2.1 Follow the model while translating the sentences.

1. Some more heating is to produce the effect required.

2. New sources of cheap energy are to be found.

3. We are to take advantage of the high penetrating power of these rays.

4. In our experiment we are to compare the relative weights of two substances.

5. Glass which is to be used for lenses must be almost colourless.

6. Intimate contact of the substances that are to react is always necessary.

7. Some problems of science could not have been solved without isotopes.

8. Life may have existed on that planet.

9. Which method is to be chosen in this case?

10. X-ray analysis is to be applied to the study of this material.

11. If a thin-film transistor is to be used in integrated circuits, its fabrication must be compatible with the fabrication of the passive elements to be used in circuits.

12. Franklin may not have been as original as some admirers have thought.

13. The energies of the world were not localized in the particles from which these forces arose they were rather to be found in the space surrounding them.

14. The experimental results obtained at the end of the 19^th century and in the early years of the 20^th century revealed the properties of light that could not have been predicted from the knowledge that was obtainable about other waves.

15. The English physicist Thomson thought Hertz’s vacuum might have been faulty and that residual gas might have reduced the effect of the electric field on the cathode rays.

3.1 Translate the sentences into Russian following the model.

1. One way of obtaining hydrogen is to pass electric current through water.

2. Our present concern will be to discuss the information obtained during the experiment.

3. The method in use is to split the simplest nucleus.

4. The difficulty will be to obtain the substance in question.

5. Our purpose has been to determine the effect of X-rays on the substance under test.

6. The next step will be to produce the diagram of the system.

7. The object of these experiments was to find the connection between secondary electrons and primary beta rays from a radioactive substance.

8. The function of neutrons in the nucleus is evidently to overcome the repulsive force that exists between protons.

9. The purpose of the paper was to explain the colours of solid bodies by showing how light could be analyzed into its components by reflection as well as refraction.

10. One of Faraday’s first experiments after his discovery of electromagnetic rotation was to pass a ray of polarized light through a solution in which electrochemical decomposition was taking place.

11. His contribution was to mathematize these ideas in the form of his classical field equations.

12. His main aim was to construct a single theory to explain the relationship of electricity, magnetism and light.

13. One of Marie Curie’s outstanding achievements was to understand the need to accumulate intense radioactive sources.

14. Bohr’s starting point was to realize that classical mechanics by itself could never explain the stability of the atom.

15. The purpose was to define the speed of electrons.