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

Chapter XXVII

Chapter 27 of The Boy's Playbook of Science is here in full — 150 sentences across 30 reading sections, with audio for every sentence and word.

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Context Illustration Reading 1/30 · 5 lines
English subtitles · tap any word to listen 1 / 5
THE POLARIZATION OF LIGHT.
This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.
We have first to ask, "What is polarized light?"
The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.
After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.
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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.

The Boy's Playbook of Science

Chapter XXVII

Chapter 27 of The Boy's Playbook of Science is here in full — 150 sentences across 30 reading sections, with audio for every sentence and word.

Reading 1/30 · 5 reading units · Lines 1–5

Line 1
THE POLARIZATION OF LIGHT.
/ðə ˌpoʊlərəˈzeɪʃən ʌv laɪt/
Line 2
This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.
Line 3
We have first to ask, "What is polarized light?"
/wiː hæv fɜːrst tuː æsk wʌt ɪz ˈpoʊləraɪzd laɪt/
Line 4
The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.
Line 5
After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

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.

diffraction noun US /dɪˈfrækʃən/

when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands

From this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

elementary adjective US /ˌeləˈmentri/

easy and not involved or complicated

From this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

includes verb US /ˌɪnˈkluːdz/

third-person singular of “include” — have as a part, be made up out of

From this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

perusing noun US /pərˈuːzɪŋ/

reading carefully with intent to remember

From this reading “After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.”

philosophically adverb US /ˌfɪləˈsɑːfɪkəli/

in a philosophic manner

From this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

polarization noun US /ˌpoʊlərəˈzeɪʃən/

the phenomenon in which waves of light or other radiation are restricted in direction of vibration

From this reading “THE POLARIZATION OF LIGHT.”

polarized verb US /ˈpoʊləraɪzd/

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

From this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

rationale noun US /ˌræʃəˈnæl/

(law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature)

From this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

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.

previous chapter adjective + noun

In this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

most remarkable adverb + adjective

In this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

same time adjective + noun

In this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

most difficult adverb + adjective

In this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

youthful minds adjective + noun counted as “youthful mind”

In this reading “This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.”

All words in this reading · 94

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.

262

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

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

330

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

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

adeterminerUS /ə/

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

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

accordingadjectiveUS /əˈkɔːrdɪŋ/

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

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

AfterprepositionUS /ˈæftər/

later than; following

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

againadverbUS /əˈɡen/

anew

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

alreadyadverbUS /ɔːlˈredi/

prior to a specified or implied time

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

andeterminerUS /æn/

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

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

andconjunctionUS /ənd/

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

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

answerverbUS /ˈænsər/

react verbally

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

appreciatedadjectiveUS /əˈpriːʃieɪtɪd/

fully understood or grasped

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

askverbUS /æsk/

make a request or demand for something to somebody

From this reading We have first to ask, "What is polarized light?"

atprepositionUS /æt/

in or near a particular place or position

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

backadverbUS /bæk/

in or to or toward a former location

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

beauxiliary verbUS /biː/

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

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

beforeprepositionUS /bɪˈfɔːr/

earlier than; in front of

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

branchnounUS /bræntʃ/

a division of some larger or more complex organization

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

carefullyadverbUS /ˈkerfəli/

taking care or paying attention

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

carryverbUS /ˈkæri/

move while supporting, either in a vehicle or in one's hands or on one's body

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

certainlyadverbUS /ˈsɜːrtənli/

definitely or positively (“sure” is sometimes used informally for “surely”)

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

chapternounUS /ˈtʃæptər/

a subdivision of a written work; usually numbered and titled

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

chromaticadjective

able to refract light without spectral color separation

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

circumstancesnounUS /ˈsɜːrkəmstænsəz/

your overall circumstances or condition in life (including everything that happens to you)

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

considerationnounUS /kənˌsɪdərˈeɪʃən/

the process of giving careful thought to something

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

consideredadjectiveUS /kənˈsɪdərd/

carefully weighed

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

constitutedadjectiveUS /ˈkɑːnstətuːtəd/

brought about or set up or accepted; especially long established

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

difficultadjectiveUS /ˈdɪfəkəlt/

not easy; requiring great physical or mental effort to accomplish or comprehend or endure

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

diffractionnounUS /dɪˈfrækʃən/

when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

effectsnounUS /ɪˈfekts/

property of a personal character that is portable but not used in business

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

eitherdeterminerUS /ˈiːðər/

one or the other of two

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

elementaryadjectiveUS /ˌeləˈmentri/

easy and not involved or complicated

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

examinedverbUS /ɪɡˈzæmənd/

past form of “examine” — consider in detail and subject to an analysis in order to discover essential features or meaning

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

explainedverbUS /ɪkˈspleɪnd/

past form of “explain” — make plain and comprehensible

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

firstadjectiveUS /fɜːrst/

preceding all others in time or space or degree

From this reading We have first to ask, "What is polarized light?"

gorgeousadjectiveUS /ˈɡɔːrdʒəs/

dazzlingly beautiful

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

hardlyadverbUS /ˈhɑːrdli/

only a very short time before

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

haveauxiliary verbUS /hæv/

used with a past participle to form the perfect tenses

From this reading We have first to ask, "What is polarized light?"

horizontaladjectiveUS /ˌhɔːrəˈzɑːntəl/

parallel to or in the plane of the horizon or a base line

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

illustratedverbUS /ˈɪləstreɪtəd/

past form of “illustrate” — clarify by giving an example of

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

illustrationsnounUS /ˌɪləˈstreɪʃənz/

plural of “illustration” — artwork that helps make something clear or attractive

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

inprepositionUS /ɪn/

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

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

includesverbUS /ˌɪnˈkluːdz/

third-person singular of “include” — have as a part, be made up out of

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

isauxiliary verbUS /ɪz/

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

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

itpronounUS /ɪt/

a thing, animal, or idea already mentioned

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

juvenileadjectiveUS /ˈdʒuːvənəl/

of or relating to or characteristic of or appropriate for children or young people

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

LIGHTadjectiveUS /laɪt/

of comparatively little physical weight or density

From this reading THE POLARIZATION OF LIGHT.

mannernounUS /ˈmænər/

how something is done or how it happens

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

mightmodal verbUS /maɪt/

used to say something is possible but not certain

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

mindsnounUS /maɪndz/

plural of “mind” — that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

mostadverbUS /moʊst/

used to form the superlative

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

motionnounUS /ˈmoʊʃən/

the use of movements (especially of the hands) to communicate familiar or prearranged signals

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

OFprepositionUS /ʌv/

belonging to, or connected with, somebody or something

From this reading THE POLARIZATION OF LIGHT.

onprepositionUS /ɑːn/

touching and supported by a surface

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

onepronounUS /wʌn/

used to mean any person in general, including the speaker

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

onlyadverbUS /ˈoʊnli/

and nothing more

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

orconjunctionUS /ɔːr/

used to join alternatives or possibilities

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

ourdeterminerUS /ˈaʊər/

belonging to the speaker and others

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

pagesnounUS /ˈpeɪdʒəz/

plural of “page” — one side of one leaf (of a book or magazine or newspaper or letter etc.) or the written or pictorial matter it contains

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

partlyadverbUS /ˈpɑːrtli/

to some extent; in some degree; not wholly

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

perpendicularnounUS /ˌpɜːrpənˈdɪkjələr/

a straight line at right angles to another line

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

perusingnounUS /pərˈuːzɪŋ/

reading carefully with intent to remember

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

phenomenanounUS /fəˈnɑːmənə/

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

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

philosophersnounUS /fəˈlɑːsəfərz/

plural of “philosopher” — a specialist in philosophy

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

philosophicallyadverbUS /ˌfɪləˈsɑːfɪkəli/

in a philosophic manner

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

placenounUS /pleɪs/

a point located with respect to surface features of some region

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

POLARIZATIONnounUS /ˌpoʊlərəˈzeɪʃən/

the phenomenon in which waves of light or other radiation are restricted in direction of vibration

From this reading THE POLARIZATION OF LIGHT.

polarizedverbUS /ˈpoʊləraɪzd/

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

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

portionnounUS /ˈpɔːrʃən/

something determined in relation to something that includes it

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

previousadjectiveUS /ˈpriːviəs/

just preceding something else in time or order

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

purelyadverbUS /ˈpjʊrli/

restricted to something

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

rationalenounUS /ˌræʃəˈnæl/

(law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature)

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

regardedverbUS /rɪˈɡɑːrdɪd/

past form of “regard” — deem to be

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

remarkableadjectiveUS /rɪˈmɑːrkəbəl/

unusual or striking

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

requiresverbUS /riˈkwaɪərz/

third-person singular of “require” — require as useful, just, or proper

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

sameadjectiveUS /seɪm/

Identical; not different.

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

someadjectiveUS /sʌm/

(quantifier) used with either mass nouns or plural count nouns to indicate an unspecified number or quantity

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

subjectnounUS /səbˈdʒekt/

the subject matter of a conversation or discussion

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

thatconjunctionUS /ðæt/

used to introduce what somebody said, thought, or felt

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

THEdeterminerUS /ðə/

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

From this reading THE POLARIZATION OF LIGHT.

theorynounUS /ˈθɪri/

a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

ThisdeterminerUS /ðɪs/

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

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

thoughtsnounUS /θɔːts/

plural of “thought” — the content of cognition; the main thing you are thinking about

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

timenounUS /taɪm/

an instance or single occasion for some event

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

toparticleUS /tuː/

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

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

undulationnoun

an undulating curve

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

undulatoryadjective

resembling waves in form or outline or motion

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

unlessconjunctionUS /ənˈles/

except if; if not

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

uspronounUS /ʌs/

the speaker and others, as the object of a verb or preposition

From this reading The answer requires us again to carry our thoughts back to the consideration of the undulatory theory of light, already illustrated and partly explained at pages 262, 330.

wavesnounUS /weɪvz/

plural of “wave” — one of a series of ridges that moves across the surface of a liquid (especially across a large body of water)

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

WepronounUS /wiː/

the speaker together with one or more other people

From this reading We have first to ask, "What is polarized light?"

wereauxiliary verbUS /wɜːr/

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

From this reading After perusing this portion of the subject, it might be considered that waves of light were constituted of one motion only, and that an undulation might be either perpendicular or horizontal, according to circumstances.

WhatpronounUS /wʌt/

used to ask for information about something

From this reading We have first to ask, "What is polarized light?"

willmodal verbUS /wɪl/

used to talk about the future, or about willingness

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

youthfuladjectiveUS /ˈjuːθfəl/

suggestive of youth; vigorous and fresh

From this reading This branch of the phenomena of light includes some of the most remarkable and gorgeous chromatic effects; at the same time, regarded philosophically, it is certainly a most difficult subject to place in a purely elementary manner before the youthful minds of juvenile philosophers, and unless the previous chapter on the diffraction of light is carefully examined, the rationale of the illustrations of polarized light will hardly be appreciated.

Chapter 27 of The Boy's Playbook of Science by John Henry Pepper holds 150 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 27 of The Boy's Playbook of Science contain?

Chapter 27 holds 150 sentences of The Boy's Playbook of Science, unabridged, divided into 30 reading sections.

This page carries chapter 27 of The Boy's Playbook of Science by John Henry Pepper exactly as it stands in the source edition, without abridgement. It runs to 150 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 27 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 27 be read aloud to me?

Yes — every sentence and every individual word in chapter 27 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.