III. After-text Exercises

1. Give equivalents of the following words and expressions:

електромагнітне випромінювання; широко розповсюджений;

дистанційне керування; обробляти; той, що передається безпосередньо в ефір; монтувати, збирати; слідкуючий пристрій; відповідне співвідношення; відеошукач; світлочутлива інтегральна схема; пристрій із зарядовим зв'язком.

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

a) In a typical television station, the signals from live and recorded features, including commercials, are put separately in a master control room to provide the station's; continuous broadcast schedule.

b) The waves excite weak electric currents in all television-receiving antennas within range.

c) When recording television images, the pickup device doesn't replace the function of film used in making movies.

d) The beam of electrons is produced by an electron gun at the back of the camera tube.

e) A charge-coupled device (CCD) can be much bigger than a camera tube and much more durable.

3. Answer the following questions on paragraphs 9-12:

а) What was the first camera tube used in television?

b) What devices are called charge-coupled devices (CCDs)?

c) Where are the target materials photoemissive and photoconductive?

d) How is the beam of electrons produced and controlled?

e) What arc the main characteristics of a charge-coupled device (CCD)?

4. Translate paragraphs 7,8,13 in writing.

5. Write out of paragraphs 3-6 words and word combinations describing the creation and broadcasting a television program. Use them for rendering to your group-mates.

6. Define the forms and functions of Gerund:

1) Studying small structures is accomplished with the help of microscope.

2) Scientists began working at the problem of magnifying the power of microscopes more than 200 years ago.

3) They were greatly interested in improving the lenses.

4) Adding heat to a substance will not always cause a rise of its temperature.

5) The sound effect of increasing the magnet current is to increase the field strength at every point.

6) Representing the electric field by means of these lines help us to picture the forces between the changed bodies.

7) The experiments of physicists resulted in making much more powerful microscopes.

8) The main point of a transformer is changing voltage although the power of both sides of the transformer is equal.

9) After introducing new technology in that branch of industry some changes must be made as soon as possible.

10) The necessity in the form of increasing productivity gave birth to new automatic mechanism.

11) On reading J. Von Neumann's paper we understood the main idea of internal memory for storing the program.

12) By using transistor circuits scientists removed size limitation of the previous computers.

13) Measuring temperature is necessary in many experiments.

14) The laser beam is made exciting the atoms of a suitable material.

15) There can be no progress in science without experimenting.

16) Upon adding heat we can change the state of a substance.

17) Penetrating into space was very important for mankind.

18) For many centuries men were interested in obtaining new sources of energy.

19) When atoms or molecules are excited they emit electromagnetic waves. By counting the number of waves in certain period, a very accurate measure of time can be defined.

20) Telemetry is the science of seeing some place without being there.