Answer the questions:

1. What does the word “television” mean?

2. What are the main steps involved in television?

3. What is the ordinary concept of a picture?

4. What can be done in order to overcome the fundamental difficulty of transmitting information?

5. How can the illusion of continuous motion be obtained?

6. What is scanning? When and how is this process used?

7. Where is a reproduction of the picture being transmitted formed?

Exercises

1. Translate the following words paying attention to the prefixes:

Subdivide, subdivision, subcommittee, subgroup, supernatural, supersonic, subsection, subtropical, subarctic, subsonic, superhuman, superheat, ultra-violet, ultramodern, ultra-short.

2. Translate the sentences paying attention to the adverbs:

1. It has been repeatedly pointed out that wave motion is associated with vibration of particles.

2. Solid-propellant rockets have been gradually increasing their specific impulse.

3. The navigation system will continuously determine position of the satellite around the Earth.

4. When gases are highly compressed they are characterized by extreme lightness.

5. A gas is composed of individual particles, which are constantly colliding with each other.

6. Engineering mechanics is essentially a study of the effects of forces acting on bodies.

3. Translate the sentences paying attention to the adverbs: e xtremely difficult problem яка? проблема

наскільки важка

надзвичайно важка

1. Because there is no working fluid or energy source carried on the vehicle, the photon rocket is highly economical in weight.

2. To utilize solar radiation very large surface areas are needed and they will be prohibitively heavy.

3. Space travel is going to play an increasingly important part in our lives.

4. The general activity of navigation in space without external assistance is still largely theoretical.

5. At extremely high altitudes the different gases composing the atmosphere separate according to their densities.

6. The air in the “standard” atmosphere was assumed to be perfectly dry.

4. Translate the sentences paying attention to the participles:

1. Operation of an ion rocket involves three principal processes: generation of ions, their acceleration by electrostatic field, and electrical neutralization of the resulting ion beam.

2. A much less important though related problem is the study of interplanetary dust.

3. The shape of the curve is similar to the curves of many associated phenomena.

4. This figure illustrated diagrammatically the nature of the ground-based observations of the solar and related terrestrial disturbance phenomena.

5. Translate the sentences paying attention to verb “involve” and the participle “involved”:

1. Space flight involves many different problems varying greatly with different missions.

2. Nuclear radiation involves the release of a considerable amount of energy.

3. Teaching pilots to fly involves a great deal of training.

4. Energy is involved in every motion, in every event.

5. Liquid oxygen has been used in the industry for many years, and no great problems are involved.

6. The technical problems involved in the construction of an ion rocket are considered in some detail below.

7. Some of the forces involved in flight are lift, drag, thrust and gravity.

8. It is the purpose of this chapter to discuss the general principles involved in the operation of electronic devices.

9. We have to consider all the factors involved in the construction of rocket engines.

10. The mathematical difficulties involved in an exact solution of the motion of two or more electrons revolving round a nucleus are very great indeed.

11. Rocket propulsion differs from other propulsion methods only in the relative masses and velocities involved.

12. The process involved aims at production of heavy water.

13. The reduction of radiation intensities to a safe level for the personnel involved is not particularly difficult.

14. When selecting the propellants to be used for any particular rocket there are obviously a great many considerations involved.