɪn ʌv ˌsɪvəlɪˈzeɪʃən ənd ðə stiːm ˈendʒən ɪz ɪts hɑːrt ɪˈlektrɪk ˈwaɪərz ɑːr ɪts ˈnɜːrvəs ˈsɪstəm/
Line 3
Steam is a giant; electricity is a witch.
/stiːm ɪz ə ˈdʒaɪənt ɪˌlekˈtrɪsəti ɪz ə wɪtʃ/
Line 4
There is something uncanny about it.
/ðer ɪz ˈsʌmθɪŋ ənˈkæni əˈbaʊt ɪt/
Line 5
Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

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.

compels verb US /kəmˈpelz/

third-person singular of “compel” — force somebody to do something

From this reading “Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.”

cures noun US /kjʊrz/

plural of “cure” — a medicine or therapy that cures disease or relieve pain

From this reading “Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.”

kills noun US /kɪlz/

plural of “kill” — the act of terminating a life

From this reading “Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.”

ohms noun US /oʊmz/

plural of “ohm” — a unit of electrical resistance equal to the resistance between two points on a conductor when a potential difference of one volt between them produces a current of one ampere

From this reading “Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.”

twentieth noun US /ˈtwentiəθ/

position 20 in a countable series of things

From this reading “ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.”

uncanny adjective US /ənˈkæni/

suggesting the operation of supernatural influences

From this reading “There is something uncanny about it.”

universities noun US /ˌjuːnəˈvɜːrsətiz/

plural of “university” — the body of faculty and students at a university

From this reading “Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.”

volts noun US /voʊlts/

plural of “volt” — a unit of potential equal to the potential difference between two points on a conductor carrying a current of 1 ampere when the power dissipated between the two points is 1 watt

From this reading “Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.”

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.

twentieth century noun + noun

the century from 1901 to 2000

In this reading “ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.”

steam engine verb + noun

external-combustion engine in which heat is used to raise steam which either turns a turbine or forces a piston to move up and down in a cylinder

In this reading “If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.”

nervous system adjective + noun

the sensory and control apparatus consisting of a network of nerve cells

In this reading “If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.”

electric wires adjective + noun counted as “electric wire”

In this reading “If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.”

through space preposition + noun

In this reading “Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.”

All words in this reading · 79

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 Steam is a giant; electricity is a witch.

aboutprepositionUS /əˈbaʊt/

on the subject of; concerning

From this reading There is something uncanny about it.

ANDconjunctionUS /ənd/

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

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

areauxiliary verbUS /ɑːr/

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

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

aroundprepositionUS /ərˈaʊnd/

surrounding, or on every side of, something

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

bearverbUS /ber/

have

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

brainnounUS /breɪn/

that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

callsnounUS /kɔːlz/

plural of “call” — a telephone connection

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

canmodal verbUS /kæn/

to be able to, or to be allowed to

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

centurynounUS /ˈsentʃəri/

a period of 100 years

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

civilizationnounUS /ˌsɪvəlɪˈzeɪʃən/

a society in an advanced state of social development (e.g., with complex legal and political and religious organizations)

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

compelsverbUS /kəmˈpelz/

third-person singular of “compel” — force somebody to do something

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

coursesnounUS /ˈkɔːrsəz/

plural of “course” — education imparted in a series of lessons or meetings

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

criminalsnounUS /ˈkrɪmənəlz/

plural of “criminal” — someone who has committed a crime or has been legally convicted of a crime

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

curesnounUS /kjʊrz/

plural of “cure” — a medicine or therapy that cures disease or relieve pain

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

darknessnounUS /ˈdɑːrknəs/

absence of light or illumination

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

earthnounUS /ɜːrθ/

the 3rd planet from the sun; the planet we live on

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

electricadjectiveUS /ɪˈlektrɪk/

using or providing or producing or transmitting or operated by electricity

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

ELECTRICITYnounUS /ɪˌlekˈtrɪsəti/

a physical phenomenon associated with stationary or moving electrons and protons

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

enginenounUS /ˈendʒən/

motor that converts thermal energy to mechanical work

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

entireadjectiveUS /ɪnˈtaɪər/

constituting the full quantity or extent; complete

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

explainverbUS /ɪkˈspleɪn/

make plain and comprehensible

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

flyverbUS /flaɪ/

travel through the air; be airborne

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

giantnounUS /ˈdʒaɪənt/

any creature of exceptional size

From this reading Steam is a giant; electricity is a witch.

givesnounUS /ɡɪvz/

plural of “give” — the elasticity of something that can be stretched and returns to its original length

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

greatadjectiveUS /ɡreɪt/

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

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

heartnounUS /hɑːrt/

the locus of feelings and intuitions

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

himpronounUS /hɪm/

the male already mentioned, as the object of a verb or preposition

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

hisdeterminerUS /hɪz/

belonging to a man, boy, or male animal already mentioned

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

hundredsnounUS /ˈhʌndrədz/

plural of “hundred” — ten 10s

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

IfconjunctionUS /ɪf/

on condition that; in the event that

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

inprepositionUS /ɪn/

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

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

isauxiliary verbUS /ɪz/

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

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

itpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading There is something uncanny about it.

itsdeterminerUS /ɪts/

belonging to the thing or animal already mentioned

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

killsnounUS /kɪlz/

plural of “kill” — the act of terminating a life

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

knowsnounUS /noʊz/

plural of “know” — the fact of being aware of information that is known to few people

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

makeverbUS /meɪk/

engage in

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

makesnounUS /meɪks/

plural of “make” — a recognizable kind

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

MannounUS /mæn/

an adult person who is male (as opposed to a woman)

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

measuresnounUS /ˈmeʒərz/

plural of “measure” — any maneuver made as part of progress toward a goal

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

milesnounUS /maɪlz/

plural of “mile” — a unit of length equal to 1,760 yards or 5,280 feet; exactly 1609.344 meters

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

miraclenounUS /ˈmɪrəkəl/

any amazing or wonderful occurrence

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

negativeadjectiveUS /ˈneɡətɪv/

characterized by or displaying negation or denial or opposition or resistance; having no positive features

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

nervousadjectiveUS /ˈnɜːrvəs/

easily agitated

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

nodeterminerUS /noʊ/

not any; not one

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

ohmsnounUS /oʊmz/

plural of “ohm” — a unit of electrical resistance equal to the resistance between two points on a conductor when a potential difference of one volt between them produces a current of one ampere

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

positiveadjectiveUS /ˈpɑːzətɪv/

characterized by or displaying affirmation or acceptance or certainty etc.

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

pressverbUS /pres/

exert pressure or force to or upon

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

printingnounUS /ˈprɪntɪŋ/

text handwritten in the style of printed matter

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

scatters

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

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

schoolsnounUS /skuːlz/

plural of “school” — an educational institution

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

sickadjectiveUS /sɪk/

affected by an impairment of normal physical or mental function

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

somethingpronounUS /ˈsʌmθɪŋ/

a thing, without saying which

From this reading There is something uncanny about it.

spacenounUS /speɪs/

the unlimited expanse in which everything is located

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

steamverbUS /stiːm/

travel by means of steam power

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

systemnounUS /ˈsɪstəm/

instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

TELEGRAPHnounUS /ˈteləɡræf/

apparatus used to communicate at a distance over a wire (usually in Morse code)

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

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 ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

THEdeterminerUS /ðə/

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

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

ThereadverbUS /ðer/

in or at that place or location

From this reading There is something uncanny about it.

throughprepositionUS /θruː/

from one end or side of something to the other

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

toparticleUS /tuː/

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

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

twentiethnounUS /ˈtwentiəθ/

position 20 in a countable series of things

From this reading ELECTRICITY: THE TELEGRAPH AND THE TELEPHONE The great miracle of the twentieth century is electricity.

uncannyadjectiveUS /ənˈkæni/

suggesting the operation of supernatural influences

From this reading There is something uncanny about it.

universitiesnounUS /ˌjuːnəˈvɜːrsətiz/

plural of “university” — the body of faculty and students at a university

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

voltsnounUS /voʊlts/

plural of “volt” — a unit of potential equal to the potential difference between two points on a conductor carrying a current of 1 ampere when the power dissipated between the two points is 1 watt

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

volumesnounUS /ˈvɑːljuːmz/

plural of “volume” — the amount of 3-dimensional space occupied by an object

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

whatpronounUS /wʌt/

used to ask for information about something

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

whirlverbUS /wɜːrl/

turn in a twisting or spinning motion

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

whispernounUS /ˈwɪspər/

speaking softly without vibration of the vocal cords

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

wiresnounUS /ˈwaɪərz/

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

From this reading If the printing press is the brain of civilization and the steam engine is its heart, electric wires are its nervous system.

witchnounUS /wɪtʃ/

a female sorcerer or magician

From this reading Steam is a giant; electricity is a witch.

withprepositionUS /wɪð/

in the company of; together with

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

wordnounUS /wɜːrd/

a unit of language that native speakers can identify

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

writesverbUS /raɪts/

third-person singular of “write” — produce a literary work

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

writtenadjectiveUS /ˈrɪtən/

set down in writing in any of various ways

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

yetconjunctionUS /jet/

but in spite of that

From this reading Man writes volumes about electricity; calls it positive and negative and measures it in ohms and volts; gives courses to explain it in his schools and universities; kills criminals, cures the sick, and scatters darkness with it; makes it whirl him through space; compels it to bear his whisper through hundreds of miles, and can make it fly around the entire earth with his written word--and yet no man knows what electricity is.

Chapter 4 of Great Inventions and Discoveries by Willis Duff Piercy holds 249 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 4 of Great Inventions and Discoveries contain?

Chapter 4 holds 249 sentences of Great Inventions and Discoveries, unabridged, divided into 50 reading sections.

This page carries chapter 4 of Great Inventions and Discoveries by Willis Duff Piercy exactly as it stands in the source edition, without abridgement. It runs to 249 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 4 of Great Inventions and Discoveries?

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 4 be read aloud to me?

Yes — every sentence and every individual word in chapter 4 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 Great Inventions and Discoveries

Common questions about reading Great Inventions and Discoveries by Willis Duff Piercy on this page, its source edition and its audio.

Is this the complete text of Great Inventions and Discoveries?

Yes. All 2167 sentences of Project Gutenberg eBook #37574 are kept, with a record of which sentences cover which part.

Which edition of Great Inventions and Discoveries is used?

Project Gutenberg eBook #37574, unabridged. The Project Gutenberg header, footer and licence are removed.

How long does Great Inventions and Discoveries take to read?

About 180 minutes of reading across 434 sections of 5 sentences each, at an unhurried pace.

How to read Great Inventions and Discoveries section by section

How to work through Great Inventions and Discoveries section by section, using the audio and the tap-to-define vocabulary.

  1. Open a chapter

    Choose one of the 17 chapters of Great Inventions and Discoveries 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 Great Inventions and Discoveries

Words and structures a reader meets early in Great Inventions and Discoveries, each tappable for pronunciation and meaning.

First
A word that appears in the opening chapter of Great Inventions and Discoveries; the reader can tap it to hear it and see its dictionary entry.
Lived
A word that appears in the opening chapter of Great Inventions and Discoveries; the reader can tap it to hear it and see its dictionary entry.
Branches
A word that appears in the opening chapter of Great Inventions and Discoveries; the reader can tap it to hear it and see its dictionary entry.
Trees
A word that appears in the opening chapter of Great Inventions and Discoveries; the reader can tap it to hear it and see its dictionary entry.