# Английский язык. Ч.3 (Tests 10,11,12). Ильичева Н.А - 16 стр.

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• ## Иностранный язык

G. Translate the following text
The second postulate of the special theory of relativity states that light
propagates through empty space with a definite speed c independent of the speed
of the source or observer. It may seem hard to accept, for it violates
commonsense notions. First of all, we have to think of light traveling through
empty space. Giving up the ether is not too hard, however, for after all, it had
never been detected. But the second postulate also tells us that the speed of light
in vacuum is always the same, 3
.
10
8
m/s, no matter what the speed of the
observer or the source. Thus, a person traveling toward or away from a source of
light will measure the same speed for that light as someone at rest with respect
to the source. These conflicts with our everyday notions, for we would expect to
have to add in the velocity of the observer. Part of the problem is that in our
everyday experience, we do not measure velocities anywhere near as large as the
speed of light. Thus we can’t expect our everyday experience to be helpful when
dealing with such a high velocity. On the other hand, the Michelson-Morley
experiment is fully consistent with the second postulate.
Test 12 (Units 6–12. Revision)
Choose the most suitable heading from the list A–G for each part (1–6) of
the text.
The 21st Century Engineer
A. Integration of disparate components into the whole that exceeds the sum of
its respective capabilities.
B. Creating microscopic devices.
C. Advances in modern science and technology that will shape the future of
engineering.
16
G. Translate the following text
The second postulate of the special theory of relativity states that light
propagates through empty space with a definite speed c independent of the speed
of the source or observer. It may seem hard to accept, for it violates
commonsense notions. First of all, we have to think of light traveling through
empty space. Giving up the ether is not too hard, however, for after all, it had
never been detected. But the second postulate also tells us that the speed of light
in vacuum is always the same, 3 . 108 m/s, no matter what the speed of the
observer or the source. Thus, a person traveling toward or away from a source of
light will measure the same speed for that light as someone at rest with respect
to the source. These conflicts with our everyday notions, for we would expect to
have to add in the velocity of the observer. Part of the problem is that in our
everyday experience, we do not measure velocities anywhere near as large as the
speed of light. Thus we can’t expect our everyday experience to be helpful when
dealing with such a high velocity. On the other hand, the Michelson-Morley
experiment is fully consistent with the second postulate.

Test 12 (Units 6–12. Revision)

Choose the most suitable heading from the list A–G for each part (1–6) of
the text.

The 21st Century Engineer
A. Integration of disparate components into the whole that exceeds the sum of
its respective capabilities.
B. Creating microscopic devices.
C. Advances in modern science and technology that will shape the future of
engineering.
16