Lesson three. 1. A bit like – немного напоминающий

Notes

1. a bit like – немного напоминающий

2. is operated on the same principle – работает на том же принципе

3.1.000 times more sensitive – в 1000 раз более чувствительный

II. Say whether the following statements are true or false:

1. The light made by a laser is much more intense than ordinary light. 2. With ordinary light, all the light waves have the same length. 3. With lasers all the light waves have different length. 4. A laser concentrates light waves into a very intense beam.

III. Answer the following questions on paragraph 2:

1. What are atoms made up of? 2. To what level are the electrons excited in a laser? 3. When do they give off energy? 4. In what form is this energy given off?

IV. Find the place in paragraph 3 containing the information of the uses of lasers. Render this information to your group-mate.

V. In paragraph 4 find the English equivalents of the following words:

голография, голограмма, объемное изображение, выглядеть, испытывать, проверять, выяснять.

VI. Translate paragraph 5.

VII. Read paragraph 6 and say where masers are used.

VIII. Write out of the text the words and phrases describing a laser.

IX. Describe the uses of lasers.

X. Divide text A into logical parts and find the topical sentences of each part. Put them down.

XI. Speak about lasers using the topical sentences and the logical diagram given below.

I. Look through the list of English words and their Russian equivalents facilitating reading text B:

micro welding – микросварка; resistor trimming – подгонка резисторов; isolation – выделение; отделение; power engineering – энергетика; extrapure – сверхчистый; resolution – разрешающая способность; to store – запоминать, хранить; to process – обрабатывать; archive – архив; to display – отображать (данные); выводить (данные); screen – экран; information carrier – носитель информации; to come in handy – пригодиться, прийтись кстати; indispensable – обязательный, необходимый; to put into effect – осуществлять.

II. Read the following text and entitle it. Compare your title with the one given by the author. (See the key on page 106).

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