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The Boy's Playbook of Science
The Boy's Playbook of Science

Chapter XXI

Chapter 21 of The Boy's Playbook of Science is here in full — 147 sentences across 30 reading sections, with audio for every sentence and word.

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DIA-MAGNETISM.
At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.
This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.
The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."
Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.
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LEARNER DICTIONARY
Archivist
/ˈɑːrkɪvɪst/
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A keeper or guardian of historical records and memories.

The Boy's Playbook of Science

Chapter XXI

Chapter 21 of The Boy's Playbook of Science is here in full — 147 sentences across 30 reading sections, with audio for every sentence and word.

Reading 1/29 · 5 reading units · Lines 1–5

Line 1
DIA-MAGNETISM.
Line 2
At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.
Line 3
This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.
Line 4
The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."
Line 5
Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.
/naʊ ðə laɪn ʌv mæɡˈnetɪk fɔːrs miːnz ðæt kənˈtɪnjuːəl floʊ ʌv ðə mæɡˈnetɪk ˈkɜːrənt wɪtʃ ˈpæsəz frʌm poʊl tuː poʊl ənd ɪz ˈɪndəkeɪtəd baɪ ˈaɪərn ˈfaɪlɪŋz ˈsprɪŋkəld ɑːn ˈpeɪpər pleɪst əˈbʌv ðə poʊlz ʌv ə ˈmæɡnət ənd ˈjuːʒəwəli tɜːrmd mæɡˈnetɪk kɜːrvz ɔːr ðə kɜːrvd laɪnz ʌv mæɡˈnetɪk fɔːrs/

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.

Faraday noun US /ˈfærədeɪ/

the English physicist and chemist who discovered electromagnetic induction (1791-1867)

From this reading “At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.”

Faraday's noun US /ˈfærədeɪz/

possessive form of “faraday” — the English physicist and chemist who discovered electromagnetic induction (1791-1867)

filings noun US /ˈfaɪlɪŋz/

plural of “filing” — the entering of a legal document into the public record

From this reading “Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.”

inductive adjective US /ˌɪnˈdʌktɪv/

arising from inductance

From this reading “At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.”

magnets noun US /ˈmæɡnəts/

plural of “magnet” — (physics) a device that attracts iron and produces a magnetic field

From this reading “This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.”

polarized verb US /ˈpoʊləraɪzd/

past form of “polarize” — cause to vibrate in a definite pattern

From this reading “At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.”

rotation noun US /roʊˈteɪʃən/

the act of rotating as if on an axis

From this reading “The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."”

traversing verb US /trəˈvɜːrsɪŋ/

-ing form of “traverse” — travel across or pass over

From this reading “The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."”

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.

curved lines adjective + noun counted as “curved line”

In this reading “Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.”

pass through verb + particle

make a passage or journey from one place to another

In this reading “The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."”

carried out verb + adjective counted as “carry out”

put in effect

In this reading “At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.”

At the end preposition + article + noun counted as “at … end”

In this reading “At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.”

indicated by verb + particle counted as “indicate by”

In this reading “Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.”

All words in this reading · 121

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.

1845

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

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

27th

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

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

adeterminerUS /ə/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

aboveprepositionUS /əˈbʌv/

higher than, or over, something

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

actionnounUS /ˈækʃən/

something done (usually as opposed to something said)

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

afterprepositionUS /ˈæftər/

later than; following

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

alsoadverbUS /ˈɔːlsoʊ/

in addition

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

andeterminerUS /æn/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

andconjunctionUS /ənd/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

AtprepositionUS /æt/

in or near a particular place or position

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

barnounUS /bɑːr/

a room or establishment where alcoholic drinks are served over a counter

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

beauxiliary verbUS /biː/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

beingauxiliary verbUS /ˈbiːɪŋ/

the -ing form of “be”

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

bodiesnounUS /ˈbɑːdiz/

plural of “body” — the entire physical structure of an organism (an animal, plant, or human being)

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

bodynounUS /ˈbɑːdi/

the entire physical structure of an organism (an animal, plant, or human being)

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

boratenoun

a salt or ester of boric acid

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

butconjunctionUS /bʌt/

used to introduce something that contrasts with what came before

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

byprepositionUS /baɪ/

showing who or what does the action

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

calledverbUS /kɔːld/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

carriedverbUS /ˈkærid/

inflected form of “carry” — move while supporting, either in a vehicle or in one's hands or on one's body

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

certainadjectiveUS /ˈsɜːrtən/

definite but not specified or identified

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

changingadjectiveUS /ˈtʃeɪndʒɪŋ/

marked by continuous change or effective action

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

chapternounUS /ˈtʃæptər/

a subdivision of a written work; usually numbered and titled

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

communicatedverbUS /kəˈmjuːnəkeɪtɪd/

past form of “communicate” — transmit information

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

confinedadjectiveUS /kənˈfaɪnd/

not invading healthy tissue

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

continualadjectiveUS /kənˈtɪnjuːəl/

recurring regularly or frequently in a prolonged and closely spaced series

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

currentnounUS /ˈkɜːrənt/

a flow of electricity through a conductor

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

curvedadjectiveUS /kɜːrvd/

having or marked by a curve or smoothly rounded bend

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

curvesnounUS /kɜːrvz/

plural of “curve” — the trace of a point whose direction of motion changes

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

degreenounUS /dɪˈɡriː/

a position on a scale of intensity or amount or quality

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

devisedverbUS /dɪˈvaɪzd/

past form of “devise” — come up with (an idea, plan, explanation, theory, or principle) after a mental effort

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

devotedadjectiveUS /dɪˈvoʊtɪd/

zealous in devotion or affection

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

DIA-MAGNETISM

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

From this reading DIA-MAGNETISM.

diminishedadjectiveUS /dɪˈmɪnɪʃt/

impaired by diminution

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

directionnounUS /dərˈekʃən/

a line leading to a place or point

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

Dr

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

effectnounUS /ɪˈfekt/

a phenomenon that follows and is caused by some previous phenomenon

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

electro-magnet

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

endnounUS /end/

either extremity of something that has length

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

enunciationnoun

the articulation of speech regarded from the point of view of its intelligibility to the audience

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

experiencesnounUS /ɪkˈspɪriənsɪz/

plural of “experience” — the accumulation of knowledge or skill that results from direct participation in events or activities

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

experimentnounUS /ɪkˈsperəmənt/

the act of conducting a controlled test or investigation

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

factnounUS /fækt/

a piece of information about circumstances that exist or events that have occurred

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

FaradaynounUS /ˈfærədeɪ/

the English physicist and chemist who discovered electromagnetic induction (1791-1867)

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

Faraday'snounUS /ˈfærədeɪz/

possessive form of “faraday” — the English physicist and chemist who discovered electromagnetic induction (1791-1867)

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

filingsnounUS /ˈfaɪlɪŋz/

plural of “filing” — the entering of a legal document into the public record

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

flownounUS /floʊ/

the motion characteristic of fluids (liquids or gases)

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

forcenounUS /fɔːrs/

a powerful effect or influence

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

foundverbUS /faʊnd/

set up or found

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

fromprepositionUS /frʌm/

showing where something starts, or who sent it

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

glassnounUS /ɡlæs/

a brittle transparent solid with irregular atomic structure

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

hasauxiliary verbUS /hæz/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

heavyadjectiveUS /ˈhevi/

of comparatively great physical weight or density

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

ifconjunctionUS /ɪf/

on condition that; in the event that

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

importantadjectiveUS /ˌɪmˈpɔːrtənt/

of great significance or value

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

inprepositionUS /ɪn/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

indicatedverbUS /ˈɪndəkeɪtəd/

past form of “indicate” — be a signal for or a symptom of

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

inductiveadjectiveUS /ˌɪnˈdʌktɪv/

arising from inductance

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

inventornounUS /ˌɪnˈventər/

someone who is the first to think of or make something

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

ironnounUS /ˈaɪərn/

a heavy ductile magnetic metallic element; is silver-white in pure form but readily rusts; used in construction and tools and armament; plays a role in the transport of oxygen by the blood

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

isauxiliary verbUS /ɪz/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

itpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

leadverbUS /led/

take somebody somewhere

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

learnedadjectiveUS /lɜːrnd/

having or showing profound knowledge

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

lightadjectiveUS /laɪt/

of comparatively little physical weight or density

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

linenounUS /laɪn/

a formation of people or things one beside another

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

linesnounUS /laɪnz/

plural of “line” — a formation of people or things one beside another

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

madeadjectiveUS /meɪd/

produced by a manufacturing process

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

magnetnounUS /ˈmæɡnət/

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

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

magneticadjectiveUS /mæɡˈnetɪk/

of or relating to or caused by magnetism

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

magnetsnounUS /ˈmæɡnəts/

plural of “magnet” — (physics) a device that attracts iron and produces a magnetic field

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

meansnounUS /miːnz/

thing or person that acts to produce a particular effect or achieve an end

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

notadverbUS /nɑːt/

used to make a word, phrase, or sentence negative

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

NovembernounUS /noʊˈvembər/

the month following October and preceding December

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

NowadverbUS /naʊ/

in the historical present; at this point in the narration of a series of past events

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

ofprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

onprepositionUS /ɑːn/

touching and supported by a surface

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

orconjunctionUS /ɔːr/

used to join alternatives or possibilities

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

ordinarynounUS /ˈɔːrdəneri/

a judge of a probate court

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

outadjectiveUS /aʊt/

not allowed to continue to bat or run

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

papernounUS /ˈpeɪpər/

a material made of cellulose pulp derived mainly from wood or rags or certain grasses

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

parallelnounUS /ˈperəlel/

something having the property of being analogous to something else

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

passverbUS /pæs/

go across or through

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

passesnounUS /ˈpæsəz/

plural of “pass” — (baseball) an advance to first base by a batter who receives four balls

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

peculiaradjectiveUS /pəˈkjuːljər/

beyond or deviating from the usual or expected

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

perceptibleadjectiveUS /pərˈseptəbəl/

capable of being perceived by the mind or senses

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

philosophernounUS /fəˈlɑːsəfər/

a specialist in philosophy

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

placedadjectiveUS /pleɪst/

situated in a particular spot or position

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

polarizedverbUS /ˈpoʊləraɪzd/

past form of “polarize” — cause to vibrate in a definite pattern

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

polenounUS /poʊl/

a long (usually round) rod of wood or metal or plastic

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

polesnounUS /poʊlz/

plural of “pole” — a long (usually round) rod of wood or metal or plastic

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

powernounUS /ˈpaʊər/

possession of controlling influence

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

powerfuladjectiveUS /ˈpaʊərfəl/

having great power or force or potency or effect

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

raynounUS /reɪ/

a column of light (as from a beacon)

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

resultnounUS /rɪˈzʌlt/

a phenomenon that follows and is caused by some previous phenomenon

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

rotationnounUS /roʊˈteɪʃən/

the act of rotating as if on an axis

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

RoyaladjectiveUS /ˈrɔɪəl/

of or relating to or indicative of or issued or performed by a king or queen or other monarch

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

sameadjectiveUS /seɪm/

Identical; not different.

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

shownverbUS /ʃoʊn/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

silicated

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

SocietynounUS /səˈsaɪəti/

an extended social group having a distinctive cultural and economic organization

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

sprinkledverbUS /ˈsprɪŋkəld/

past form of “sprinkle” — distribute loosely

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

subjectnounUS /səbˈdʒekt/

the subject matter of a conversation or discussion

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

subjectedverbUS /səbˈdʒektɪd/

past form of “subject” — cause to experience or suffer or make liable or vulnerable to

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

termedverbUS /tɜːrmd/

past form of “term” — name formally or designate with a term

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

thatconjunctionUS /ðæt/

used to introduce what somebody said, thought, or felt

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

thedeterminerUS /ðə/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

ThisdeterminerUS /ðɪs/

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

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

thoughconjunctionUS /ðoʊ/

in spite of the fact that

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

throughprepositionUS /θruː/

from one end or side of something to the other

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

toparticleUS /tuː/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

transmittedadjectiveUS /trænˈsmɪtɪd/

occurring among members of a family usually by heredity

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

transparentadjectiveUS /trænˈsperənt/

transmitting light; able to be seen through with clarity

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

traversingverbUS /trəˈvɜːrsɪŋ/

-ing form of “traverse” — travel across or pass over

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

usuallyadverbUS /ˈjuːʒəwəli/

under normal conditions

From this reading Now, "_the line of magnetic force_" means that continual flow of the magnetic current which passes from pole to pole, and is indicated by iron filings sprinkled on paper placed above the poles of a magnet, and usually termed _magnetic curves_, or the curved lines of magnetic force.

veryadjectiveUS /ˈveri/

precisely as stated

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

wasauxiliary verbUS /wɑːz/

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

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

whenconjunctionUS /wen/

at the time that

From this reading The result of this important experiment was communicated to the Royal Society by Dr. Faraday on the 27th November, 1845, the enunciation of the fact by this learned philosopher being, "that when '_the line of magnetic force_' is made to pass through certain transparent bodies parallel to a ray of polarized light traversing the same body, the ray of polarized light experiences a rotation."

whichpronounUS /wɪtʃ/

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

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

willmodal verbUS /wɪl/

used to talk about the future, or about willingness

From this reading At the end of the chapter devoted to the subject of light, will be found an experiment devised and carried out by Dr. Faraday, in which it is shown that if a bar of a peculiar glass (called after the inventor, _Faraday's heavy glass_, or silicated borate of lead) is subjected to the inductive action of a very powerful electro-magnet, that it has the power of changing the direction of a ray of polarized light transmitted through it.

withprepositionUS /wɪð/

in the company of; together with

From this reading This effect is not confined to the poles of an electro-magnet, but is also perceptible (though in a diminished degree) with ordinary magnets.

Chapter 21 of The Boy's Playbook of Science by John Henry Pepper holds 147 sentences, grouped into 30 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 21 of The Boy's Playbook of Science contain?

Chapter 21 holds 147 sentences of The Boy's Playbook of Science, unabridged, divided into 30 reading sections.

This page carries chapter 21 of The Boy's Playbook of Science by John Henry Pepper exactly as it stands in the source edition, without abridgement. It runs to 147 sentences, grouped into 30 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 21 of The Boy's Playbook of Science?

Work through the 30 sections in order, replaying any sentence and tapping unfamiliar words for their entries.

Each of the 30 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 21 be read aloud to me?

Yes — every sentence and every individual word in chapter 21 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 The Boy's Playbook of Science

Common questions about reading The Boy's Playbook of Science by John Henry Pepper on this page, its source edition and its audio.

Is this the complete text of The Boy's Playbook of Science?

Yes. All 4206 sentences of Project Gutenberg eBook #41839 are kept, with a record of which sentences cover which part.

Which edition of The Boy's Playbook of Science is used?

Project Gutenberg eBook #41839, unabridged. The Project Gutenberg header, footer and licence are removed.

How long does The Boy's Playbook of Science take to read?

About 350 minutes of reading across 842 sections of 5 sentences each, at an unhurried pace.

How to read The Boy's Playbook of Science section by section

How to work through The Boy's Playbook of Science section by section, using the audio and the tap-to-define vocabulary.

  1. Open a chapter

    Choose one of the 31 chapters of The Boy's Playbook of Science 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 The Boy's Playbook of Science

Words and structures a reader meets early in The Boy's Playbook of Science, each tappable for pronunciation and meaning.

Chemical
A word that appears in the opening chapter of The Boy's Playbook of Science; the reader can tap it to hear it and see its dictionary entry.
Philosophical
A word that appears in the opening chapter of The Boy's Playbook of Science; the reader can tap it to hear it and see its dictionary entry.
Apparatus
A word that appears in the opening chapter of The Boy's Playbook of Science; the reader can tap it to hear it and see its dictionary entry.
Required
A word that appears in the opening chapter of The Boy's Playbook of Science; the reader can tap it to hear it and see its dictionary entry.