1. The number of distinct particle types in nature.
2. Photonsand neutrinos cannot cluster.
3. Most matter of the universe is made up of quarks and electrons.
4. Electron is indivisible.
5. Quarks cannot be found in isolation.
6. Neutrons are unstable.
7. Protons are unstable.
8. Neutrons can bind with one another.
9. Quarks can bind with one another.
• Think and say a few words about:
a) distinct particle types known in nature;
b) the nature of quarks;
c) QCD and QED theories;
d) protons and neutrons, their present and future.
HOMEWORK
(to be done in writing)
1. Translate into Russian.
The Properties of Space
How is it possible for space to change, if space is conceived of as nothing at all? Actually, physicists no longer think of space in that way. Einstein, in his general theory of relativity, following up on the work ofthe nineteenth-century mathematicians Bernhard Riemann and William Clifford, asserted that the properties of any region of space depend considerably on the presence and form of matter nearby. For example, the space near the sun is distorted in its geometrical properties; it "curves" because ofthe star's great mass. A triangle drawn by intersecting light rays near the sun would not obey the rules of Euclidean geometry, its angles would not add up to 180 degrees. It is this distortion of space and a related change in the way time passes that earlier physicists identified as the force of gravity, and which in Einstein's theory leads to the motion of the planets in orbits around the sun.
2. Translate into English. Use the Gerund forms.
1. Стоит обсудить проблему субатомных частиц подробно.
2. Мы не можем не попытаться дать определение этим понятиям.
3. Не стоит повторять эти измерения без высокочувствительною прибора.
4. Нельзя не признать ценность этих исследований.
5. Не имеет смысла (не стоит) перечислять все достоинства этой работы.
6. Стоит учесть все недостатки этой работы.
Part IV.
MODERN DISCOVERIES, THEORIES AND TECHNOLOGIES
UNIT FOURTEEN
GRAMMAR: МЕСТОИМЕНИЕ ONE
Модальные глаголы must, have, should, ought, may, can, might теряют ciioи оттенки значений и переводятся практически одинаково. Местоимение one не переводится.
| One must i | One can | можно | |
| One has to | следует, нужно, | One may | |
| One should | необходимо | One might | можно было бы |
| One ought | One could |
• Complete the sentences.
1. One must remember that...
2. One has to assume that...
3. One should emphasize that...
4. One ought to bear in mind that...
5. One can see that...
6. One may note that...
7. One might expect that...
8. If it were so, one could conclude that...
• Translate the following sentences. Pay special attention to: • one as the subject of a sentence.
Model 1: One could expect the value to change.
Можно было бы ожидать, что эта величина изменится.