Translate and memorize the following words. Unit I Semiconductors

Unit I Semiconductors

Section IV Materials

Speak about any discovery in chemistry using the phrases underlined in the texts you have already read.

Grammar: The Emphatic Construction

The use of for

Text: Some Semiconducting Materials

selenide	amorphous	chalcogenous
telluride	conventional	accidental
analogue	supercool	yield
range	vitreous	set
transparency	peculiar	confirm

2. Read the following word combinations fluently and translate them:

semiconducting materials, a wide range of glasses, chemical analogues, a set of required conditions, compared with the oxide, a far lower softening point, their radiation resistance.

3. Translate the following sentences according to the given models:

Model I: It was M. V. Lomonosov who founded the first University in Russia.

(Именно) М. В. Ломоносов основал первый университет в России.

It was his observation that gave rise to the following investigations

Именно его наблюдения дали толчок к последующим исследованиям.

1. It was D. I. Mendeleyev who first classified the elements according to their atomic weights. 2. It is this article that shows the progress of our industry. 3. It is the development of chemical processes that his report deals with. 4. It was not until 1911 that the first theory of atomic structure was suggested. 5. It was in the Soviet Union that the first atomic power station was built. 6. It was the Dutch physicist Christian Huygens who offered an explanation for this new phenomenon.

Model II: I do know this man very well.

Я действительно знаю этого человека очень хорошо.

1. Though these molecules are very small the examination under a very powerful electronic microscope may show that they do exist. 2. He did carry out this experiment without any outside help. 3. Water does dissolve some substances readily. 4. This metal does conduct electricity well. 5. Though this subject was very difficult for him he did master it well. 6. All of the weight relations in chemical reactions do depend upon the weights of the atoms of the elements. 7. The process of extraction does involve four steps. 8. These electrode reactions, like other chemical reactions, do occur in steps.

4. Find the English equivalents of the following Russian sentences:

I. Именно этот полупроводник был использован в этом приборе нашими научными сотрудниками.

a) This semiconductor was used in this device by our research-workers.

b) It is this semiconductor that was used in this device by our research-workers.

c) Our research-workers used this semiconductor in this device.

II. Именно этот ученый обнаружил необычные свойства этого типа стекла.

a) This scientist revealed the peculiar properties of this type of glass.

b) The peculiar properties of this type of glass were revealed by this scientist.

c) It was this scientist who revealed the peculiar properties of this type of glass.

5. Translate the sentences into Russian, mind the use of "for":

1. This new machine has been working for twelve hours without stopping. 2. This semiconductor was used for the first time at our plant. 3. The use of charcoal and other adsorbents for the removal of impurities from a substance in solution for a long time has been common practice. 4. For this reason this material couldn't be used as a conductor. 5. There is one use for which the carbon lamp suits better than the tungsten lamp. 6. Photoelectric cells are known to be used for detecting flaws in certain products. 7. For centuries glass was used for jewelry, ornaments and mosaic.

6. Don’t confuse these words with each other. Memorize the following words and translate the sentences below:

thorough – тщательный, основательный

though – хотя

thought – мысль

through – через, сквозь

1. Though this experiment was very difficult they did complete it in time. 2. The scientists made thorough investigations on vitreous semiconductors. 3. The scientists thought the properties of new glass to be generally similar to conventional ones. 4. This gas is found in trace amounts throughout the atmosphere. 5. This gas may be passed through a glass tube to the bottom of a vessel. 6. After the thorough revision of the periodic table he could predict the properties of missing elements. 7. Though they do not react to acids they are soluble in alkalies. 8. He thought his thoughts were not new though still rather fantastic ones.

Notes on the Text:

1.it was the logical outcome– это было логическим следствием (результатом)

2.far lower– гораздо ниже

3.theycan be classed with– их можно поставить в один ряд

4. on the contrary – напротив

7. Read the text and arrange the items of the plan in a logical order:

1. The results of this investigation.

2. The application of vitreous semiconductors.

3. The formation of glasses.

4. Investigation of semiconducting materials.

5. The difference between oxide and chalcogenous glasses.

6. Chalcogenous glasses, their properties.

7. Vitreous semiconductors.

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