Добавил:
Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:

Английский для инженеров-физиков. Фотоника и оптоинформатика. English for Students of Physics (Photonics). Учебное пособие

.pdf
Скачиваний:
0
Добавлен:
06.09.2026
Размер:
1 Мб
Скачать
cosmos having the shape of a shuttlecock. Just as a shuttlecock has a diameter of zero at its bottommost point and gradually widens on the way up, the universe, according to the no-boundary proposal, smoothly expanded from a point of zero size. Hartle and Hawking derived a formula describing the whole shuttlecock – the so-called “wave function of the universe” that encompasses the entire past, present and future at once – making moot all contemplation of seeds of creation, a creator, or any transition from a time before.
Hartle and Hawking’s proposal radically reconceptualized time. Each moment in the universe becomes a cross-section of the shuttlecock; while we perceive the universe as expanding and evolving from one moment to the next, time really consists of correlations between the universe’s size in each cross-section and other properties – particularly its entropy, or disorder. Entropy increases from the cork to the feathers, aiming an emergent arrow of time. Near the shuttlecock’s rounded-off bottom, though, the correlations are less reliable; time ceases to exist and is replaced by pure space.
The no-boundary proposal has fascinated and inspired physicists for nearly four decades. “It’s a stunningly beautiful and provocative idea,” said Neil Turok, a cosmologist at the Perimeter Institute for Theoretical Physics in Waterloo, Canada, and a former collaborator of Hawking’s. The proposal represented a first guess at the quantum description of the cosmos – the wave function of the universe. Soon an entire field, quantum cosmology, sprang up as researchers devised alternative ideas about how the universe could have come from nothing, analyzed the theories’ various predictions and ways to test them, and interpreted their philosophical meaning. The no­boundary wave function, according to Hartle, “was in some ways the simplest possible proposal for that.”
For the past year, Neil Turok, Job Feldbrugge of the Perimeter Institute, and his colleagues Latham Boyle and Kieran Finn have been developing a new cosmological model that has much in common with the no-boundary proposal. But instead of one shuttlecock, it envisions two, arranged cork to cork in a sort of hourglass figure with time flowing in both directions. While the model is not yet developed enough to make predictions, its charm lies in the way its lobes realize CPT symmetry, a seemingly fundamental mirror in nature that simultaneously reflects matter and antimatter, left and right, and forward and backward in time. One disadvantage is that the universe’s mirror-image lobes meet at a singularity, a pinch in space-time that requires
31
the unknown quantum theory of gravity to understand. Boyle, Finn and
y
Turok take a stab at the singularity, but such an attempt is inherently speculative.
DEVELOPING ACADEMIC VOCABULARY
WORKING OUT THE MEANING OF UNKNOWN WORDS
TASK 3. THE FOLLOWING WORDS ARE ALL FROM THE TEXT ABOVE. FIND THEM IN THE TEXT:
interminable smoothl
radically disorder spring up
TASK 4. FOR EACH WORD, READ THE SENTENCE IT OCCURS IN AND ANSWER THE QUESTIONS:
g) Is the word positive, negative or neutral?
h) Is it a noun, adjective, adverb or verb?
i) Can you think of a word with a similar meaning (synonym) and one with an opposite meaning (antonym)?
READING COMPREHENTION
TASK 5. ANSWER THE QUESTIONS:
1. What was Hawking’s idea about boundary conditions of the
universe?
2. When and where was the “no-boundary proposal” formulated?
3. What is it about?
4. What does “wave function of the universe” mean?
5. What does time really consist of (according to Hartle and Hawking)?
6. Why can the theory called revolutionary?
7. How has it inspired other physicists?
8. Who are Neil Turok, Latham Boyle and Kieran Finn? How have they
modified Hawking’s theory?
TASK 6. COMPLETE THE SENTENCES:
1. Hawking proposed that…
2. According to Hawking and Hartle, the cosmos…
3. The universe smoothly expanded … just as a …
4. A formula describing the whole shuttlecock …
5. In Hartle and Hawking’s proposal, each…
6. The correlations near the shuttlecock’s rounded-off bottom…
32
7. Physicists were fascinated and inspired…
8. Quantum cosmology sprang up as…
9. Recently, a new cosmological model…
10. This model supposes…
TASK 7. MATCH THE WORDS TO THEIR DEFINITIONS:
1) condition a) to think of something in a particular way
2) frequent b) to take the place of something
3) widen c) not mixed with anything else
4) perceive d) to become, or to make something greater in width
5) correlation e) to stop something
6) cease f) deserving trust; dependable
7) replace g) happening often
8) pure
h) to make someone feel that they want to do something and can do it
9) inspire
i) a connection or relationship between two or more facts, numbers, etc.
10) reliable j) the particular state that something or someone is in
TASK 8. TRANSLATE THE DEFINITIONS FROM EXERCISE 7 INTO RUSSIAN.
TASK 9. GIVE THE ENGLISH EQUIVALENTS OF THE FOLLOWING WORDS AND WORD COMBINATIONS
1. Положить конец бесконечному блужданию
2. Плавно расширилась от нулевой точки
3. Волновая функция Вселенной
4. Формула, описывающая волан целиком
5. Охватывать прошлое целиком
6. Ставить под вопрос
7. Поперечное сечение волана
8. Корреляции между размером Вселенной и другими свойствами
9. Поразительно красивая и провокационная идея
10. Недостаточно разработана, чтобы делать прогнозы
33
WORD BUILDING
TASK 10. COMPLETE THE WORD FAMILIES IN THE TABLE BELOW LIKE IN THE EXAMPLE. THANSLATE THEM INTO RUSSIAN
Verb Noun Adjective Adverb
inspire
… … … singularity … … charm … … fascinate … … – … … simultaneously evolve … … … … provocative
SPEAKING
TASK 11. SPEAK ABOUT INFINITY OF THE UNIVERSE. USE
THE QUESTIONS IN TASK 5 AS A PLAN.
TASK 12. DISCUSS THE FOLLOWING QUESTIONS WITH YOUR
PARTNER.
1. Do you accept Hawking’s “no-boundary proposal”?
2. Why was it criticized by some physicists?
3. What is the difference between Hawking’s and Turok’s theory?
WRITING
TASK 13. WRITE THE SUMMARY OF THE TEXT “DID THE
UNIVERSE HAVE NO BEGINNING?”
TRANSLATION
TASK 14. READ AND TRANSLATE THE TEXT FROM ENGLISH
INTO RUSSIAN. MAKE THE GLOSSARY TO IT.
Garden of Cosmic Delights
Hartle and Hawking saw a lot of each other from the 1970s on, typically when they met in Cambridge for long periods of collaboration. The duo’s theoretical investigations of black holes and the mysterious singularities at their centers had turned them on to the question of our cosmic origin.
34
In 1915, Albert Einstein discovered that concentrations of matter or energy warp the fabric of space-time, causing gravity. In the 1960s, Hawking and the Oxford University physicist Roger Penrose proved that when space-time bends steeply enough, such as inside a black hole or perhaps during the Big Bang, it inevitably collapses, curving infinitely steeply toward a singularity, where Einstein’s equations break down and a new, quantum theory of gravity is needed. The Penrose-Hawking “singularity theorems” meant there was no way for space-time to begin smoothly, undramatically at a point.
Hawking and Hartle were thus led to ponder the possibility that the universe began as pure space, rather than dynamical space-time. And this led them to the shuttlecock geometry. They defined the no-boundary wave function describing such a universe using an approach invented by Hawking’s hero, the physicist Richard Feynman. In the 1940s, Feynman devised a scheme for calculating the most likely outcomes of quantum mechanical events. To predict, say, the likeliest outcomes of a particle collision, Feynman found that you could sum up all possible paths that the colliding particles could take, weighting straightforward paths more than convoluted ones in the sum. Calculating this “path integral” gives you the wave function: a probability distribution indicating the different possible states of the particles after the collision.
Likewise, Hartle and Hawking expressed the wave function of the universe – which describes its likely states – as the sum of all possible ways that it might have smoothly expanded from a point. The hope was that the sum of all possible “expansion histories,” smooth-bottomed universes of all different shapes and sizes, would yield a wave function that gives a high probability to a huge, smooth, flat universe like ours. If the weighted sum of all possible expansion histories yields some other kind of universe as the likeliest outcome, the no-boundary proposal fails.
The problem is that the path integral over all possible expansion histories is far too complicated to calculate exactly. Countless different shapes and sizes of universes are possible, and each can be a messy affair. Even the minisuperspace calculation is hard to solve exactly, but physicists know there are two possible expansion histories that potentially dominate the calculation. These rival universe shapes anchor the two sides of the current debate.
Stephen Hawking probably had the best intuition of anyone on these topics. But he wasn’t always right.
35
GRAMMAR FOCUS
VERB PATTERNS. THE GERUND.
Active Passive
Non-perfect writing being written
Perfect having written having been written
The Gerund is a non-finite form of the verb.
Герундий
The Gerund
The Gerund is a non-finite form of the verb. The other non-finite verb forms are the Infinitive and the Participle.
Герундий – это неличная форма глагола. Другие неличные формы глагола – инфинитив и причастие.
Forms of Gerund
Gerunds are formed from verbs by adding ING: be – being; go – going; play – playing; talk – talking; write – writing. Gerunds can be formed from most verbs (except modal verbs).
The simple active form and the passive form usually express an action that is simultaneous with the action expressed by the main verb. The perfect form and the perfect passive form express an action that precedes the action expressed by the main verb.
The simple form of the Gerund is the most common. The compound
Формы герундия
Герундий образуется от глаголов прибавлением ING: be – being; go –
going; play – playing; talk – talking; write – writing. Герундий можно образовать от большинства глаголов (кроме модальных глаголов).
Простая активная форма и пассивная
форма обычно выражают действие, одновременное с действием, выра­женным основным глаголом. Пер­фектная форма и перфектная пассив­ная форма выражают действие, предшествующее действию, выра­женному основным глаголом.
Простая форма герундия наиболее употребительна. Сложные формы
36
forms of the Gerund are used
f
more rarely, mostly in writing.
Forms of Gerund
герундия употребляются реже, в ос­новном в письменной речи.
Формы герундия
Asking questions is his hobby. (asking – simple form)
I completely forgot having asked him to wait for me there. (having asked – perfect form)
She doesn't like being asked such questions. (being asked – passive form)
He could not remember ever having been asked to do such a thing. (having been asked – Perfect Passive Form)
Perfect forms
The simple active form of the Gerund is often used instead o
Простая активная форма герундия
the perfect form in those cases where it is not necessary to stress that the action expressed by the Gerund precedes the action expressed by the main verb (provided that the context is clear). For example:
Задавать вопросыего хобби. (asking – простая форма)
Я совсем забыл, что попросил его подождать меня там. (having asked – перфектная форма)
Она не любит, когда ей задают такие вопросы. (being asked – пассивная форма)
Он не помнил, чтобы его когда-либо просили сделать такое. (having been asked – перфектная пассивная форма)
Перфектные формы
часто употребляется вместо пер­фектной формы в тех случаях, где не нужно подчёркивать, что дейст­вие, выраженное герундием, пред­шествует действию, выраженному основным глаголом (при условии, что контекст ясен). Например:
I remember asking her about it. I don't remember being asked about it.
Passive forms
After the verbs "need, require, want" in the meaning "need cleaning, repairing, improving"
Я помню, что я спрашивал её об
этом. Я не помню, чтобы меня спрашивали об этом.
Пассивные формы
После глаголов "need, require, want"
в значении «нуждаться в чистке, ремонте, улучшении» и после
37
and after the adjective "worth",
b
f
f
b
the active form of the Gerund is used, not the passive form.
прилагательного "worth" (стоящий чего-то), употребляется активная форма герундия, а не пассивная.
This lock needs repairing.
Negative forms
Depending on the meaning, the negative particle "not" is placed
etween the auxiliary verb and the main verb (to negate the action o the main verb) or before the Gerund (to negate the action o the Gerund).
"Not" between the auxiliary verb and the main verb: He did not apologize for losing my book.
"Not" before the Gerund: He was fined for not paying his debt.
Note: Gerunds and Present Participles
The Gerund and the Present Participle have the same forms
ut are used differently. The Gerund functions as a noun. For example: Growing crystals is a difficult task.
Этот замок нужно починить.
Отрицательные формы
В зависимости от значения, от-
рицательная частица "not" ставится между вспомогательным и основ­ным глаголом (для отрицания дей­ствия основного глагола) или перед герундием (для отрицания действия герундия).
"Not" между вспомогательным и
основным глаголом: Он не изви­нился за то, что потерял мою книгу.
"Not" перед герундием: Он был
оштрафован за неуплату долга.
Примечание: Герундий и при­частие настоящего времени
Герундий и причастие настоящего
времени имеют одинаковые формы, но употребляются по-разному. Ге­рундий функционирует как сущест­вительное. Например: Выращивание кристаллов – трудная задача.
The present participle is used in the formation of the continuous tenses and is also used as an adjective. For example: She is reading books. Reading books needs a lot of time.
Причастие настоящего времени
используется в образовании про­долженных времён, а также упот­ребляется как прилагательное. Например: Она читает книги. На чтение книг нужно много времени.
38
Properties and functions of Gerunds
The Gerund names an action or state and functions as a noun.
Свойства и функции герундия
Герундий называет действие или состояние и функционирует как существительное.
The Gerund has some properties of the verb. Like verbs, Gerunds have active, passive, and perfect forms (sending, being sent, having sent, having been sent), can take a direct object (He likes watching films), and can be modified by an adverb (He is used to working late).
The Gerund has some properties of the noun and can function as the subject (Swimming is good for health), as a predicative noun (His hobby is travelling), as an object (He enjoys reading), as an attribute (The risk of losing money scares him), and as an adverbial modifier (He called her before leaving).
Gerunds and Nouns
Like Nouns, Gerunds often stand after prepositions: They left after signing the agreement.
Герундий имеет некоторые свойства глагола. Как и глаголы, герундий имеет активные, пассивные и пер­фектные формы (sending, being sent, having sent, having been sent), может принимать прямое дополнение (Он любит смотреть фильмы) и может определяться наречием (Он привык работать допоздна).
Герундий имеет некоторые свойства существительного и может функ­ционировать как подлежащее (Пла­вание полезно для здоровья), как предикативное существительное (Его хобби – путешествия), как допол­нение (Ему нравится чтение), как определение (Риск потерять деньги пугает его), как обстоятельство (Он позвонил ей перед уходом).
Герундий и существительные
Как и существительные, герундий часто стоит после предлогов: Они уш­ли после того, как подписали договор.
Like nouns, Gerunds can stand after possessive forms of nouns and pronouns: Mike's coming home so late worries us.
Как и существительные, герундий может стоять после притяжательных форм существительных и местоиме­ний: Приход Майка домой так позд­но беспокоит нас.
39
If it is clear who performs the
f
action expressed by the Gerund, the possessive forms are not necessary.
Если ясно, кто выполняет действие, выраженное герундием, при­тяжательные формы не нужны.
In many cases, it is preferable to use a suitable noun instead of a Gerund. For example: "the time o his arrival; his departure; during the flight", not "the time of his arriving; his departing; during flying".
Substitutes
Examples of the use of Gerunds in different functions in sentences are given in this material. But it does not mean that only the Gerund is used in such situations. In many cases, you can use nouns, Infinitives, verbs, and simpler constructions instead of Gerunds. For example:
Your not wanting to go there surprises me. – I'm surprised that you don't want to go there.
In general, it is advisable for language learners to use Gerunds only in those cases which are frequently found in textbooks and in other educational materials.
Во многих случаях, предпочти­тельно употребить подходящее существительное вместо герундия. Например: "the time of his arrival; his
departure; during the flight", а не "the time of his arriving; his departing; during flying".
Заменители
Примеры употребления герундия в
различных функциях в предложе­ниях даны в данном материале. Но это не значит, что только герундий употребляется в таких ситуациях. Во многих случаях можно употре­бить существительное, инфинитив, глагол и более простые конструкции вместо герундия. Например:
Ваше нежелание идти туда удивляет
меня. – Я удивлён, что вы не хотите идти туда.
В целом, изучающим язык целе-
сообразно употреблять герундий только в тех случаях, которые часто встречаются в учебниках и в других учебных материалах.
Depending on the context and meaning, Gerunds are translated into Russian as nouns, verbs, Infinitives, or adverbial Particip­les.
В зависимости от контекста и зна-
чения, герундий переводится на ру­сский язык как существительное, глагол, инфинитив, или деепри­частие.
40